:root {
  --bg: #fbfaf7;
  --ink: #1f2a24;
  --muted: #65736a;
  --green: #2f6f4e;
  --green-dark: #194831;
  --accent: #e99037;
  --line: #e6e0d7;
  --card: #ffffff;
  --soft: #f1eee7;
  --shadow: 0 20px 45px rgba(26, 39, 31, 0.10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.8;
  color: var(--ink);
  background: var(--bg);
}
a { color: inherit; }
img { max-width: 100%; display: block; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 56px);
  background: rgba(251, 250, 247, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(230, 224, 215, .7);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--green-dark);
  color: #fff;
  font-weight: 800;
  letter-spacing: .04em;
}
.brand strong { display: block; line-height: 1.2; }
.brand small { display: block; color: var(--muted); font-size: .8rem; }
.nav { display: flex; gap: 18px; font-size: .95rem; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--green-dark); }

.hero {
  min-height: 72vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .78fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
  padding: clamp(56px, 8vw, 104px) clamp(20px, 6vw, 80px);
  overflow: hidden;
}
.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .86rem;
}
h1, h2, h3, h4 { line-height: 1.35; margin: 0; }
h1 {
  font-size: clamp(2.45rem, 6vw, 5rem);
  letter-spacing: -.04em;
  margin-bottom: 22px;
}
.lead {
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  color: var(--muted);
  max-width: 720px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 32px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  background: #fff;
}
.button.primary { background: var(--green-dark); color: #fff; border-color: var(--green-dark); }

.hero-panel {
  position: relative;
  min-height: 420px;
  border-radius: 34px;
  background:
    radial-gradient(circle at 24% 18%, rgba(233, 144, 55, .28), transparent 34%),
    radial-gradient(circle at 82% 70%, rgba(47, 111, 78, .25), transparent 34%),
    linear-gradient(135deg, #fff 0%, #ede8df 100%);
  box-shadow: var(--shadow);
}
.panel-card {
  position: absolute;
  width: min(76%, 340px);
  padding: 18px 22px;
  border-radius: 22px;
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(255,255,255,.75);
  box-shadow: 0 14px 30px rgba(26, 39, 31, 0.12);
  font-weight: 800;
}
.card-top { top: 56px; left: 34px; }
.card-mid { top: 170px; right: 28px; }
.card-bottom { bottom: 56px; left: 58px; }

.section {
  padding: 72px clamp(20px, 6vw, 80px);
  max-width: 1220px;
  margin: 0 auto;
}
.section.tinted {
  max-width: none;
  background: var(--soft);
}
.section.tinted > * { max-width: 1220px; margin-left: auto; margin-right: auto; }
.section-heading { margin-bottom: 28px; }
.section-heading h2, .contact h2 { font-size: clamp(1.9rem, 3vw, 3rem); }
.two-col {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 30px;
  align-items: start;
}
.profile-card, .service-card, .flow-box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 28px;
  box-shadow: 0 12px 30px rgba(26, 39, 31, 0.06);
}
.profile-card h3 { font-size: 1.45rem; margin-bottom: 4px; }
.profile-card p:first-of-type { color: var(--muted); margin-top: 0; }
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.service-card h3 { font-size: 1.25rem; margin-bottom: 12px; }
.service-card h4 { margin-top: 22px; color: var(--green-dark); }
.service-card p { color: var(--muted); }

.case-card {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 34px;
  align-items: center;
  margin-top: 30px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: #fff;
  box-shadow: var(--shadow);
}
.case-card.reverse { grid-template-columns: minmax(0, 1fr) minmax(300px, .75fr); }
.case-label {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--green-dark);
  background: #eaf4ed;
  font-weight: 800;
  font-size: .86rem;
  margin: 0 0 12px;
}
.case-card h3 { font-size: clamp(1.55rem, 2.6vw, 2.3rem); margin-bottom: 18px; }
.case-card p { color: var(--muted); }
.case-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 18px;
  padding-left: 1.1em;
  margin: 20px 0;
}
.case-points li { color: var(--ink); }
.case-keywords { font-size: .92rem; }
.case-image { margin: 0; }
.case-image img {
  width: 100%;
  height: auto;
  border-radius: 22px;
  border: 1px solid var(--line);
  box-shadow: 0 12px 26px rgba(0,0,0,.12);
}
.case-image figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: .86rem;
  text-align: center;
}
.flow-box {
  display: grid;
  gap: 10px;
  text-align: center;
  font-weight: 800;
}
.flow-box div {
  padding: 12px 14px;
  border-radius: 16px;
  background: #f7f4ee;
}
.flow-box span { color: var(--accent); }

.contact {
  text-align: center;
  border-top: 1px solid var(--line);
}
.mail a {
  display: inline-flex;
  margin-top: 12px;
  padding: 13px 22px;
  border-radius: 999px;
  background: var(--green-dark);
  color: #fff;
  text-decoration: none;
  font-weight: 800;
}
.site-footer {
  padding: 28px;
  text-align: center;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 900px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .nav { flex-wrap: wrap; gap: 12px 16px; }
  .hero, .two-col, .cards, .case-card, .case-card.reverse { grid-template-columns: 1fr; }
  .hero-panel { min-height: 330px; }
  .case-points { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .section, .hero { padding-left: 18px; padding-right: 18px; }
  .case-card { padding: 18px; border-radius: 26px; }
  .panel-card { width: 82%; }
  .card-top { left: 18px; }
  .card-mid { right: 18px; }
  .card-bottom { left: 28px; }
}