:root {
  color-scheme: light;
  --ink: #182b42;
  --muted: #596779;
  --blue: #285eaf;
  --line: #dfe5ed;
  --paper: #ffffff;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 2rem; }
body { margin: 0; background: var(--paper); color: var(--ink); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: .25em; }
a:focus-visible, summary:focus-visible { outline: 3px solid #327de2; outline-offset: 6px; border-radius: 2px; }
p, h1, h2, h3 { margin: 0; }
.container { width: min(1080px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: absolute; top: 12px; left: 12px; z-index: 10; padding: 12px 18px; background: white; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 88px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 17px; font-weight: 650; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; flex-shrink: 0; background: var(--ink); color: white; font-size: 22px; font-weight: 600; border-radius: 3px; }
nav { display: flex; align-items: center; gap: 30px; }
nav a { color: var(--muted); font-size: 14px; text-decoration: none; padding-block: 14px; }
nav a:hover { color: var(--blue); }
.hero { background: #142b48; color: white; }
.hero-inner { padding-top: 67px; padding-bottom: 30px; }
.eyebrow { display: flex; align-items: center; gap: 12px; color: #c0d1e7; font-size: 14px; letter-spacing: .16em; }
.eyebrow::before { content: ""; width: 25px; height: 2px; background: #81aef1; }
h1 { margin-top: 25px; font-size: clamp(2.25rem, 4.6vw, 3.75rem); font-weight: 650; line-height: 1.4; letter-spacing: .025em; }
h1 span { display: block; }
.hero-description { margin-top: 22px; font-size: 18px; color: #d2ddef; line-height: 1.9; }
.hero-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
.hero-links a { display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; padding: 11px 17px; border: 1px solid #6c809b; border-radius: 3px; color: #edf3fc; font-size: 14px; line-height: 1.6; text-decoration: none; }
.hero-links a:hover { background: #24415f; border-color: #aac9f5; }
.hero-links a span { color: #a7c8f7; }
.hero-baseline { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 51px; padding-top: 24px; border-top: 1px solid #415570; color: #bdcce0; font-size: 14px; line-height: 1.8; }
.domain { letter-spacing: .04em; font-variant-numeric: tabular-nums; white-space: nowrap; }
.section { position: relative; display: grid; grid-template-columns: 235px minmax(0, 1fr); gap: 40px; padding-top: 60px; padding-bottom: 60px; }
.anchor-alias { position: absolute; top: 0; }
.section-label h2 { font-size: 25px; font-weight: 650; margin-top: 11px; line-height: 1.5; }
.section-number { font-size: 12px; letter-spacing: .13em; color: var(--blue); font-weight: 600; }
.section-caption { margin-top: 18px; max-width: 205px; font-size: 14px; line-height: 1.9; color: var(--muted); }
.section-intro { margin-bottom: 27px; color: var(--muted); font-size: 16px; line-height: 1.95; }
.section-footnote { margin-top: 22px; font-size: 14px; line-height: 1.9; color: var(--muted); }
.about-copy p { color: var(--muted); font-size: 16px; line-height: 1.95; }
.about-copy p + p { margin-top: 14px; }
.about-copy .lead { font-size: 20px; line-height: 1.8; color: var(--ink); font-weight: 500; margin-bottom: 15px; }
.services { border-top: 1px solid var(--line); padding-top: 47px; }
.service-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 30px; }
.service-card { padding-top: 17px; border-top: 1px solid var(--line); }
.service-card h3 { font-size: 18px; font-weight: 600; line-height: 1.6; margin-top: 8px; }
.service-card p { color: var(--muted); font-size: 15px; line-height: 1.95; margin-top: 10px; }
.tinted-band { background: #f3f6fa; border-block: 1px solid #e6ecf3; }
.service-detail { border-top: 1px solid #d5deea; }
.service-detail:last-of-type { border-bottom: 1px solid #d5deea; }
.service-detail summary { position: relative; list-style: none; padding: 23px 42px 23px 0; cursor: pointer; }
.service-detail summary::-webkit-details-marker { display: none; }
.detail-title { display: flex; align-items: baseline; gap: 16px; }
.detail-title strong { font-size: 19px; line-height: 1.65; font-weight: 600; }
.detail-preview { display: block; margin-top: 8px; padding-left: 33px; font-size: 14px; line-height: 1.9; color: var(--muted); }
.detail-toggle { position: absolute; top: 28px; right: 5px; width: 20px; height: 20px; color: var(--blue); }
.detail-toggle::before, .detail-toggle::after { content: ""; position: absolute; background: currentColor; border-radius: 1px; }
.detail-toggle::before { width: 14px; height: 2px; top: 9px; left: 3px; }
.detail-toggle::after { width: 2px; height: 14px; top: 3px; left: 9px; }
.service-detail[open] .detail-toggle::after { display: none; }
.service-detail summary:hover strong { color: var(--blue); }
.detail-body { padding: 0 0 25px 33px; }
.description-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 30px; padding: 0; margin: 0; list-style: none; }
.description-list strong { font-size: 15px; line-height: 1.8; font-weight: 600; }
.description-list p { color: var(--muted); margin-top: 5px; font-size: 14px; line-height: 1.9; }
.service-note { margin-top: 21px; color: var(--muted); font-size: 13px; line-height: 1.85; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tags span { padding: 3px 11px; font-size: 12px; line-height: 1.6; letter-spacing: .04em; border: 1px solid var(--line); border-radius: 3px; color: var(--blue); }
.service { display: grid; grid-template-columns: 36px 1fr; gap: 14px; padding-block: 23px; border-bottom: 1px solid var(--line); }
.service:first-child { padding-top: 0; }
.service:last-child { padding-bottom: 0; border-bottom: 0; }
.service-index { font-size: 14px; line-height: 2; color: var(--blue); font-variant-numeric: tabular-nums; }
.service h3 { font-size: 19px; font-weight: 600; line-height: 1.6; }
.service p { color: var(--muted); font-size: 16px; line-height: 1.9; margin-top: 8px; }
.service p.service-note { font-size: 13px; margin-top: 13px; }
.specialty-grid .service-card { border-top: 0; padding-top: 0; }
.specialty-grid h3 { margin-top: 0; }
.text-link { display: inline-block; margin-top: 16px; color: var(--blue); font-size: 14px; line-height: 1.9; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.text-link span { margin-left: 5px; }
.company-information { background: #f3f6fa; }
.information-inner { display: grid; grid-template-columns: 235px 1fr; gap: 40px; padding-block: 34px; }
.information-inner h2 { font-size: 20px; line-height: 1.8; font-weight: 600; }
dl { margin: 0; }
dl > div { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 16px; font-size: 15px; line-height: 1.9; }
dl > div + div { margin-top: 10px; }
dt { color: var(--muted); }
dd { margin: 0; overflow-wrap: anywhere; }
.license-number { white-space: nowrap; }
dd a { text-decoration: none; }
dd a:hover { text-decoration: underline; }
dd .text-link { margin-top: 0; font-size: inherit; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-block: 25px; font-size: 14px; color: var(--muted); line-height: 1.9; }
.icp-link { display: inline-block; text-decoration: none; padding-block: 6px; flex-shrink: 0; }
.icp-link:hover { color: var(--blue); text-decoration: underline; }

@media (max-width: 760px) {
  .container { width: calc(100% - 48px); }
  .header-inner { min-height: 75px; flex-wrap: wrap; gap: 0 18px; padding-block: 15px; }
  .brand { font-size: 16px; gap: 10px; }
  .brand-mark { width: 33px; height: 33px; font-size: 20px; }
  nav { gap: 20px; }
  .hero-inner { padding-top: 45px; padding-bottom: 26px; }
  h1 { font-size: clamp(1.5rem, 6.8vw, 2.5rem); line-height: 1.55; letter-spacing: .01em; margin-top: 22px; }
  .hero-description { font-size: 16px; margin-top: 17px; }
  .hero-baseline { flex-direction: column; align-items: flex-start; gap: 12px; margin-top: 33px; padding-top: 20px; }
  .section { grid-template-columns: 1fr; gap: 25px; padding-block: 38px; }
  .section-label h2 { font-size: 23px; margin-top: 7px; }
  .section-label h2 br { display: none; }
  .section-caption { max-width: none; margin-top: 10px; }
  .about-copy .lead { font-size: 19px; }
  .services { padding-top: 35px; }
  .service { grid-template-columns: 27px 1fr; gap: 12px; }
  .information-inner { grid-template-columns: 1fr; gap: 18px; padding-block: 28px; }
  dl > div { grid-template-columns: 84px minmax(0, 1fr); gap: 12px; font-size: 14px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 4px; padding-block: 22px; }
}

@media (max-width: 480px) {
  .header-inner { gap: 8px; }
  nav { width: 100%; padding-left: 0; justify-content: space-between; gap: 10px; }
  nav a { padding-block: 9px; font-size: 13px; }
  .hero-links { gap: 9px; margin-top: 23px; }
  .hero-links a { gap: 14px; padding: 10px 12px; font-size: 13px; }
  .service-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .service-card h3 { margin-top: 4px; }
  .description-list { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .detail-title { gap: 12px; }
  .detail-title strong { font-size: 18px; }
  .detail-preview { padding-left: 0; }
  .detail-body { padding-left: 0; }
  .specialty-grid .service-card + .service-card { border-top: 1px solid var(--line); padding-top: 24px; }
}

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