:root {
  --bg: #f6f1e8;
  --paper: rgba(255, 252, 247, 0.92);
  --paper-strong: #fffaf1;
  --ink: #1f1a16;
  --muted: #62574d;
  --line: rgba(31, 26, 22, 0.12);
  --line-strong: rgba(31, 26, 22, 0.24);
  --accent: #0f766e;
  --accent-strong: #115e59;
  --accent-soft: rgba(15, 118, 110, 0.12);
  --gold: #d97706;
  --shadow: 0 18px 60px rgba(62, 44, 23, 0.12);
  --headline-font: "Avenir Next", "Hiragino Sans", "Yu Gothic", sans-serif;
  --body-font: "IBM Plex Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --content-width: min(1120px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--body-font);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(217, 119, 6, 0.14), transparent 30%),
    radial-gradient(circle at top right, rgba(15, 118, 110, 0.18), transparent 32%),
    linear-gradient(180deg, #f8f4ed 0%, #f1e8db 100%);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.site-shell {
  width: var(--content-width);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(246, 241, 232, 0.82);
  border-bottom: 1px solid rgba(31, 26, 22, 0.08);
}

.site-header-inner {
  width: var(--content-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.9), rgba(217, 119, 6, 0.78));
  color: white;
  font: 700 18px/1 var(--headline-font);
  letter-spacing: 0.08em;
  box-shadow: 0 10px 30px rgba(15, 118, 110, 0.24);
}

.brand-copy strong,
.brand-copy span {
  display: block;
}

.brand-copy strong {
  font-family: var(--headline-font);
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.brand-copy span {
  color: var(--muted);
  font-size: 0.85rem;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: 999px;
  padding: 10px 14px;
  font: inherit;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 500;
}

.site-nav a.active,
.site-nav a:hover {
  color: var(--ink);
  background: rgba(31, 26, 22, 0.05);
}

.hero {
  padding: 72px 0 28px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.content-card,
.step-card,
.matrix-card,
.faq-card,
.callout,
.page-hero,
.table-wrap,
.footer-card {
  background: var(--paper);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow);
  border-radius: 28px;
}

.hero-copy {
  padding: 38px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

h1,
h2,
h3,
h4 {
  font-family: var(--headline-font);
  margin: 0;
  line-height: 1.1;
}

h1 {
  font-size: clamp(2.6rem, 6vw, 5rem);
  margin-top: 18px;
  letter-spacing: -0.04em;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  letter-spacing: -0.03em;
}

h3 {
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

p,
li,
td,
th {
  line-height: 1.8;
}

.lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 46rem;
  margin: 22px 0 0;
}

.hero-actions,
.inline-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
}

.button-primary {
  background: var(--ink);
  color: white;
}

.button-primary:hover {
  background: #000;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.7);
  border-color: var(--line);
}

.hero-panel {
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(255, 250, 241, 0.92), rgba(253, 246, 236, 0.92)),
    var(--paper);
}

.stat-grid,
.card-grid,
.step-grid,
.faq-grid,
.analysis-grid,
.support-grid {
  display: grid;
  gap: 18px;
}

.stat-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.stat strong {
  display: block;
  font-family: var(--headline-font);
  font-size: 1.8rem;
  margin-bottom: 6px;
}

.section {
  padding: 28px 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
  margin-bottom: 22px;
}

.section-head p {
  max-width: 40rem;
  margin: 0;
  color: var(--muted);
}

.card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.content-card,
.step-card,
.matrix-card,
.faq-card,
.callout,
.footer-card,
.page-hero,
.table-wrap {
  padding: 24px;
}

.content-card p,
.step-card p,
.matrix-card p,
.faq-card p,
.callout p,
.page-hero p {
  margin: 12px 0 0;
  color: var(--muted);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(17, 94, 89, 0.08);
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 600;
}

.step-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.step-card strong {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--ink);
  color: white;
  margin-bottom: 14px;
}

.analysis-grid,
.support-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.matrix-card ul,
.faq-card ul,
.content-card ul,
.callout ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.page-hero {
  margin-top: 44px;
  padding: 34px;
}

.page-hero .meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.meta span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(31, 26, 22, 0.05);
  color: var(--muted);
  font-size: 0.92rem;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

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

th {
  font-family: var(--headline-font);
  font-size: 0.95rem;
}

.faq-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.callout {
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.12), rgba(217, 119, 6, 0.12)),
    var(--paper);
}

.site-footer {
  padding: 24px 0 56px;
}

.footer-card {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}

.footer-card p {
  margin: 8px 0 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--accent-strong);
  font-weight: 700;
}

code {
  font-family: "SFMono-Regular", "Menlo", monospace;
  background: rgba(31, 26, 22, 0.06);
  padding: 0.18em 0.42em;
  border-radius: 0.5em;
}

@media (max-width: 960px) {
  .hero-grid,
  .card-grid,
  .step-grid,
  .analysis-grid,
  .support-grid,
  .faq-grid,
  .footer-card {
    grid-template-columns: 1fr;
  }

  .site-header-inner {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 4px;
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    border-radius: 16px;
  }

  .section-head {
    align-items: start;
    flex-direction: column;
  }

  table {
    min-width: 640px;
  }
}

@media (max-width: 640px) {
  .hero,
  .section {
    padding-top: 20px;
  }

  .hero-copy,
  .hero-panel,
  .content-card,
  .step-card,
  .matrix-card,
  .faq-card,
  .callout,
  .page-hero,
  .table-wrap,
  .footer-card {
    padding: 20px;
    border-radius: 22px;
  }

  h1 {
    font-size: 2.5rem;
  }
}