:root {
  --bg: #f4f7f2;
  --surface: #ffffff;
  --surface-soft: #eef4ec;
  --ink: #1e2a23;
  --ink-soft: #46554c;
  --muted: #6b7a71;
  --green: #3c7a55;
  --green-deep: #2c5c3f;
  --green-soft: #dfeee2;
  --line: #dde6da;
  --radius-lg: 22px;
  --radius-md: 14px;
  --shadow: 0 14px 34px rgba(31, 58, 42, 0.08);
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  max-width: 100%;
}

a {
  color: var(--green-deep);
}

a:hover {
  color: var(--green);
}

:focus-visible {
  outline: 3px solid #7cb08f;
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 20;
  padding: 10px 16px;
  background: var(--green-deep);
  color: #fff;
  border-radius: 0 0 10px 10px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
  color: #fff;
}

.wrap {
  width: min(100% - 40px, var(--max-width));
  margin: 0 auto;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(244, 247, 242, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--green-soft);
  color: var(--green-deep);
  flex: 0 0 auto;
}

.brand__name {
  display: block;
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.brand__tagline {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.4;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  font: inherit;
  font-size: 0.92rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  display: block;
  padding: 8px 14px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.site-nav a:hover {
  background: var(--surface-soft);
  color: var(--green-deep);
}

.site-nav a[aria-current="page"] {
  background: var(--green-soft);
  color: var(--green-deep);
  font-weight: 600;
}

.site-nav .nav-cta {
  background: var(--green);
  color: #fff;
  font-weight: 600;
}

.site-nav .nav-cta:hover {
  background: var(--green-deep);
  color: #fff;
}

/* ---------- sections ---------- */

section {
  padding: 68px 0;
}

.section--soft {
  background: var(--surface-soft);
}

.eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green-deep);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}

h1,
h2,
h3 {
  line-height: 1.35;
  color: var(--ink);
  font-weight: 700;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(1.9rem, 4.4vw, 2.85rem);
  letter-spacing: 0.01em;
}

h2 {
  margin: 0 0 18px;
  font-size: clamp(1.45rem, 3vw, 2rem);
}

h3 {
  margin: 0 0 10px;
  font-size: 1.18rem;
}

p {
  margin: 0 0 16px;
}

.lead {
  font-size: 1.06rem;
  color: var(--ink-soft);
  max-width: 34em;
}

.section-head {
  max-width: 40em;
  margin-bottom: 34px;
}

.section-head p {
  color: var(--ink-soft);
  margin-bottom: 0;
}

/* ---------- hero ---------- */

.hero {
  padding: 76px 0 72px;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  align-items: center;
  gap: 48px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.button--primary {
  background: var(--green);
  color: #fff;
  box-shadow: 0 10px 22px rgba(44, 92, 63, 0.22);
}

.button--primary:hover {
  background: var(--green-deep);
  color: #fff;
  transform: translateY(-1px);
}

.button--ghost {
  background: var(--surface);
  color: var(--green-deep);
  border-color: var(--line);
}

.button--ghost:hover {
  background: var(--surface-soft);
  color: var(--green-deep);
}

.hero__art {
  position: relative;
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero__art svg {
  display: block;
  width: 100%;
  height: auto;
}

.hero__art-note {
  margin: 18px 0 0;
  font-size: 0.92rem;
  color: var(--muted);
}

/* ---------- cards ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.card p {
  color: var(--ink-soft);
}

.card ul {
  margin: 0 0 20px;
  padding-left: 1.1em;
  color: var(--ink-soft);
}

.card li {
  margin-bottom: 8px;
}

.card__icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  border-radius: 14px;
  background: var(--green-soft);
  color: var(--green-deep);
}

.card__link {
  margin-top: auto;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  align-self: flex-start;
  padding-bottom: 2px;
}

/* ---------- lists ---------- */

.checklist {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px 32px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.checklist li {
  position: relative;
  padding-left: 32px;
  color: var(--ink-soft);
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.62em;
  width: 12px;
  height: 7px;
  border-left: 2px solid var(--green);
  border-bottom: 2px solid var(--green);
  transform: rotate(-45deg);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  position: relative;
  padding: 26px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  counter-increment: step;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  margin-bottom: 10px;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--green);
  font-weight: 700;
}

.steps h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.steps p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

/* ---------- faq ---------- */

.faq {
  display: grid;
  gap: 12px;
  margin: 0;
}

.faq details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 6px 22px;
}

.faq summary {
  cursor: pointer;
  padding: 14px 0;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "＋";
  float: right;
  color: var(--green);
  font-weight: 700;
}

.faq details[open] summary::after {
  content: "－";
}

.faq .faq__body {
  padding-bottom: 6px;
  color: var(--ink-soft);
}

.faq .faq__body p:last-child {
  margin-bottom: 12px;
}

/* ---------- contact ---------- */

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 40px;
  align-items: center;
}

.contact__panel {
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.mail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.mail a {
  font-size: 1.22rem;
  font-weight: 700;
  word-break: break-all;
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: #fdf1d8;
  border: 1px solid #f0dcb0;
  color: #8a6016;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.notice {
  padding: 14px 16px;
  background: #fdf9ee;
  border: 1px dashed #e8d6a8;
  border-radius: var(--radius-md);
  color: #6f5a24;
  font-size: 0.9rem;
  margin: 0;
}

/* ---------- page hero ---------- */

.page-hero {
  padding: 60px 0 48px;
  border-bottom: 1px solid var(--line);
}

.page-hero .lead {
  margin-bottom: 0;
}

.breadcrumb {
  margin: 0 0 18px;
  font-size: 0.88rem;
  color: var(--muted);
}

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

.breadcrumb a:hover {
  color: var(--green-deep);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 44px;
  align-items: start;
}

.panel {
  padding: 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.panel h3 {
  margin-bottom: 14px;
}

.panel ul {
  margin: 0;
  padding-left: 1.1em;
  color: var(--ink-soft);
}

.panel li {
  margin-bottom: 10px;
}

.panel li:last-child {
  margin-bottom: 0;
}

/* ---------- footer ---------- */

.site-footer {
  padding: 46px 0 40px;
  background: #26382d;
  color: #d5e3d8;
}

.site-footer a {
  color: #eaf3ec;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

.site-footer h2 {
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 12px;
}

.site-footer p {
  margin-bottom: 10px;
  font-size: 0.94rem;
  color: #c4d6c8;
}

.site-footer nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer nav li {
  margin-bottom: 8px;
  font-size: 0.94rem;
}

.site-footer nav a {
  text-decoration: none;
}

.site-footer nav a:hover {
  text-decoration: underline;
}

.site-footer__notice {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(213, 227, 216, 0.25);
  font-size: 0.86rem;
  color: #b6cbbb;
}

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .hero__grid,
  .contact,
  .split,
  .site-footer__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__grid {
    gap: 34px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    left: 20px;
    right: 20px;
    top: calc(100% + 8px);
    padding: 10px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    display: none;
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-nav a {
    padding: 12px 14px;
    font-size: 1rem;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  section {
    padding: 52px 0;
  }

  .hero {
    padding: 52px 0;
  }

  .hero__art,
  .contact__panel,
  .card,
  .panel {
    padding: 24px;
  }

  .button {
    width: 100%;
    justify-content: center;
  }

  .wrap {
    width: min(100% - 32px, var(--max-width));
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .button {
    transition: none;
  }
}