:root {
  color-scheme: light;
  --ink: #172331;
  --muted: #607080;
  --blue: #225bea;
  --line: #e0e6ed;
  --soft: #f5f8fc;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 2rem; }
body { margin: 0; background: #fff; color: var(--ink); font-family: var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid var(--blue); outline-offset: 6px; border-radius: 2px; }
::selection { background: #dce7ff; color: #163982; }
.container { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: absolute; z-index: 10; top: 8px; left: 16px; padding: 12px 20px; background: var(--ink); color: white; transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 100px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 13px; font-weight: 750; font-size: 23px; letter-spacing: .08em; white-space: nowrap; }
.brand-mark { display: inline-flex; gap: 5px; width: 33px; height: 30px; align-items: center; transform: skewX(-14deg); }
.brand-mark span { width: 10px; height: 28px; background: var(--blue); }
.brand-mark span:last-child { height: 18px; align-self: end; margin-bottom: 1px; }
nav { display: flex; gap: 38px; font-size: 14px; font-weight: 550; }
nav a { padding-block: 14px; }
nav a:hover { color: var(--blue); }
nav span { padding-left: 9px; }
.hero { padding-top: 86px; }
.eyebrow { display: flex; gap: 13px; align-items: center; font-size: 14px; color: #536576; margin: 0 0 37px; letter-spacing: .035em; line-height: 1.8; }
.eyebrow-line { width: 27px; height: 2px; flex: 0 0 auto; background: var(--blue); }
.hero-grid { display: grid; grid-template-columns: 1.65fr 1fr; gap: 70px; align-items: end; }
h1 { font-size: clamp(54px, 6.15vw, 88px); line-height: 1.22; letter-spacing: -.05em; font-weight: 700; margin: 0; }
.hero-second-line { display: block; }
.blue-period { color: var(--blue); }
.primary-link { display: inline-flex; justify-content: space-between; align-items: center; gap: 48px; background: var(--blue); color: #fff; padding: 19px 24px; margin-top: 43px; font-size: 15px; font-weight: 550; transition: background .18s, transform .18s; }
.primary-link:hover { background: #1949c7; transform: translateY(-2px); }
.primary-link span { font-size: 22px; line-height: 1; }
.hero-note { padding: 18px 0 3px; max-width: 340px; }
.note-rule { width: 44px; height: 3px; background: var(--ink); display: block; margin-bottom: 23px; }
.hero-note > p:first-of-type { margin: 0 0 17px; font-size: 25px; font-weight: 550; line-height: 1.6; letter-spacing: .015em; }
.hero-description { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.95; }
.hero-bottom { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); margin-top: 73px; padding: 20px 0 26px; color: #74808c; font-size: 13px; }
.down-arrow { margin-left: 20px; color: var(--ink); font-size: 20px; }
.services { background: var(--soft); padding: 80px 0 82px; }
.section-heading { display: flex; justify-content: space-between; gap: 44px; align-items: start; margin-bottom: 49px; }
.section-label { margin: 5px 0 0; color: var(--blue); font-size: 14px; line-height: 1.5; font-weight: 550; letter-spacing: .04em; }
h2 { font-size: 35px; line-height: 1.5; letter-spacing: -.025em; font-weight: 600; margin: 0; }
.service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.service-item { border-top: 1px solid #cdd7e3; padding: 28px 32px 0; }
.service-item:first-child { padding-left: 0; }
.service-item:last-child { padding-right: 0; }
.service-item + .service-item { border-left: 1px solid #dce3ed; }
.service-number { display: block; color: var(--blue); font-size: 14px; margin-bottom: 35px; font-variant-numeric: tabular-nums; }
.service-item h3 { font-size: 25px; font-weight: 600; margin: 0 0 18px; }
.service-item p { color: var(--muted); font-size: 16px; line-height: 1.9; margin: 0; }
.service-detail { display: block; margin-top: 32px; font-size: 13px; line-height: 1.7; color: #657484; }
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; padding-block: 92px; }
.about h2 { font-size: 43px; margin-top: 34px; line-height: 1.48; }
.about-copy { padding-top: 1px; }
.about-copy h3 { font-size: 18px; line-height: 1.8; font-weight: 600; margin: 0 0 20px; }
.about-copy p { color: var(--muted); font-size: 16px; line-height: 2; margin: 0 0 16px; }
.about-signature { display: block; margin-top: 32px; padding-top: 21px; border-top: 1px solid var(--line); color: var(--blue); font-size: 14px; }
.site-footer { border-top: 1px solid var(--line); padding: 33px 0; }
.footer-inner { display: grid; grid-template-columns: 1fr 2fr 1fr; gap: 25px; align-items: center; }
.footer-brand { font-weight: 600; font-size: 17px; letter-spacing: .08em; }
.footer-brand span { margin-left: 15px; color: var(--blue); }
.legal { text-align: center; font-size: 12px; line-height: 1.9; color: #687887; }
.legal p { margin: 0 0 3px; }
.legal a { display: inline-block; padding: 4px 0; font-size: 13px; }
.legal a:hover { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.footer-note { text-align: right; font-size: 12px; color: #778591; }
.mobile-break { display: none; }
@media (max-width: 1000px) {
  .container { width: calc(100% - 64px); }
  .hero-grid { gap: 38px; grid-template-columns: 1.55fr 1fr; }
  h1 { font-size: clamp(48px, 6.1vw, 68px); }
  .hero-note > p:first-of-type { font-size: 22px; }
  .hero { padding-top: 64px; }
  .section-heading h2 { font-size: 29px; }
  .service-item { padding-inline: 22px; }
  .service-detail { font-size: 12px; }
  .about { gap: 45px; }
  .footer-note { display: none; }
  .footer-inner { grid-template-columns: 1fr 2fr; }
  .legal { text-align: right; }
}
@media (max-width: 700px) {
  .container { width: calc(100% - 40px); }
  .header-inner { min-height: 79px; gap: 12px; }
  .brand { font-size: 19px; gap: 8px; letter-spacing: .04em; }
  .brand-mark { transform: skewX(-14deg) scale(.8); transform-origin: left center; width: 26px; }
  nav { gap: 17px; font-size: 13px; }
  nav span { display: none; }
  .hero { padding-top: 43px; }
  .eyebrow { font-size: 12px; letter-spacing: 0; gap: 8px; margin-bottom: 30px; }
  .eyebrow-line { width: 16px; }
  .hero-grid { display: block; }
  h1 { font-size: clamp(39px, 10.8vw, 65px); line-height: 1.3; letter-spacing: -.05em; }
  .primary-link { margin-top: 29px; padding: 16px 20px; font-size: 14px; gap: 36px; }
  .hero-note { max-width: 100%; display: grid; grid-template-columns: 1fr; gap: 15px; margin-top: 46px; padding: 0; }
  .note-rule { display: none; }
  .hero-note > p:first-of-type { font-size: 22px; margin: 0; line-height: 1.6; }
  .hero-note br { display: none; }
  .hero-description { font-size: 16px; line-height: 1.85; }
  .hero-bottom { margin-top: 35px; padding-bottom: 22px; font-size: 12px; }
  .hero-bottom > span:last-child { display: none; }
  .services { padding-block: 48px; }
  .section-heading { display: block; margin-bottom: 29px; }
  .section-label { font-size: 13px; }
  .section-heading h2 { margin-top: 21px; font-size: 27px; }
  .mobile-break { display: block; }
  .service-grid { display: block; }
  .service-item, .service-item:first-child, .service-item:last-child { padding: 26px 0; }
  .service-item:last-child { padding-bottom: 0; }
  .service-item + .service-item { border-left: 0; }
  .service-number { margin-bottom: 15px; }
  .service-item h3 { font-size: 24px; margin-bottom: 12px; }
  .service-detail { margin-top: 19px; font-size: 13px; }
  .about { display: block; padding-block: 51px; }
  .about h2 { margin-top: 20px; font-size: 34px; }
  .about-copy { margin-top: 29px; }
  .about-copy h3 { font-size: 18px; }
  .about-copy p { line-height: 1.9; }
  .about-signature { margin-top: 25px; }
  .site-footer { padding: 28px 0; }
  .footer-inner { display: block; }
  .footer-brand { display: block; text-align: center; margin-bottom: 17px; }
  .legal { text-align: center; }
}
@media (max-width: 359px) {
  .header-inner { flex-wrap: wrap; padding-block: 17px; }
  nav { width: 100%; justify-content: space-between; }
  .eyebrow { align-items: start; }
  .eyebrow-line { margin-top: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .primary-link { transition: none; }
}