:root {
  color-scheme: light;
  --ink: #18211d;
  --muted: #5e6b65;
  --line: #d9e2dc;
  --paper: #ffffff;
  --surface: #f2f7f4;
  --accent: #19734f;
  --accent-dark: #10573b;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid rgba(217, 226, 220, 0.9);
  background: rgba(255, 255, 255, 0.96);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  min-height: 74px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 6px;
  background: var(--accent);
  color: #ffffff;
  font-size: 13px;
  font-weight: 800;
}

.brand-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong {
  overflow: hidden;
  font-size: 15px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand-copy small {
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--accent);
}

.hero {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.hero-inner {
  padding: 96px 0 58px;
}

.eyebrow,
.section-index {
  margin: 0;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
}

h1 {
  max-width: 920px;
  margin: 18px 0 0;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.12;
  letter-spacing: 0;
}

.lead {
  max-width: 760px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.8;
}

.identity-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 1fr;
  margin: 58px 0 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.identity-grid div {
  min-width: 0;
  padding: 22px 24px 22px 0;
}

.identity-grid div + div {
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

.identity-grid dt {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
}

.identity-grid dd {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
}

.section {
  padding: 84px 0;
}

.section-muted {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.section-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.5fr;
  gap: 72px;
}

.section-heading h2,
.section-title-row h2,
.notice h2 {
  margin: 12px 0 0;
  font-size: 32px;
  letter-spacing: 0;
}

.section-content {
  max-width: 720px;
}

.section-content p,
.notice > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.section-content p + p {
  margin-top: 18px;
}

.section-title-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
}

.section-title-row > p {
  max-width: 380px;
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  text-align: right;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 36px;
}

.service-grid article {
  min-height: 220px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.service-grid span {
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
}

.service-grid h3 {
  margin: 38px 0 12px;
  font-size: 21px;
}

.service-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.notice {
  max-width: 1120px;
  padding-right: min(20vw, 260px);
}

.notice > p:last-child {
  margin-top: 22px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: #dce6e0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 34px 0;
  font-size: 13px;
  text-align: center;
}

.footer-inner p {
  margin: 0;
}

.footer-company {
  margin-bottom: 8px !important;
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
}

.icp-number {
  color: #dce6e0;
}

.footer-inner a {
  color: #dce6e0;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-inner a:hover,
.footer-inner a:focus-visible {
  color: #ffffff;
}

@media (max-width: 860px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding: 14px 0;
  }

  .nav-links {
    gap: 20px;
  }

  .hero-inner {
    padding-top: 64px;
  }

  .identity-grid,
  .section-layout,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .identity-grid div,
  .identity-grid div + div {
    padding: 18px 0;
    border-left: 0;
  }

  .identity-grid div + div {
    border-top: 1px solid var(--line);
  }

  .section-layout {
    gap: 34px;
  }

  .notice {
    padding-right: 0;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .site-header {
    position: static;
  }

  .brand-copy strong {
    white-space: normal;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  h1 {
    font-size: 40px;
  }

  .lead {
    font-size: 17px;
  }

  .section {
    padding: 64px 0;
  }

  .section-title-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-title-row > p {
    text-align: left;
  }
}