:root {
  --green: #1f8a4c;
  --deep: #123528;
  --light: #f4fbf6;
  --cream: #fff8ea;
  --orange: #f29f3d;
  --text: #1f2d2a;
  --muted: #66736f;
  --white: #ffffff;
  --shadow: 0 22px 60px rgba(18, 53, 40, .15);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Noto Sans JP', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.8;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(31, 138, 76, .12);
}
.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 900; }
.brand-logo { width: 42px; height: 42px; }
.brand-text { font-size: 1.15rem; letter-spacing: .02em; }
.global-nav { display: flex; align-items: center; gap: 22px; font-weight: 700; font-size: .94rem; }
.global-nav a { color: var(--deep); }
.global-nav a:hover { color: var(--green); }
.nav-button {
  padding: 10px 18px;
  color: #fff !important;
  background: var(--green);
  border-radius: 999px;
  box-shadow: 0 10px 24px rgba(31,138,76,.24);
}
.menu-button { display: none; border: 0; background: var(--green); color: #fff; border-radius: 12px; padding: 9px 12px; font-size: 1.3rem; }

.hero { position: relative; overflow: hidden; background: linear-gradient(135deg, var(--light), #fff 55%, var(--cream)); }
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 15% 20%, rgba(31,138,76,.16), transparent 26%), radial-gradient(circle at 85% 18%, rgba(242,159,61,.18), transparent 28%), radial-gradient(circle at 70% 90%, rgba(31,138,76,.12), transparent 30%);
}
.hero-inner {
  position: relative;
  max-width: 1180px;
  min-height: 680px;
  margin: 0 auto;
  padding: 86px 22px 72px;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 54px;
  align-items: center;
}
.eyebrow, .section-label {
  display: inline-flex;
  align-items: center;
  color: var(--green);
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .82rem;
  margin: 0 0 10px;
}
.hero h1 {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 1.18;
  color: var(--deep);
  letter-spacing: -.04em;
}
.hero-lead { margin: 24px 0 0; font-size: 1.08rem; color: #3f504b; max-width: 650px; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 900;
  transition: transform .2s ease, box-shadow .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, var(--green), #27a95d); color: #fff; box-shadow: 0 18px 36px rgba(31,138,76,.26); }
.btn-secondary { background: #fff; color: var(--deep); border: 1px solid rgba(18,53,40,.12); }
.hero-note { display: flex; gap: 10px; margin-top: 24px; flex-wrap: wrap; }
.hero-note span { background: rgba(255,255,255,.75); border: 1px solid rgba(31,138,76,.16); border-radius: 999px; padding: 7px 12px; font-size: .88rem; font-weight: 700; color: var(--deep); }
.hero-card { position: relative; background: rgba(255,255,255,.66); border: 1px solid rgba(255,255,255,.9); padding: 18px; border-radius: 34px; box-shadow: var(--shadow); }
.hero-card img { width: 100%; border-radius: 26px; background: #e8f7ee; }
.floating-card { position: absolute; left: 0; bottom: 34px; transform: translateX(-24px); background: #fff; border-radius: 20px; padding: 16px 18px; box-shadow: 0 20px 40px rgba(18,53,40,.18); max-width: 240px; }
.floating-card strong { display: block; color: var(--green); font-size: 1.05rem; }
.floating-card span { font-size: .88rem; color: var(--muted); }

.section { padding: 92px 22px; }
.section-inner { max-width: 1180px; margin: 0 auto; }
.two-column { display: grid; grid-template-columns: 1fr .8fr; gap: 44px; align-items: center; }
.section h2 { margin: 0 0 18px; font-size: clamp(1.9rem, 3.4vw, 3rem); line-height: 1.25; color: var(--deep); letter-spacing: -.03em; }
.section p { color: #485955; margin: 0 0 16px; }
.about { background: #fff; }
.about-panel { background: var(--deep); color: #fff; padding: 34px; border-radius: var(--radius); box-shadow: var(--shadow); }
.about-panel h3 { margin: 0 0 16px; font-size: 1.35rem; }
.about-panel ul { margin: 0; padding-left: 1.2em; }
.about-panel li { margin: 8px 0; }

.services { background: var(--light); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.service-card { background: #fff; padding: 26px; border-radius: var(--radius); border: 1px solid rgba(18,53,40,.08); min-height: 280px; display: flex; flex-direction: column; box-shadow: 0 14px 34px rgba(18,53,40,.07); }
.service-card.active { background: linear-gradient(145deg, #fff, #effaf4); border-color: rgba(31,138,76,.28); }
.service-card:hover { transform: translateY(-4px); transition: .2s ease; box-shadow: var(--shadow); }
.service-icon { width: 58px; height: 58px; display: grid; place-items: center; background: var(--light); border-radius: 18px; font-size: 2rem; margin-bottom: 18px; }
.service-card h3 { margin: 0 0 10px; font-size: 1.25rem; color: var(--deep); }
.service-card p { font-size: .94rem; flex: 1; }
.service-card span { color: var(--green); font-weight: 900; }

.seller { background: #fff; }
.seller-box { background: linear-gradient(135deg, var(--deep), #1d6b43); color: #fff; border-radius: 34px; padding: 50px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 34px; align-items: center; box-shadow: var(--shadow); }
.seller-box h2, .seller-box p, .seller-box .section-label { color: #fff; }
.seller-box .section-label { opacity: .8; }
.seller-steps { display: grid; gap: 14px; }
.seller-steps div { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.18); border-radius: 18px; padding: 18px; display: flex; align-items: center; gap: 16px; }
.seller-steps strong { color: #ffda8a; font-size: 1.3rem; }
.seller-steps span { font-weight: 900; }

.future { background: #fffaf0; }
.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.timeline-item { background: #fff; border-radius: var(--radius); padding: 28px; border: 1px solid rgba(242,159,61,.25); box-shadow: 0 14px 34px rgba(18,53,40,.06); }
.timeline-item span { color: var(--orange); font-weight: 900; }
.timeline-item h3 { color: var(--deep); margin: 8px 0 10px; }

.cta { padding: 80px 22px; background: linear-gradient(135deg, var(--green), #165c38); color: #fff; text-align: center; }
.cta-inner { max-width: 780px; margin: 0 auto; }
.cta h2 { margin: 0 0 10px; font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.25; }
.cta p { margin: 0 0 28px; opacity: .9; }
.cta .btn-primary { background: #fff; color: var(--green); box-shadow: 0 18px 36px rgba(0,0,0,.18); }

.site-footer { background: var(--deep); color: #d9eee4; padding: 42px 22px 24px; }
.footer-inner { max-width: 1180px; margin: 0 auto; display: flex; justify-content: space-between; gap: 24px; align-items: center; }
.footer-logo { width: 48px; height: 48px; margin-bottom: 10px; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; font-weight: 700; }
.footer-links a:hover { color: #fff; }
.copyright { max-width: 1180px; margin: 28px auto 0; color: rgba(217,238,228,.7); font-size: .86rem; }

@media (max-width: 900px) {
  .menu-button { display: block; }
  .global-nav { position: absolute; left: 16px; right: 16px; top: 76px; display: none; flex-direction: column; align-items: stretch; background: #fff; padding: 18px; border-radius: 20px; box-shadow: var(--shadow); }
  .global-nav.is-open { display: flex; }
  .hero-inner, .two-column, .seller-box { grid-template-columns: 1fr; }
  .hero-inner { min-height: auto; padding-top: 58px; }
  .floating-card { transform: none; left: 28px; right: 28px; max-width: none; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .header-inner { padding: 12px 16px; }
  .brand-text { font-size: 1rem; }
  .hero-inner, .section { padding-left: 16px; padding-right: 16px; }
  .hero-actions .btn { width: 100%; }
  .service-grid { grid-template-columns: 1fr; }
  .seller-box { padding: 30px 22px; border-radius: 24px; }
}