:root {
  --bg: #FAF8F4;
  --bg-soft: #F2EEE7;
  --bg-card: #FFFFFF;
  --ink: #1A1915;
  --ink-2: #3D3B34;
  --ink-3: #6B6860;
  --ink-4: #9A968C;
  --line: rgba(26, 25, 21, 0.10);
  --line-soft: rgba(26, 25, 21, 0.06);
  --accent: #2C4A6E;
  --accent-soft: #E8EEF5;
  --accent-ink: #1B3553;

  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", system-ui, sans-serif;
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-mono: "Inter", ui-sans-serif, system-ui;

  --maxw: 1140px;
  --maxw-narrow: 780px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 400;
  font-feature-settings: "palt" 1;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* ─── Nav ─── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 18px;
}
.brand-mark {
  width: 26px; height: 26px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--ink);
  color: var(--bg);
  border-radius: 7px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: -0.02em;
}
.nav-links {
  display: flex; gap: 36px;
  font-size: 14px;
  color: var(--ink-2);
}
.nav-links a { transition: color .15s; }
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  font-size: 14px;
  padding: 9px 18px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  border: 0;
  transition: transform .15s, background .15s;
  display: inline-block;
  text-decoration: none;
}
.nav-cta:hover { background: #000; transform: translateY(-1px); }
.nav-cta-group { display: flex; gap: 8px; align-items: center; }
.nav-cta-chat {
  font-size: 14px;
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: transform .15s, border-color .15s, background .15s;
  display: inline-block;
}
.nav-cta-chat:hover { border-color: var(--ink-3); background: var(--bg-soft); transform: translateY(-1px); }
@media (max-width: 720px) {
  .nav-cta-group .nav-cta-chat { display: none; }
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: transform .15s ease, background .15s, border-color .15s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: #000; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-arrow { transition: transform .2s; }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ─── Layout helpers ─── */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.wrap-n { max-width: var(--maxw-narrow); margin: 0 auto; padding: 0 32px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--ink-3);
}

/* ─── Hero ─── */
.hero {
  padding: 96px 0 120px;
  position: relative;
  overflow: hidden;
}
.hero-inner { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; position: relative; }
.hero-eyebrow { margin-bottom: 28px; }
.hero h1 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 32px;
  color: var(--ink);
  max-width: 16ch;
  text-wrap: pretty;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(transparent 62%, var(--accent-soft) 62%);
  padding: 0 0.1em;
}
.hero-lead {
  font-size: 17px;
  line-height: 1.95;
  color: var(--ink-2);
  max-width: 56ch;
  margin: 0 0 16px;
}
.hero-lead-strong {
  font-size: 17px;
  line-height: 1.95;
  color: var(--ink);
  max-width: 56ch;
  margin: 0 0 44px;
}
.hero-lead-strong b { font-weight: 600; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }

/* hero diagram */
.hero-diagram {
  margin-top: 88px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg-card);
  padding: 36px 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  position: relative;
  overflow: hidden;
}
.hero-diagram::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, transparent 0 79px, var(--line-soft) 79px 80px);
  pointer-events: none;
  opacity: 0;
}
.hd-col {
  padding: 4px 24px;
  border-right: 1px solid var(--line-soft);
  position: relative;
}
.hd-col:last-child { border-right: 0; }
.hd-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-4);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.hd-ttl {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 6px;
  color: var(--ink);
}
.hd-sub {
  font-size: 13px;
  color: var(--ink-3);
  line-height: 1.7;
}

/* ─── Section base ─── */
section.block { padding: 120px 0; border-top: 1px solid var(--line-soft); }
.block-head { margin-bottom: 64px; }
.block-head .eyebrow { margin-bottom: 20px; }
.block-head h2 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: -0.005em;
  line-height: 1.4;
  margin: 20px 0 0;
  max-width: 24ch;
  text-wrap: pretty;
}
.block-head h2 em {
  font-style: normal;
  color: var(--accent-ink);
}
.about-grid .block-head,
.faq-grid .block-head { margin-bottom: 0; }
.block-head-desc {
  margin-top: 24px;
  font-size: 15px;
  color: var(--ink-3);
  line-height: 1.9;
  max-width: 32ch;
}
.ink-link {
  color: var(--ink);
  text-decoration: underline;
}
.ink-link:hover { color: var(--accent-ink); }

/* ─── About FDE ─── */
.about {
  background: var(--bg-soft);
  border-top: 0;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}
.about-grid h2 { margin-bottom: 0; }
.about-body p {
  font-size: 16px;
  line-height: 2;
  color: var(--ink-2);
  margin: 0 0 24px;
}
.about-body p b { color: var(--ink); font-weight: 600; }
.about-body .quote {
  margin: 36px 0 0;
  padding: 24px 28px;
  background: var(--bg-card);
  border-left: 3px solid var(--accent);
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.95;
  color: var(--ink);
  letter-spacing: 0.005em;
}

/* compare table */
.compare {
  margin-top: 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-card);
}
.compare-col { padding: 28px 32px; }
.compare-col + .compare-col { border-left: 1px solid var(--line); }
.compare-col.us { background: var(--accent-soft); }
.compare-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.compare-col.us .compare-tag { color: var(--accent-ink); }
.compare-h {
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 14px;
  color: var(--ink);
}
.compare-list {
  margin: 0; padding: 0; list-style: none;
  display: flex; flex-direction: column; gap: 10px;
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.7;
}
.compare-list li { padding-left: 18px; position: relative; }
.compare-list li::before {
  content: "";
  position: absolute; left: 0; top: 12px;
  width: 8px; height: 1px; background: var(--ink-4);
}
.compare-col.us .compare-list li::before { background: var(--accent); height: 2px; top: 11px; }

/* ─── Process ─── */
.process-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.step {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 48px;
  padding: 48px 0;
  border-top: 1px solid var(--line);
  align-items: start;
  transition: background .25s;
}
.step:last-child { border-bottom: 1px solid var(--line); }
.step:hover { background: color-mix(in oklab, var(--bg-soft) 50%, transparent); }
.step-meta { display: flex; flex-direction: column; gap: 8px; padding-left: 4px; }
.step-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-4);
}
.step-num-big {
  font-family: var(--font-serif);
  font-size: 56px;
  line-height: 1;
  font-weight: 400;
  color: var(--accent-ink);
  letter-spacing: -0.02em;
}
.step-body h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 22px;
  margin: 0 0 14px;
  line-height: 1.5;
  color: var(--ink);
}
.step-body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 2;
  color: var(--ink-2);
  max-width: 60ch;
}
.step-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: 18px;
}
.step-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--ink-3);
  letter-spacing: 0.04em;
}

/* ─── FAQ ─── */
.faq { background: var(--bg-soft); }
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 80px;
  align-items: start;
}
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  padding: 28px 0 14px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--ink);
  letter-spacing: 0.005em;
}
.faq-q-text { flex: 1; }
.faq-q-num {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--accent-ink);
  letter-spacing: 0.04em;
  padding-top: 4px;
  min-width: 28px;
}
.faq-a-inner {
  padding: 0 0 32px 42px;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 2;
}
.faq-a-inner p { margin: 0 0 14px; }
.faq-a-inner p:last-child { margin-bottom: 0; }
@media (max-width: 880px) {
  .faq-a-inner { padding-left: 0; }
}

/* ─── CTA ─── */
.cta {
  padding: 140px 0;
  text-align: center;
  border-top: 1px solid var(--line-soft);
}
.cta .eyebrow { margin-bottom: 28px; justify-content: center; }
.cta h2 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(34px, 4.4vw, 52px);
  letter-spacing: -0.01em;
  line-height: 1.45;
  margin: 0 auto 24px;
  max-width: 18ch;
  text-wrap: pretty;
}
.cta-lead {
  font-size: 16.5px;
  color: var(--ink-2);
  line-height: 2;
  max-width: 48ch;
  margin: 0 auto 48px;
}
.cta-ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ─── Contact form ─── */
.contact-form {
  max-width: 560px;
  margin: 0 auto;
  text-align: left;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 40px 44px;
}
.contact-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}
.contact-form .form-field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.contact-form .form-row .form-field { margin-bottom: 0; }
.contact-form label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-2);
  letter-spacing: 0.01em;
}
.contact-form label .req {
  color: var(--accent-ink);
  font-size: 11px;
  font-weight: 500;
  margin-left: 6px;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  font: inherit;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 15px;
  line-height: 1.6;
  width: 100%;
  transition: border-color .15s, background .15s;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-card);
}
.contact-form textarea { resize: vertical; min-height: 120px; }
.contact-form select {
  appearance: none;
  -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-3) 50%), linear-gradient(135deg, var(--ink-3) 50%, transparent 50%);
  background-position: calc(100% - 18px) center, calc(100% - 12px) center;
  background-size: 6px 6px;
  background-repeat: no-repeat;
  padding-right: 36px;
}
.contact-form .form-actions {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.contact-form button[type="submit"] {
  background: var(--ink);
  color: var(--bg);
  border: 0;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  transition: transform .15s, background .15s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.contact-form button[type="submit"]:hover:not(:disabled) {
  background: #000;
  transform: translateY(-1px);
}
.contact-form button[type="submit"]:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.contact-form .form-note {
  font-size: 12.5px;
  color: var(--ink-3);
  text-align: center;
}
.contact-form .form-error {
  margin-top: 8px;
  padding: 12px 16px;
  background: #FBEEEA;
  border: 1px solid #E6C3B8;
  border-radius: 10px;
  color: #8C3A1F;
  font-size: 13.5px;
  display: none;
}
.contact-form.is-error .form-error { display: block; }
.contact-success {
  display: none;
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  padding: 56px 32px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 18px;
}
.contact-success .checkmark {
  width: 56px; height: 56px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-ink);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  font-weight: 600;
}
.contact-success h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 12px;
  color: var(--ink);
}
.contact-success p {
  font-size: 14.5px;
  color: var(--ink-2);
  line-height: 1.9;
  margin: 0;
}
.contact.is-sent .contact-form { display: none; }
.contact.is-sent .contact-success { display: block; }
@media (max-width: 640px) {
  .contact-form { padding: 28px 22px; }
  .contact-form .form-row { grid-template-columns: 1fr; gap: 18px; }
}

/* ─── Footer ─── */
footer {
  padding: 56px 0 40px;
  border-top: 1px solid var(--line-soft);
  background: var(--ink);
  color: #C9C6BE;
}
.foot-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}
.foot-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  gap: 40px;
  flex-wrap: wrap;
}
.foot-brand {
  display: flex; flex-direction: column; gap: 12px;
  max-width: 38ch;
}
.foot-brand .brand { color: #fff; }
.foot-brand .brand-mark { background: var(--bg); color: var(--ink); }
.foot-tagline { font-size: 13px; color: #989590; line-height: 1.8; }
.foot-links { display: flex; gap: 36px; flex-wrap: wrap; }
.foot-col { display: flex; flex-direction: column; gap: 10px; }
.foot-col-h {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: #75726B;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.foot-col a {
  font-size: 13.5px;
  color: #C9C6BE;
  transition: color .15s;
}
.foot-col a:hover { color: #fff; }
.foot-bot {
  margin-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: #75726B;
  font-family: var(--font-mono);
  flex-wrap: wrap;
  gap: 12px;
}
.foot-company {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 13px;
}
.foot-company a {
  color: #C9C6BE;
  transition: color .15s;
}
.foot-company a:hover { color: #fff; }

@media (max-width: 880px) {
  .nav-links { display: none; }
  .hero { padding: 64px 0 72px; }
  .hero-diagram { grid-template-columns: 1fr; gap: 24px; padding: 24px; }
  .hd-col { border-right: 0; border-bottom: 1px solid var(--line-soft); padding-bottom: 24px; }
  .hd-col:last-child { border-bottom: 0; padding-bottom: 0; }
  .about-grid, .faq-grid { grid-template-columns: 1fr; gap: 40px; }
  .step { grid-template-columns: 1fr; gap: 20px; padding: 36px 0; }
  .step-num-big { font-size: 40px; }
  .compare { grid-template-columns: 1fr; }
  .compare-col + .compare-col { border-left: 0; border-top: 1px solid var(--line); }
  section.block { padding: 72px 0; }
  .cta { padding: 80px 0; }
}

/* ─── SEO Description ─── */
.seo-desc {
  padding: 72px 0 96px;
  border-top: 1px solid var(--line-soft);
  background: var(--bg-soft);
}
.seo-desc-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 32px;
}
.seo-desc h2 {
  font-size: 20px;
  letter-spacing: 0.02em;
  margin: 0 0 20px;
  color: var(--ink-2);
}
.seo-desc p {
  font-size: 14px;
  line-height: 2;
  color: var(--ink-3);
  margin: 0;
}
@media (max-width: 880px) {
  .seo-desc { padding: 56px 0 72px; }
  .seo-desc h2 { font-size: 18px; }
  .seo-desc p { font-size: 13.5px; line-height: 1.95; }
}

/* ─── Related Insights ─── */
.related-insights {
  padding: 72px 0 96px;
  border-top: 1px solid var(--line-soft);
  background: var(--bg);
}
.related-insights-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}
.related-insights h2 {
  font-size: 22px;
  margin: 0 0 28px;
  color: var(--ink);
}
.related-insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.related-insights-card {
  display: block;
  padding: 28px 24px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: border-color .15s, transform .15s;
  color: inherit;
  text-decoration: none;
}
.related-insights-card:hover {
  border-color: var(--ink-3);
  transform: translateY(-2px);
}
.related-insights-card .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.related-insights-card h3 {
  font-size: 16px;
  line-height: 1.55;
  margin: 0 0 10px;
  color: var(--ink);
}
.related-insights-card p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-3);
  margin: 0;
}
@media (max-width: 880px) {
  .related-insights { padding: 56px 0 72px; }
  .related-insights h2 { font-size: 19px; }
}

/* ─── Insight Article ─── */
.insight-hero {
  padding: 88px 0 56px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line-soft);
}
.insight-hero-inner {
  max-width: var(--maxw-narrow);
  margin: 0 auto;
  padding: 0 32px;
}
.insight-hero .eyebrow { margin-bottom: 24px; }
.insight-hero h1 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.4;
  letter-spacing: -0.005em;
  margin: 0 0 28px;
  color: var(--ink);
  text-wrap: pretty;
}
.insight-hero .lead {
  font-size: 16px;
  line-height: 2;
  color: var(--ink-2);
  margin: 0;
  max-width: 60ch;
}
.insight-meta {
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.insight-breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}
.insight-breadcrumb a {
  color: var(--ink-3);
  text-decoration: none;
  transition: color .15s;
}
.insight-breadcrumb a:hover { color: var(--ink); }
.insight-breadcrumb .sep { margin: 0 8px; color: var(--ink-4); }

.insight-body {
  padding: 72px 0 96px;
}
.insight-body-inner {
  max-width: var(--maxw-narrow);
  margin: 0 auto;
  padding: 0 32px;
}
.insight-body h2 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(22px, 2.6vw, 28px);
  line-height: 1.5;
  letter-spacing: -0.005em;
  margin: 64px 0 24px;
  color: var(--ink);
  text-wrap: pretty;
}
.insight-body h2:first-child { margin-top: 0; }
.insight-body h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.55;
  margin: 40px 0 14px;
  color: var(--ink);
}
.insight-body p {
  font-size: 15.5px;
  line-height: 2.05;
  color: var(--ink-2);
  margin: 0 0 20px;
}
.insight-body p strong,
.insight-body p b { color: var(--ink); font-weight: 600; }
.insight-body ul,
.insight-body ol {
  margin: 0 0 24px;
  padding-left: 1.5rem;
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 2;
}
.insight-body ul li,
.insight-body ol li { margin-bottom: 8px; }
.insight-body a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--ink-4);
  transition: color .15s, text-decoration-color .15s;
}
.insight-body a:hover {
  color: var(--accent-ink);
  text-decoration-color: var(--accent);
}
.insight-body a.btn {
  text-decoration: none;
}
.insight-body a.btn-primary,
.insight-body a.btn-primary:hover {
  color: var(--bg);
  text-decoration: none;
}
.insight-body a.btn-ghost,
.insight-body a.btn-ghost:hover {
  color: var(--ink);
  text-decoration: none;
}
.insight-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.insight-body table thead { background: var(--bg-soft); }
.insight-body table th,
.insight-body table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.7;
}
.insight-body table th {
  font-weight: 600;
  color: var(--ink);
  font-size: 13px;
  letter-spacing: 0.02em;
}
.insight-body table tr:last-child td { border-bottom: 0; }

.insight-cta {
  margin-top: 56px;
  padding: 44px 40px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 18px;
  text-align: center;
}
.insight-cta h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.5;
  margin: 0 0 14px;
  color: var(--ink);
}
.insight-cta p {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink-2);
  margin: 0 0 28px;
  max-width: 44ch;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 880px) {
  .insight-hero { padding: 56px 0 36px; }
  .insight-body { padding: 48px 0 72px; }
  .insight-body h2 { margin-top: 48px; }
  .insight-cta { padding: 32px 24px; }
}

/* ─── Insight Inline CTA（記事中） ─── */
.insight-inline-cta {
  margin: 48px 0;
  padding: 24px 28px;
  background: var(--accent-soft);
  border: 1px solid color-mix(in oklab, var(--accent) 18%, transparent);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.insight-inline-cta .iic-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  flex: 1 1 280px;
}
.insight-inline-cta .iic-text strong {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.55;
}
.insight-inline-cta .iic-text span {
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.7;
}
.insight-inline-cta .iic-ctas {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.insight-inline-cta .iic-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform .15s, background .15s, border-color .15s;
  white-space: nowrap;
}
.insight-inline-cta .iic-btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.insight-inline-cta .iic-btn-primary:hover {
  background: #000;
  transform: translateY(-1px);
}
.insight-inline-cta .iic-btn-ghost {
  background: var(--bg-card);
  color: var(--ink);
  border-color: var(--line);
}
.insight-inline-cta .iic-btn-ghost:hover {
  border-color: var(--ink-3);
  transform: translateY(-1px);
}
.insight-body a.iic-btn,
.insight-body a.iic-btn:hover { text-decoration: none; }

/* ─── Insight Contact（記事末尾の軽量フォーム） ─── */
.insight-contact {
  margin-top: 64px;
  padding: 48px 44px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 18px;
}
.insight-contact h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.5;
  margin: 0 0 12px;
  color: var(--ink);
  text-align: center;
}
.insight-contact .insight-contact-lead {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink-2);
  margin: 0 auto 28px;
  max-width: 52ch;
  text-align: center;
}
.insight-contact-form {
  max-width: 560px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px 28px 24px;
}
.insight-contact-form .icf-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.insight-contact-form .icf-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.insight-contact-form .icf-row .icf-field { margin-bottom: 0; }
.insight-contact-form label {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-2);
  letter-spacing: 0.01em;
}
.insight-contact-form label .req {
  color: var(--accent-ink);
  font-size: 10.5px;
  font-weight: 500;
  margin-left: 6px;
}
.insight-contact-form input,
.insight-contact-form textarea {
  font: inherit;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 13px;
  font-size: 14.5px;
  line-height: 1.6;
  width: 100%;
  transition: border-color .15s, background .15s;
}
.insight-contact-form input:focus,
.insight-contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-card);
}
.insight-contact-form textarea { resize: vertical; min-height: 88px; }
.insight-contact-form .icf-actions {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.insight-contact-form .icf-submit {
  background: var(--ink);
  color: var(--bg);
  border: 0;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 500;
  transition: transform .15s, background .15s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.insight-contact-form .icf-submit:hover:not(:disabled) {
  background: #000;
  transform: translateY(-1px);
}
.insight-contact-form .icf-submit:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.insight-contact-form .icf-booking {
  font-size: 13.5px;
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color .15s, border-color .15s;
}
.insight-contact-form .icf-booking:hover {
  color: var(--ink);
  border-color: var(--ink-3);
}
.insight-body a.icf-booking,
.insight-body a.icf-booking:hover { text-decoration: none; }
.insight-contact-form .icf-note {
  font-size: 12px;
  color: var(--ink-3);
  text-align: center;
  margin: 14px 0 0;
}
.insight-contact-form .icf-error {
  margin-top: 8px;
  padding: 11px 14px;
  background: #FBEEEA;
  border: 1px solid #E6C3B8;
  border-radius: 10px;
  color: #8C3A1F;
  font-size: 13px;
  display: none;
}
.insight-contact-form.is-error .icf-error { display: block; }

.insight-contact-success {
  display: none;
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  padding: 44px 28px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
}
.insight-contact-success .checkmark {
  width: 52px; height: 52px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-ink);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  font-weight: 600;
}
.insight-contact-success h4 {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 10px;
  color: var(--ink);
}
.insight-contact-success p {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.85;
  margin: 0;
}
.insight-contact.is-sent .insight-contact-form { display: none; }
.insight-contact.is-sent .insight-contact-success { display: block; }
.insight-contact.is-sent > h3,
.insight-contact.is-sent > .insight-contact-lead { display: none; }

@media (max-width: 640px) {
  .insight-inline-cta { padding: 20px 22px; gap: 16px; }
  .insight-inline-cta .iic-ctas { width: 100%; }
  .insight-inline-cta .iic-btn { flex: 1 1 auto; justify-content: center; }
  .insight-contact { padding: 36px 22px; }
  .insight-contact-form { padding: 24px 20px; }
  .insight-contact-form .icf-row { grid-template-columns: 1fr; gap: 16px; }
}

/* ─── FDE chat popup (滞在20秒で右下から訴求) ─── */
.fde-popup {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 80;
  width: 280px;
  padding: 20px 22px 22px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 12px 32px rgba(26, 25, 21, 0.14);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .25s ease, transform .25s ease;
}
.fde-popup.is-visible { opacity: 1; transform: translateY(0); }
.fde-popup-close {
  position: absolute;
  top: 8px;
  right: 10px;
  width: 28px;
  height: 28px;
  border: 0;
  background: transparent;
  font-size: 22px;
  line-height: 1;
  color: var(--ink-3);
  border-radius: 999px;
  transition: background .15s, color .15s;
}
.fde-popup-close:hover { background: var(--bg-soft); color: var(--ink); }
.fde-popup-title {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}
.fde-popup-cta {
  display: block;
  text-align: center;
  padding: 11px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background .15s, transform .15s;
}
.fde-popup-cta:hover { background: #000; transform: translateY(-1px); }
@media (max-width: 640px) {
  .fde-popup { right: 12px; bottom: 12px; width: calc(100vw - 24px); max-width: 320px; }
}