:root {
  color-scheme: dark;
  --background: #0c1422;
  --surface: #121e30;
  --text: #f3f5f9;
  --muted: #b1bbc9;
  --accent: #f4b86a;
  --line: #344153;
  font-family: "Segoe UI", Arial, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  color: var(--text);
  background: var(--background);
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; }
body { margin: 0; line-height: 1.8; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; }
a:hover { color: var(--accent); }
p, figure { margin: 0; }
.container { width: min(1160px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: absolute; z-index: 10; top: 8px; left: 8px; padding: 8px 16px; background: var(--surface); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: baseline; gap: 15px; font-weight: 700; font-size: 23px; letter-spacing: .04em; white-space: nowrap; }
nav { display: flex; gap: 36px; font-size: 14px; }
.hero { padding-top: 88px; }
.hero-layout { display: grid; grid-template-columns: 1.3fr 1fr; align-items: center; gap: 64px; }
.company-name { color: var(--accent); font-size: 14px; margin-bottom: 24px; }
h1 { font-size: clamp(36px, 4.5vw, 62px); font-weight: 600; line-height: 1.3; letter-spacing: -.035em; margin: 0 0 26px; }
.hero-description { color: var(--muted); font-size: 17px; line-height: 1.9; }
.button { display: inline-flex; align-items: center; gap: 36px; background: var(--text); color: var(--background); padding: 12px 23px; border-radius: 4px; font-size: 14px; font-weight: 600; margin-top: 34px; }
.button:hover { background: var(--accent); color: var(--background); }
.button span { font-size: 20px; }
.hero-image { position: relative; }
.hero-image img { display: block; width: 100%; height: auto; border-radius: 48% 48% 4px 4px; }
.hero-image figcaption { color: var(--muted); font-size: 12px; margin-top: 14px; text-align: right; }
.hero-bottom { margin-top: 66px; padding-bottom: 30px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; color: var(--muted); font-size: 12px; }
.hero-bottom a span { margin-left: 18px; }
.about { background: var(--surface); padding: 88px 0 80px; }
.about-intro { display: grid; grid-template-columns: 1fr 2fr; gap: 64px; }
h2 { font-size: 28px; line-height: 1.4; font-weight: 500; letter-spacing: -.025em; margin: 0; }
.intro { font-size: 32px; line-height: 1.6; margin: -6px 0 22px; }
.about-copy > p:last-child { max-width: 640px; font-size: 15px; color: var(--muted); }
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 46px; margin-top: 64px; }
.services article { border-top: 1px solid var(--line); padding-top: 24px; }
h3 { margin: 0 0 12px; font-size: 20px; font-weight: 500; }
.services p { font-size: 14px; color: var(--muted); max-width: 310px; }
.site-footer { padding: 76px 0 24px; }
.contact-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; }
.contact-heading h2 { font-size: 38px; }
.contact-heading p { color: var(--muted); font-size: 14px; }
.contact-details { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; font-style: normal; margin: 44px 0 58px; }
.contact-address { grid-column: 1 / -1; }
.contact-details > div > span { display: block; color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.contact-details a, .contact-details p { font-size: 16px; overflow-wrap: anywhere; }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); padding-top: 22px; color: var(--muted); font-size: 12px; }
@media (min-width: 1500px) { .hero { padding-top: 110px; } .hero-bottom { margin-top: 90px; } }
@media (max-width: 900px) {
  .container { width: calc(100% - 56px); }
  .hero { padding-top: 60px; }
  .hero-layout { gap: 32px; grid-template-columns: 1.2fr 1fr; }
  h1 { font-size: 40px; }
  .about-intro { gap: 32px; grid-template-columns: .7fr 2fr; }
  .services { gap: 26px; }
  .contact-details { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .container { width: calc(100% - 40px); }
  .header-inner { min-height: 78px; gap: 16px; }
  .brand { font-size: 20px; }
  nav { gap: 20px; font-size: 13px; }
  .hero { padding-top: 46px; }
  .hero-layout { grid-template-columns: 1fr; gap: 36px; }
  h1 { font-size: clamp(32px, 8.7vw, 48px); }
  .company-name { font-size: 12px; margin-bottom: 20px; }
  .hero-description { font-size: 15px; }
  .button { margin-top: 26px; }
  .hero-image { width: 82%; margin-left: auto; }
  .hero-bottom { margin-top: 32px; padding-bottom: 24px; }
  .about { padding: 48px 0; }
  .about-intro { grid-template-columns: 1fr; gap: 26px; }
  h2 { font-size: 24px; }
  .intro { font-size: 26px; margin-top: 0; }
  .services { grid-template-columns: 1fr; gap: 26px; margin-top: 36px; }
  .services article { padding-top: 18px; }
  .services p { max-width: none; }
  .site-footer { padding-top: 48px; }
  .contact-heading { display: block; }
  .contact-heading h2 { font-size: 30px; margin-bottom: 14px; }
  .contact-details { grid-template-columns: 1fr; gap: 24px; margin: 32px 0 38px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }