:root {
  --green: #19b84b;
  --green-dark: #0b7f31;
  --green-soft: #eaf9ef;
  --ink: #172019;
  --muted: #5f6c63;
  --line: #dce7df;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(25, 95, 48, 0.12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, rgba(25,184,75,.12), transparent 30%),
    linear-gradient(180deg, #f7fff9 0%, #ffffff 40%, #f6fbf7 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic",
    "YuGothic", "Noto Sans JP", sans-serif;
  line-height: 1.75;
}

a { color: inherit; }

.container {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(255,255,255,.84);
  border-bottom: 1px solid rgba(220,231,223,.85);
}

.nav {
  min-height: 72px;
  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: .01em;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  box-shadow: 0 5px 18px rgba(0,0,0,.12);
}

.nav-links {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links a {
  text-decoration: none;
  font-size: .94rem;
  color: var(--muted);
  font-weight: 700;
}

.nav-links a:hover { color: var(--green-dark); }

.hero {
  padding: 84px 0 54px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  align-items: center;
  gap: 56px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green-dark);
  font-size: .88rem;
  font-weight: 800;
}

h1 {
  margin: 20px 0 18px;
  font-size: clamp(2.5rem, 7vw, 5.4rem);
  line-height: 1.05;
  letter-spacing: -.045em;
}

.lead {
  margin: 0;
  font-size: clamp(1.05rem, 2.2vw, 1.28rem);
  color: var(--muted);
  max-width: 700px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 800;
  border: 1px solid transparent;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

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

.button.primary {
  background: var(--green);
  color: #fff;
  box-shadow: 0 12px 26px rgba(25,184,75,.25);
}

.button.secondary {
  background: #fff;
  border-color: var(--line);
  color: var(--ink);
}

.button.disabled {
  background: #edf2ee;
  color: #758078;
  cursor: default;
  pointer-events: none;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.icon-card {
  width: min(430px, 90vw);
  padding: 18px;
  border-radius: 34px;
  background: rgba(255,255,255,.78);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,.9);
  transform: rotate(2deg);
}

.icon-card img {
  width: 100%;
  display: block;
  border-radius: 28px;
}

.section {
  padding: 54px 0;
}

.section-title {
  margin: 0 0 10px;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -.025em;
}

.section-intro {
  margin: 0 0 28px;
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  padding: 24px;
  background: rgba(255,255,255,.92);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 10px 30px rgba(22,72,38,.06);
}

.card .icon {
  font-size: 1.8rem;
  margin-bottom: 10px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.08rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: .95rem;
}

.info-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.panel {
  padding: 28px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: #fff;
}

.panel h2, .panel h3 { margin-top: 0; }

.link-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.link-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--green-soft);
  color: var(--green-dark);
  text-decoration: none;
  font-weight: 800;
}

.page-hero {
  padding: 70px 0 34px;
}

.page-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: clamp(24px, 5vw, 46px);
  box-shadow: var(--shadow);
}

.page-card h1 {
  font-size: clamp(2.1rem, 5vw, 3.5rem);
  margin-top: 0;
}

.page-card h2 {
  margin-top: 2.2em;
  font-size: 1.3rem;
}

.page-card ul {
  padding-left: 1.25em;
}

.note {
  margin-top: 24px;
  padding: 16px 18px;
  border-radius: 14px;
  background: var(--green-soft);
  color: var(--green-dark);
}

footer {
  margin-top: 40px;
  padding: 34px 0 46px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

@media (max-width: 820px) {
  .hero-grid,
  .info-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 54px;
  }

  .hero-visual {
    order: -1;
  }

  .icon-card {
    width: min(320px, 76vw);
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .nav {
    align-items: flex-start;
    padding: 14px 0;
  }

  .nav-links {
    justify-content: flex-end;
    gap: 12px;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, 1080px);
  }

  .nav-links a:nth-child(-n+2) {
    display: none;
  }

  .hero {
    padding-bottom: 32px;
  }

  .section {
    padding: 38px 0;
  }

  .button {
    width: 100%;
  }
}