:root {
  --color-showa-green: #009944;
  --color-forest-authority: #103306;
  --color-black-green: #061609;
  --color-paper-white: #ffffff;
  --color-off-white: #f8f8f8;
  --color-pale-green-wash: #eff7f1;
  --color-concrete-gray: #eaeaea;
  --color-ink: #1f2420;
  --color-muted: #667067;
  --color-line: #dfe7df;
  --color-proof-gold: #b58a2b;
  --font-heading: "Yu Mincho", "Hiragino Mincho ProN", serif;
  --font-body: "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: var(--color-ink);
  font-family: var(--font-body);
  line-height: 1.8;
}

* { box-sizing: border-box; }
html, body { overflow-x: clip; }
body { margin: 0; background: var(--color-paper-white); }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1rem; }

.site-header {
  align-items: center;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--color-line);
  display: grid;
  gap: 24px;
  grid-template-columns: auto 1fr auto;
  left: 0;
  padding: 18px 40px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand img { width: 230px; }
.global-nav { display: flex; gap: 22px; justify-content: flex-end; font-size: 14px; font-weight: 700; }
.header-contact, .button {
  border: 1px solid var(--color-forest-authority);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  font-weight: 700;
}
.header-contact, .button.primary { background: var(--color-showa-green); border-color: var(--color-showa-green); color: #fff; }
.button.ghost { background: transparent; color: var(--color-forest-authority); }
.button-light { border-color: #fff; color: #fff; }
.button-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

.home-hero { min-height: 720px; position: relative; background: var(--color-black-green); overflow: hidden; }
.home-hero > img { height: 720px; width: 100%; object-fit: cover; opacity: .74; }
.home-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6,22,9,.92), rgba(6,22,9,.58), rgba(6,22,9,.08)); }
.home-hero__panel {
  color: #fff;
  left: max(40px, calc((100vw - 1180px) / 2));
  max-width: 630px;
  position: absolute;
  top: 50%;
  transform: translateY(-45%);
  z-index: 1;
}
.eyebrow { color: var(--color-showa-green); font-size: 13px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.home-hero .eyebrow, .contact-band .eyebrow, .dark-recruit .eyebrow { color: #cfe9d6; }
h1, h2, h3 { font-family: var(--font-heading); line-height: 1.35; margin: 0; }
.home-hero h1 { font-size: clamp(42px, 6vw, 82px); margin: 20px 0; }
.home-hero p { font-size: 18px; }

.container { width: min(1180px, calc(100vw - 48px)); margin: 0 auto; padding: 96px 0; }
.narrow { width: min(880px, calc(100vw - 48px)); }
.section-title { margin-bottom: 36px; position: relative; }
.section-title span { color: #dfeee2; display: block; font-family: Georgia, serif; font-size: clamp(52px, 10vw, 120px); font-weight: 700; line-height: .8; }
.section-title h2 { color: var(--color-forest-authority); font-size: clamp(28px, 4vw, 46px); margin-top: -18px; }
.section-title h2::after { background: var(--color-forest-authority); content: ""; display: block; height: 2px; margin-top: 18px; width: 180px; }
.section-title p { color: var(--color-muted); max-width: 760px; margin-top: 18px; }

.news-strip {
  align-items: center;
  border-bottom: 1px solid var(--color-line);
  display: flex;
  gap: 28px;
  margin: 0 auto;
  padding: 24px max(24px, calc((100vw - 1180px) / 2));
}
.news-strip strong { color: var(--color-forest-authority); }
.split { display: grid; grid-template-columns: 1fr 520px; gap: 64px; align-items: center; }
.split-image { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.portrait { max-height: 620px; object-fit: cover; width: 100%; }

.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.service-card, .work-card, .proof-card {
  background: #fff;
  border: 1px solid var(--color-line);
}
.service-card img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.service-card div, .work-card div { padding: 24px; }
.service-card h3, .work-card h3 { color: var(--color-forest-authority); font-size: 23px; }

.proof-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.proof-card { padding: 26px; min-height: 150px; }
.proof-card span, .work-card span { color: var(--color-proof-gold); display: block; font-weight: 700; margin-bottom: 10px; }
.proof-card strong { color: var(--color-forest-authority); display: block; font-size: 20px; line-height: 1.55; }
.works-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.work-card img { aspect-ratio: 16 / 10; object-fit: cover; width: 100%; }
.work-card a { color: var(--color-showa-green); font-weight: 700; }
.award-gallery, .cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 32px; }
.award-gallery img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; border: 1px solid var(--color-line); }
.cert-grid img { background: var(--color-off-white); border: 1px solid var(--color-line); max-height: 360px; object-fit: contain; width: 100%; }

.dark-recruit, .contact-band {
  align-items: center;
  background: var(--color-black-green);
  color: #fff;
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr auto;
  padding: 72px max(24px, calc((100vw - 1180px) / 2));
}
.dark-recruit h2, .contact-band h2 { font-size: clamp(28px, 4vw, 46px); margin: 8px 0 16px; }
.contact-band { background: var(--color-forest-authority); }
.contact-band__actions { display: grid; gap: 14px; min-width: 320px; }
.tel { font-family: Georgia, serif; font-size: 34px; font-weight: 700; }

.page-hero {
  align-items: stretch;
  background: var(--color-black-green);
  color: #fff;
  display: grid;
  grid-template-columns: 1fr 47%;
  min-height: 460px;
}
.page-hero__text { align-self: center; padding: 100px max(40px, calc((100vw - 1180px) / 2)) 80px; }
.page-hero h1 { font-size: clamp(40px, 6vw, 72px); margin: 12px 0 24px; }
.page-hero img { height: 100%; min-height: 460px; object-fit: cover; width: 100%; }

.number-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.number-list article { background: var(--color-pale-green-wash); border: 1px solid var(--color-line); padding: 24px; }
.number-list span { border: 1px dashed var(--color-forest-authority); border-radius: 50%; color: var(--color-forest-authority); display: grid; font-family: Georgia, serif; height: 48px; place-items: center; width: 48px; }
.flow-list { display: grid; gap: 12px; padding-left: 22px; }
.data-table { border-top: 1px solid var(--color-line); margin: 0 0 32px; }
.data-table div, .summary-row { border-bottom: 1px solid var(--color-line); display: grid; grid-template-columns: 220px 1fr; gap: 24px; padding: 20px 0; }
.data-table dt, .summary-row dt { color: var(--color-forest-authority); font-weight: 700; }

.contact-layout { display: grid; grid-template-columns: 360px 1fr; gap: 44px; align-items: start; }
.phone-panel, .form-panel {
  border: 1px solid var(--color-line);
  padding: 32px;
}
.phone-panel { background: var(--color-pale-green-wash); }
.phone-panel h2, .form-panel h2 { color: var(--color-forest-authority); font-family: var(--font-heading); margin-top: 0; }
.phone-panel div { border-top: 1px solid var(--color-line); padding: 20px 0; }
.phone-panel span { display: block; font-weight: 700; }
.phone-panel a { color: var(--color-forest-authority); font-family: Georgia, serif; font-size: 28px; font-weight: 700; }
.field-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.field.full { grid-column: 1 / -1; }
label { display: block; font-weight: 700; margin-bottom: 8px; }
.required { background: var(--color-showa-green); color: #fff; font-size: 12px; margin-left: 8px; padding: 2px 6px; }
input, textarea {
  border: 1px solid #cfd9cf;
  border-radius: 0;
  font: inherit;
  min-height: 48px;
  padding: 10px 12px;
  width: 100%;
}
input[type="checkbox"] { min-height: auto; width: auto; }
textarea { min-height: 180px; resize: vertical; }
.confirm-page, .thanks-page { min-height: 52vh; }
.empty-summary { background: var(--color-pale-green-wash); padding: 20px; }

.article-body p { font-size: 18px; }
.signature { color: var(--color-forest-authority); font-weight: 700; margin-top: 28px; }
.site-footer { background: var(--color-showa-green); color: #fff; padding: 60px max(24px, calc((100vw - 1180px) / 2)) 24px; }
.footer-inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
.site-footer img { width: 250px; margin-bottom: 28px; }
.site-footer nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.copyright { border-top: 1px solid rgba(255,255,255,.32); margin-top: 44px; padding-top: 24px; }

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr; padding: 14px 20px; position: static; }
  .brand img { width: 190px; }
  .global-nav { flex-wrap: wrap; justify-content: flex-start; gap: 12px; }
  .header-contact { justify-self: start; }
  .home-hero, .home-hero > img { min-height: 620px; height: 620px; }
  .home-hero__panel { left: 24px; right: 24px; }
  .container { padding: 64px 0; }
  .split, .page-hero, .contact-layout, .dark-recruit, .contact-band, .footer-inner { grid-template-columns: 1fr; }
  .page-hero__text { padding: 64px 24px; }
  .page-hero img { min-height: 280px; }
  .service-grid, .proof-grid, .works-grid, .award-gallery, .cert-grid, .number-list, .field-grid { grid-template-columns: 1fr; }
  .data-table div, .summary-row { grid-template-columns: 1fr; gap: 8px; }
  .news-strip { align-items: flex-start; flex-direction: column; gap: 8px; }
  .tel { font-size: 28px; }
  .site-footer nav { grid-template-columns: 1fr 1fr; }
}