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

:root {
  --text: #2c2420;
  --text-light: #6b5f58;
  --accent: #e08a5e;
  --accent-dark: #c97448;
  --bg: #faf8f5;
  --surface: #ffffff;
  --border: #ede6df;
  --blue: #4a7c8c;
  --green: #4a7c59;
  --font-body: 'Noto Sans JP', sans-serif;
  --font-heading: 'Noto Serif JP', serif;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 2;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-dark); }
.container { max-width: 760px; margin: 0 auto; padding: 0 24px; }

/* Sample Banner */
.sample-banner {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  background: var(--accent); color: #fff;
  text-align: center; font-size: 0.75rem; padding: 6px;
}

/* Article Header */
.article-header {
  padding: 120px 0 60px;
  background: linear-gradient(135deg, #fff5ed, #ffecd2, #fff8f0);
}
.article-meta {
  display: flex; gap: 16px; align-items: center;
  margin-bottom: 20px;
}
.article-category {
  font-size: 0.75rem; font-weight: 500;
  padding: 4px 14px; background: var(--accent);
  color: #fff; border-radius: 20px;
}
.article-meta time {
  font-size: 0.8rem; color: var(--text-light);
}
.article-header h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 700; line-height: 1.5;
  margin-bottom: 20px;
}
.article-header .subtitle {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--text-light); font-weight: 400;
}
.article-info {
  display: flex; gap: 20px;
  font-size: 0.8rem; color: var(--text-light);
}

/* Article Body */
.article-body { padding: 48px 0 80px; }
.article-body h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem; font-weight: 700;
  margin: 56px 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent);
}
.article-body h3 {
  font-size: 1.1rem; font-weight: 700;
  margin: 32px 0 12px;
  padding-left: 14px;
  border-left: 3px solid var(--accent);
}
.article-body p {
  margin-bottom: 16px; font-size: 0.95rem;
}
.article-body ul, .article-body ol {
  margin: 16px 0; padding-left: 24px;
}
.article-body li { margin-bottom: 8px; font-size: 0.95rem; }

/* Lead */
.lead { margin-bottom: 40px; }
.lead p:first-child {
  font-family: var(--font-heading);
  font-size: 1.2rem; font-weight: 700;
  color: var(--accent-dark);
}

/* TOC */
.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 32px;
  margin: 32px 0 48px;
}
.toc-title {
  font-weight: 700; font-size: 0.9rem;
  margin-bottom: 12px !important;
}
.toc ol { counter-reset: toc; padding-left: 0; list-style: none; }
.toc li {
  counter-increment: toc;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.toc li:last-child { border-bottom: none; }
.toc a {
  text-decoration: none; font-size: 0.9rem;
  color: var(--text); transition: color 0.3s;
}
.toc a:hover { color: var(--accent); }

/* Case Summary */
.case-summary {
  background: var(--surface);
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  padding: 24px 28px;
  margin: 24px 0;
}
.case-summary dl { display: grid; gap: 8px; }
.case-summary dl > div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 8px;
  font-size: 0.9rem;
}
.case-summary dt { font-weight: 700; color: var(--accent-dark); }
.case-summary dd { color: var(--text-light); }

/* Point Box */
.point-box {
  background: #fef8f0;
  border: 1px solid #f0e0cc;
  border-radius: 12px;
  padding: 24px 28px;
  margin: 24px 0;
}
.point-box p { font-size: 0.9rem; }
.point-box ul { margin: 8px 0 0; }

/* Quote Box */
.quote-box {
  background: var(--surface);
  border-left: 4px solid var(--green);
  border-radius: 0 12px 12px 0;
  padding: 24px 28px;
  margin: 24px 0;
  font-style: italic;
}
.quote-box p { color: var(--text-light); font-size: 0.92rem; }
.quote-author {
  display: block; margin-top: 12px;
  font-size: 0.8rem; color: var(--text-light);
  font-style: normal;
}

/* Compare Box */
.compare-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 24px 0;
}
.compare-before, .compare-after {
  padding: 20px 24px;
  border-radius: 12px;
  font-size: 0.88rem;
}
.compare-before {
  background: #f5f0eb; color: var(--text-light);
}
.compare-after {
  background: #eef5e9; color: var(--text);
}
.compare-label {
  font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-bottom: 8px !important;
}
.compare-before .compare-label { color: #999; }
.compare-after .compare-label { color: var(--green); }

/* Metrics Row */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin: 24px 0;
}
.metric {
  background: var(--surface);
  padding: 16px 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.metric-label {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.metric-before {
  font-size: 0.85rem;
  color: var(--text-light);
  text-decoration: line-through;
}
.metric-arrow {
  font-size: 0.75rem;
  color: var(--text-light);
}
.metric-after {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-dark);
}

/* Results Overview */
.results-overview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  margin: 40px 0;
}
.results-title {
  font-weight: 700; font-size: 0.95rem;
  text-align: center; margin-bottom: 24px !important;
}
.results-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.result-item {
  text-align: center;
  padding: 20px 8px 16px;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.result-badge {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: #fef3eb;
  padding: 2px 10px;
  border-radius: 2px;
}
.result-number {
  display: block;
  font-size: 2rem; font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  margin: 4px 0;
  font-variant-numeric: tabular-nums;
}
.result-number small {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-light);
}
.result-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
}
.result-industry {
  display: block;
  font-size: 0.65rem;
  color: var(--text-light);
  margin-top: 2px;
}

/* Bar Chart */
.bar-chart {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  margin: 24px 0;
}
.chart-title {
  font-weight: 700; font-size: 0.9rem;
  margin-bottom: 20px !important;
}
.bar-row {
  margin-bottom: 14px;
}
.bar-label {
  display: block;
  font-size: 0.8rem; color: var(--text-light);
  margin-bottom: 6px;
}
.bar-track {
  background: #f0ebe5;
  border-radius: 8px;
  height: 32px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 12px;
  min-width: 48px;
  transition: width 1s ease;
}
.bar-fill span {
  font-size: 0.75rem; font-weight: 700; color: #fff;
}
.bar-fill.highlight {
  background: linear-gradient(90deg, #c97448, #a85a32);
}
.chart-source {
  font-size: 0.7rem; color: var(--text-light);
  opacity: 0.6; margin-top: 12px !important; margin-bottom: 0 !important;
}

/* Flow Chart */
.flow-chart {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 16px;
  margin: 24px 0;
  flex-wrap: wrap;
}
.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 12px;
  border-radius: 4px;
  background: #f5f3f0;
  border: 1px solid var(--border);
  min-width: 90px;
}
.flow-step.ai {
  background: var(--surface);
  border: 2px solid var(--accent);
}
.flow-icon {
  width: 32px; height: 32px;
  color: var(--accent-dark);
}
.flow-icon svg { width: 100%; height: 100%; }
.flow-step span {
  font-size: 0.75rem; font-weight: 500;
  text-align: center;
}
.flow-arrow {
  font-size: 1.2rem; color: var(--text-light);
  font-weight: 300;
}

/* Step List */
.step-list li { margin-bottom: 12px; }

/* Step Card */
.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 32px;
  margin: 20px 0;
}
.step-number {
  font-size: 0.75rem; font-weight: 700;
  color: var(--accent); letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.step-card h3 {
  border: none; padding: 0; margin: 0 0 12px;
  font-size: 1.05rem;
}
.step-card p { margin-bottom: 0; }

/* Article CTA */
.article-cta {
  text-align: center;
  background: linear-gradient(135deg, #fff5ed, #ffecd2);
  border-radius: 16px;
  padding: 48px 32px;
  margin-top: 56px;
}
.article-cta p {
  font-size: 1rem; font-weight: 500;
  margin-bottom: 20px;
}
.cta-btn {
  display: inline-block;
  padding: 14px 40px;
  background: var(--accent);
  color: #fff; text-decoration: none;
  border-radius: 8px; font-weight: 500;
  transition: all 0.3s;
  box-shadow: 0 4px 16px rgba(224,138,94,0.3);
}
.cta-btn:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(224,138,94,0.4);
  color: #fff;
}

/* Footer */
.footer {
  text-align: center; padding: 32px 24px;
  font-size: 0.8rem; color: var(--text-light);
  border-top: 1px solid var(--border);
}
.footer-note { margin-top: 8px; font-size: 0.75rem; opacity: 0.6; }

/* Mobile */
@media (max-width: 768px) {
  .article-header { padding: 100px 0 40px; }
  .article-header h1 { font-size: 1.4rem; }
  .compare-box { grid-template-columns: 1fr; }
  .case-summary dl > div { grid-template-columns: 80px 1fr; }
  .results-grid { grid-template-columns: repeat(3, 1fr); }
  .metrics-row { grid-template-columns: 1fr; }
  .flow-chart { gap: 6px; }
  .flow-step { min-width: 70px; padding: 12px 8px; }
  .flow-step span { font-size: 0.68rem; }
}