:root {
  --background: #f7f2e9;
  --surface: #fffaf2;
  --surface-deep: #eee2d0;
  --text: #463d35;
  --muted: #796d61;
  --accent: #9b8064;
  --accent-dark: #705a47;
  --border: #dfd1bf;
  --shadow: 0 18px 50px rgba(94, 73, 52, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei",
    "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  line-height: 1.75;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(155, 128, 100, 0.18);
  background: rgba(247, 242, 233, 0.96);
}

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand span {
  color: var(--accent);
  font-size: 0.78rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 0.92rem;
}

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

.hero {
  padding: 100px 0 76px;
}

.hero-card {
  position: relative;
  overflow: hidden;
  min-height: 430px;
  padding: 76px;
  border: 1px solid var(--border);
  border-radius: 32px;
  background: linear-gradient(135deg, #fffaf2 0%, #eee0ca 100%);
  box-shadow: var(--shadow);
}

.hero-card::after {
  content: "";
  position: absolute;
  right: -110px;
  bottom: -160px;
  width: 390px;
  height: 390px;
  border: 72px solid rgba(155, 128, 100, 0.12);
  border-radius: 50%;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 22px;
  font-size: clamp(2.6rem, 7vw, 5.4rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.hero-copy {
  max-width: 660px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.18rem);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid var(--accent-dark);
  border-radius: 999px;
  background: var(--accent-dark);
  color: #fffaf2;
  font-weight: 600;
}

.button.secondary {
  background: transparent;
  color: var(--accent-dark);
}

.section {
  padding: 54px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 30px;
}

.section-heading h2,
.article h1 {
  margin-bottom: 12px;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.section-heading p,
.article-intro {
  color: var(--muted);
}

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

.grid.features {
  grid-template-columns: repeat(5, 1fr);
}

.card {
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
}

.card-number {
  display: block;
  margin-bottom: 24px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

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

.card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.use-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  padding: 42px;
  border-radius: 24px;
  background: var(--surface-deep);
}

.use-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.mini-mark {
  flex: 0 0 auto;
  width: 124px;
  height: 124px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--surface);
  color: var(--accent-dark);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.contact-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.contact-item {
  padding: 25px;
  border-top: 1px solid var(--border);
}

.contact-item strong {
  display: block;
  margin-bottom: 5px;
  color: var(--accent-dark);
  font-size: 0.86rem;
}

.page-main {
  padding: 72px 0;
}

.article {
  max-width: 860px;
  margin: 0 auto;
  padding: 54px;
  border: 1px solid var(--border);
  border-radius: 26px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.article section {
  padding-top: 28px;
  border-top: 1px solid var(--border);
  margin-top: 28px;
}

.article h2 {
  margin-bottom: 12px;
  font-size: 1.18rem;
}

.article p,
.article li {
  color: var(--muted);
}

.article ul {
  padding-left: 1.25rem;
}

.article .contact-list {
  margin-top: 28px;
}

.site-footer {
  margin-top: 60px;
  padding: 38px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.86rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-record {
  margin: 4px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 22px;
}

.gongan-record {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.gongan-record img {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

.icp-record {
  white-space: nowrap;
}

@media (max-width: 900px) {
  .grid,
  .grid.features {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-card {
    padding: 52px;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .site-header {
    position: static;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 16px 0;
  }

  .nav-links {
    width: 100%;
    gap: 15px;
    overflow-x: auto;
    white-space: nowrap;
  }

  .hero {
    padding: 34px 0 26px;
  }

  .hero-card,
  .article {
    padding: 30px 24px;
    border-radius: 20px;
  }

  .section {
    padding: 34px 0;
  }

  .grid,
  .grid.features,
  .contact-list {
    grid-template-columns: 1fr;
  }

  .use-card,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .use-card {
    padding: 28px;
  }

  .site-footer {
    margin-top: 32px;
  }
}