:root {
  color-scheme: light;
  --ink: #17201c;
  --muted: #5d6a63;
  --line: #dbe3de;
  --brand: #12372f;
  --accent: #f5c542;
  --soft: #f4f7f5;
  --paper: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  line-height: 1.7;
}

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

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
}

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

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand img {
  width: 168px;
  height: 48px;
  display: block;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  padding: 8px 12px;
  color: var(--muted);
  border-radius: 6px;
  font-size: 15px;
}

.nav a[aria-current="page"],
.nav a:hover {
  color: var(--brand);
  background: var(--soft);
}

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

.hero .section {
  min-height: 420px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 48px;
  align-items: center;
  padding: 64px 0;
}

.hero-content {
  max-width: 760px;
}

.hero-mark {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.hero-mark img {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
  margin-bottom: 24px;
}

.hero-mark dl {
  display: grid;
  gap: 12px;
  margin: 0;
}

.hero-mark div {
  display: grid;
  gap: 2px;
}

.hero-mark dt {
  color: var(--muted);
  font-size: 13px;
}

.hero-mark dd {
  margin: 0;
  font-weight: 700;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--brand);
  font-size: 15px;
  font-weight: 700;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.15;
  letter-spacing: 0;
}

.hero p {
  max-width: 660px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 20px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 9px 18px;
  border-radius: 6px;
  border: 1px solid var(--line);
  font-weight: 700;
}

.button.primary {
  color: #fff;
  background: var(--brand);
  border-color: var(--brand);
}

.button.secondary {
  color: var(--brand);
  background: #fff;
}

.section {
  padding: 64px 0;
}

.section.compact {
  padding-top: 44px;
}

.section-title {
  margin-bottom: 28px;
}

.section-title h2 {
  margin-bottom: 8px;
  font-size: 30px;
  line-height: 1.25;
}

.section-title p {
  max-width: 720px;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  min-height: 148px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.card h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

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

.band {
  background: var(--soft);
}

.info-list {
  display: grid;
  gap: 14px;
  margin: 0;
}

.info-row {
  display: grid;
  grid-template-columns: 138px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.info-row dt {
  color: var(--muted);
  font-weight: 700;
}

.info-row dd {
  margin: 0;
}

.page-title {
  background: var(--soft);
  border-bottom: 1px solid var(--line);
}

.page-title .section {
  padding: 52px 0;
}

.page-title h1 {
  margin-bottom: 10px;
  color: var(--brand);
  font-size: 40px;
}

.page-title p {
  margin-bottom: 0;
  color: var(--muted);
}

.service-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.service-list li {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-weight: 700;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: start;
}

.notice {
  padding: 22px;
  border-left: 4px solid var(--accent);
  background: var(--soft);
}

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

.filing-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
  background: var(--soft);
}

.filing-box {
  width: min(560px, 100%);
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  text-align: center;
}

.filing-box img {
  width: 168px;
  height: 48px;
  margin-bottom: 26px;
}

.filing-box h1 {
  margin-bottom: 14px;
  color: var(--brand);
  font-size: 32px;
}

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

.footer-inner {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

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

@media (max-width: 820px) {
  .header-inner,
  .footer-inner,
  .contact-layout {
    display: block;
  }

  .header-inner {
    padding: 16px 0;
  }

  .brand {
    margin-bottom: 14px;
  }

  .nav {
    justify-content: flex-start;
  }

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

  .hero .section {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 48px 0;
  }

  .hero p {
    font-size: 18px;
  }

  .info-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .footer-inner {
    padding: 22px 0;
  }

  .footer-links {
    justify-content: flex-start;
    margin-top: 8px;
  }
}

@media (max-width: 520px) {
  .header-inner,
  .section,
  .footer-inner {
    width: min(100% - 28px, 1120px);
  }

  .brand {
    align-items: flex-start;
  }

  .brand img {
    width: 140px;
    height: 40px;
  }

  .brand-name {
    white-space: normal;
    font-size: 16px;
  }

  .nav a {
    padding: 7px 9px;
  }

  h1 {
    font-size: 34px;
  }

  .page-title h1 {
    font-size: 32px;
  }

  .section {
    padding: 46px 0;
  }

  .filing-box {
    padding: 30px 22px;
  }
}