:root {
  --bg: #fffaf6;
  --bg-alt: #f7efe7;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #ffffff;
  --text: #2d1d14;
  --muted: #6f5647;
  --primary: #b65c32;
  --primary-dark: #8d4321;
  --accent: #f1b78a;
  --border: rgba(120, 74, 44, 0.14);
  --shadow: 0 18px 45px rgba(114, 65, 36, 0.12);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 214, 186, 0.75), transparent 32%),
    linear-gradient(180deg, #fff8f2 0%, #fffaf6 55%, #fdf3ea 100%);
  line-height: 1.75;
}

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

.hero {
  padding: 28px clamp(20px, 4vw, 56px) 80px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.64);
  border: 1px solid var(--border);
  border-radius: 999px;
  backdrop-filter: blur(12px);
  position: sticky;
  top: 14px;
  z-index: 20;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), #d98957);
  color: #fff;
  font-size: 1.5rem;
  box-shadow: var(--shadow);
}

.brand-sub,
.eyebrow,
.section-label,
.tool-tag,
.step-card span {
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-sub {
  margin: 0 0 2px;
  font-size: 0.78rem;
  color: var(--muted);
}

.brand h1 {
  margin: 0;
  font-size: clamp(1.2rem, 2vw, 1.7rem);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 18px;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-weight: 500;
  color: var(--muted);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--primary);
}

.menu-toggle {
  display: none;
  border: none;
  background: transparent;
  padding: 6px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  border-radius: 999px;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 32px;
  align-items: center;
  margin-top: 56px;
}

.hero-copy h2 {
  margin: 10px 0 18px;
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: 1.12;
}

.eyebrow,
.section-label,
.tool-tag {
  color: var(--primary);
  font-weight: 800;
  font-size: 0.82rem;
}

.lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 52rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary), #d57a47);
  color: #fff;
  box-shadow: var(--shadow);
}

.btn.secondary {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.72);
}

.hero-card,
.content-card,
.pillar-card,
.tool-card,
.step-card,
.timeline-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero-card {
  padding: 28px;
}

.hero-card h3 {
  margin-top: 0;
}

.hero-card ul {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
}

.hero-card li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(140, 90, 58, 0.15);
}

.hero-card li:last-child {
  border-bottom: none;
}

main {
  padding: 0 clamp(20px, 4vw, 56px) 64px;
}

.section {
  margin-bottom: 34px;
  padding: 42px 0;
}

.section.alt {
  background: linear-gradient(180deg, rgba(244, 230, 219, 0.68), rgba(255, 255, 255, 0.3));
  border-radius: 36px;
  padding: 42px clamp(18px, 3vw, 28px);
}

.section-heading {
  max-width: 860px;
  margin-bottom: 28px;
}

.section-heading.centered {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-heading h2 {
  margin: 8px 0 12px;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  line-height: 1.2;
}

.section-heading p:last-child {
  color: var(--muted);
}

.pillars,
.content-grid,
.steps,
.tool-showcase {
  display: grid;
  gap: 20px;
}

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

.pillar-card,
.step-card,
.tool-card,
.content-card {
  padding: 24px;
}

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

.content-card.wide {
  grid-column: 1 / -1;
}

.icon-wrap {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: rgba(182, 92, 50, 0.12);
  color: var(--primary);
  font-size: 1.3rem;
  margin-bottom: 14px;
}

.content-card h3,
.pillar-card h3,
.tool-card h3,
.step-card h3,
.timeline-item h3 {
  margin-top: 0;
  margin-bottom: 10px;
}

.content-card p:last-child,
.pillar-card p:last-child,
.tool-card p:last-child,
.step-card p:last-child {
  margin-bottom: 0;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  padding: 24px;
  align-items: start;
}

.timeline-badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), #d78353);
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
}

.tool-showcase {
  grid-template-columns: 1.2fr 0.8fr;
}

.tool-card.featured {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}

.tool-note {
  padding: 18px;
  background: rgba(241, 183, 138, 0.18);
  border-radius: 20px;
}

.steps {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.step-card span {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 800;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 26px clamp(20px, 4vw, 56px) 40px;
  color: var(--muted);
}

.site-footer a {
  color: var(--primary);
  font-weight: 700;
}

ul,
ol {
  padding-left: 1.2rem;
}

@media (max-width: 980px) {
  .hero-content,
  .tool-showcase,
  .tool-card.featured,
  .pillars,
  .content-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .topbar {
    border-radius: 28px;
    align-items: flex-start;
  }

  .menu-toggle {
    display: block;
    margin-left: auto;
  }

  .nav-links {
    width: 100%;
    display: none;
    flex-direction: column;
    padding-top: 14px;
  }

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

@media (max-width: 720px) {
  .hero {
    padding-top: 18px;
    padding-bottom: 56px;
  }

  .topbar {
    padding: 14px 16px;
  }

  .brand-mark {
    width: 44px;
    height: 44px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .timeline-badge {
    width: 42px;
    height: 42px;
  }

  .section.alt {
    border-radius: 26px;
  }
}