:root {
  --ink: #18231d;
  --muted: #66726b;
  --paper: #f5f3ec;
  --surface: #fffdf8;
  --green: #1e6446;
  --green-dark: #124531;
  --lime: #d8f28e;
  --line: #d9ded8;
  --shadow: 0 24px 70px rgba(19, 54, 38, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.container { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.narrow { width: min(760px, calc(100% - 48px)); }
.section { padding: 104px 0; }

.site-header {
  position: relative;
  z-index: 2;
  border-bottom: 1px solid rgba(24, 35, 29, 0.1);
  background: rgba(245, 243, 236, 0.94);
}
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; text-decoration: none; letter-spacing: 0.02em; }
.brand small { display: block; color: var(--muted); font-size: 9px; letter-spacing: 0.22em; line-height: 1.2; }
.brand-mark { display: grid; place-items: center; width: 36px; height: 36px; color: var(--surface); background: var(--green); border-radius: 50%; font-family: Georgia, serif; font-size: 20px; }
.test-label { padding: 5px 12px; border: 1px solid var(--line); border-radius: 99px; color: var(--muted); font-size: 12px; }

.hero { position: relative; overflow: hidden; padding: 96px 0 112px; }
.hero::before { content: ""; position: absolute; width: 540px; height: 540px; top: -270px; right: -130px; border: 1px solid rgba(30,100,70,.18); border-radius: 50%; box-shadow: 0 0 0 80px rgba(30,100,70,.035), 0 0 0 160px rgba(30,100,70,.025); }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr); align-items: center; gap: 86px; }
.eyebrow, .section-number, .card-kicker { margin: 0 0 20px; color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.hero h1 { max-width: 700px; margin: 0; font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(42px, 5.2vw, 72px); font-weight: 600; letter-spacing: -.035em; line-height: 1.25; }
.hero h1 span { position: relative; z-index: 0; white-space: nowrap; }
.hero h1 span::after { content: ""; position: absolute; z-index: -1; right: -4px; bottom: 7px; left: -4px; height: 14px; background: var(--lime); transform: rotate(-1deg); }
.hero-lead { max-width: 650px; margin: 30px 0 36px; color: #4f5d55; font-size: 17px; }
.cta-button { display: inline-flex; min-height: 58px; align-items: center; justify-content: space-between; gap: 36px; padding: 0 24px 0 28px; color: white; background: var(--green); border: 1px solid var(--green); border-radius: 4px; box-shadow: 0 10px 26px rgba(30,100,70,.18); font-weight: 700; text-decoration: none; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
.cta-button:hover { background: var(--green-dark); box-shadow: 0 14px 32px rgba(30,100,70,.25); transform: translateY(-2px); }
.cta-button:focus-visible { outline: 3px solid var(--lime); outline-offset: 4px; }
.cta-note { margin: 10px 0 0; color: var(--muted); font-size: 11px; }

.hero-card { padding: 40px; background: var(--surface); border: 1px solid rgba(30,100,70,.12); box-shadow: var(--shadow); transform: rotate(1deg); }
.hero-card h2 { margin: 0 0 28px; font-family: "Yu Mincho", serif; font-size: 24px; }
.hero-card ol { margin: 0; padding: 0; list-style: none; }
.hero-card li { display: grid; grid-template-columns: 42px 1fr; gap: 16px; padding: 20px 0; border-top: 1px solid var(--line); }
.hero-card li > span { color: var(--green); font-family: Georgia, serif; font-size: 20px; }
.hero-card li p { margin: 0; color: var(--muted); font-size: 14px; }
.hero-card li strong { display: block; margin-bottom: 2px; color: var(--ink); font-size: 15px; }

.intro { background: var(--surface); }
.intro h2, .section-heading h2, .final-cta h2 { margin: 0 0 28px; font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(32px, 4vw, 48px); font-weight: 600; line-height: 1.45; }
.intro > div > p:not(.section-number) { color: #4f5d55; font-size: 17px; }
.placeholder-note { margin-top: 36px; padding: 18px 20px; border-left: 3px solid var(--green); background: #f0f4ef; font-size: 13px !important; }

.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 50px; margin-bottom: 48px; }
.section-heading h2 { margin-bottom: 0; }
.section-heading > p { max-width: 390px; margin: 0 0 8px; color: var(--muted); }
.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid #cbd2cc; border-bottom: 1px solid #cbd2cc; }
.benefit-grid article { min-height: 300px; padding: 38px 34px; border-right: 1px solid #cbd2cc; }
.benefit-grid article:first-child { border-left: 1px solid #cbd2cc; }
.benefit-index { display: block; margin-bottom: 52px; color: var(--green); font-family: Georgia, serif; font-size: 32px; font-style: italic; }
.benefit-grid h3 { margin: 0 0 12px; font-size: 21px; }
.benefit-grid p { margin: 0; color: var(--muted); font-size: 14px; }

.final-cta { padding-top: 32px; }
.cta-panel { position: relative; overflow: hidden; padding: 72px; color: white; background: var(--green-dark); }
.cta-panel::after { content: ""; position: absolute; width: 340px; height: 340px; right: -80px; bottom: -180px; border: 64px solid rgba(216,242,142,.12); border-radius: 50%; }
.cta-panel .section-number { color: var(--lime); }
.cta-panel h2 { position: relative; z-index: 1; max-width: 780px; }
.cta-panel > p:not(.section-number) { position: relative; z-index: 1; color: #d7e3dc; }
.cta-button-light { position: relative; z-index: 1; margin-top: 18px; color: var(--green-dark); background: var(--lime); border-color: var(--lime); box-shadow: none; }
.cta-button-light:hover { color: white; background: var(--green); }

.site-footer { padding: 38px 0; color: #849087; background: #111a15; font-size: 11px; }
.footer-inner { display: flex; justify-content: space-between; gap: 30px; }
.footer-inner p { margin: 0; }
.footer-inner p:first-child { color: white; font-weight: 700; letter-spacing: .05em; }
.footer-inner span { color: #849087; font-weight: 400; }

@media (max-width: 820px) {
  .container, .narrow { width: min(100% - 36px, 680px); }
  .section { padding: 76px 0; }
  .hero { padding: 68px 0 82px; }
  .hero-grid { grid-template-columns: 1fr; gap: 54px; }
  .hero-card { transform: none; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 18px; }
  .benefit-grid { grid-template-columns: 1fr; }
  .benefit-grid article { min-height: auto; border-right: 1px solid #cbd2cc; border-bottom: 1px solid #cbd2cc; }
  .benefit-grid article:last-child { border-bottom: 0; }
  .benefit-index { margin-bottom: 22px; }
  .cta-panel { padding: 52px 38px; }
  .footer-inner { flex-direction: column; }
}

@media (max-width: 520px) {
  .header-inner { min-height: 66px; }
  .test-label { display: none; }
  .hero h1 { font-size: 38px; }
  .hero h1 span { white-space: normal; }
  .hero-lead { font-size: 15px; }
  .cta-button { width: 100%; }
  .hero-card { padding: 30px 24px; }
  .intro h2, .section-heading h2, .final-cta h2 { font-size: 30px; }
  .cta-panel { width: 100%; padding: 48px 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cta-button { transition: none; }
}