:root {
  color-scheme: light;
  --blue: #0756c7;
  --blue-strong: #063f98;
  --blue-light: #eaf3ff;
  --ink: #101828;
  --muted: #536078;
  --line: #dce4ef;
  --surface: #f5f8fc;
  --white: #ffffff;
  --dark: #071a37;
  --container: 1160px;
  --shadow: 0 22px 60px rgba(17, 51, 94, 0.12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

img { display: block; max-width: 100%; }

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 8px 14px;
  color: var(--white);
  background: var(--blue);
  border-radius: 8px;
  transform: translateY(-150%);
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(220, 228, 239, 0.9);
  backdrop-filter: blur(16px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  line-height: 1.2;
}

.brand strong { display: block; font-size: 1.08rem; letter-spacing: 0.08em; }
.brand small { display: block; margin-top: 4px; color: #78859a; font-size: 0.68rem; letter-spacing: 0.16em; }

.site-nav { display: flex; align-items: center; gap: 30px; color: #344054; font-size: 0.94rem; }
.site-nav a { transition: color 160ms ease; }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--blue); }
.nav-contact { padding: 9px 18px; color: var(--white) !important; background: var(--blue); border-radius: 8px; }
.nav-contact:hover { background: var(--blue-strong); }

.hero {
  position: relative;
  overflow: hidden;
  padding: 112px 0 106px;
  background:
    radial-gradient(circle at 83% 18%, rgba(47, 135, 255, 0.14), transparent 34%),
    linear-gradient(180deg, #f7faff 0%, #fff 84%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(7, 86, 199, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7, 86, 199, 0.08) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(to right, transparent, #000 62%, transparent);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  align-items: center;
  gap: 80px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.7rem, 5vw, 4.5rem);
  line-height: 1.16;
  letter-spacing: -0.055em;
}

.hero h1 span { color: var(--blue); }

.hero-summary {
  max-width: 680px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.9;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: 9px;
  font-weight: 700;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--white); background: var(--blue); box-shadow: 0 10px 24px rgba(7, 86, 199, 0.22); }
.button-primary:hover { background: var(--blue-strong); }
.button-secondary { color: var(--ink); background: var(--white); border-color: var(--line); }
.button-secondary:hover { box-shadow: 0 8px 20px rgba(17, 51, 94, 0.09); }

.hero-points { display: flex; flex-wrap: wrap; gap: 22px; margin: 30px 0 0; padding: 0; list-style: none; color: #44516a; font-size: 0.91rem; }
.hero-points li::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 9px; background: var(--blue); border-radius: 2px; transform: rotate(45deg); }

.delivery-panel {
  position: relative;
  padding: 26px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(188, 207, 232, 0.8);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.delivery-panel::before {
  content: "";
  position: absolute;
  inset: 16px -16px -16px 16px;
  z-index: -1;
  background: #dcecff;
  border-radius: 18px;
}

.panel-topline { display: flex; justify-content: space-between; gap: 12px; padding-bottom: 18px; border-bottom: 1px solid var(--line); font-size: 0.82rem; font-weight: 700; }
.status { color: #177646; }
.status i { display: inline-block; width: 7px; height: 7px; margin-right: 5px; background: #22a461; border-radius: 50%; box-shadow: 0 0 0 4px rgba(34, 164, 97, 0.12); }

.delivery-list { margin: 0; padding: 12px 0; list-style: none; }
.delivery-list li { display: grid; grid-template-columns: 42px 1fr; align-items: center; gap: 14px; padding: 16px 0; border-bottom: 1px solid #edf1f6; }
.delivery-list li:last-child { border-bottom: 0; }
.delivery-list > li > span { width: 38px; height: 38px; display: grid; place-items: center; color: var(--blue); background: var(--blue-light); border-radius: 9px; font-size: 0.75rem; font-weight: 800; }
.delivery-list strong, .delivery-list small { display: block; }
.delivery-list strong { font-size: 0.96rem; }
.delivery-list small { margin-top: 2px; color: #758198; font-size: 0.78rem; }
.panel-footer { display: flex; justify-content: space-between; gap: 8px; padding-top: 16px; border-top: 1px solid var(--line); color: #8490a4; font-size: 0.64rem; font-weight: 800; letter-spacing: 0.08em; }

.section { padding: 104px 0; }
.section-heading { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr); gap: 70px; align-items: end; margin-bottom: 48px; }
.section-heading h2, .product-copy h2, .about-grid h2, .contact h2, .capability-grid h2 { margin: 0; font-size: clamp(2rem, 3.5vw, 3.15rem); line-height: 1.28; letter-spacing: -0.045em; }
.section-heading > p { margin: 0; color: var(--muted); }

.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.service-card { position: relative; min-height: 330px; padding: 34px; overflow: hidden; background: var(--white); border: 1px solid var(--line); border-radius: 14px; transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease; }
.service-card:hover { transform: translateY(-4px); border-color: #a8c7ef; box-shadow: 0 18px 42px rgba(26, 66, 117, 0.1); }
.service-card-featured { background: linear-gradient(145deg, #0756c7, #063a8d); border-color: transparent; color: var(--white); }
.service-number { display: block; color: var(--blue); font-size: 0.75rem; font-weight: 800; }
.service-card-featured .service-number { color: #a9d1ff; }
.service-card h3 { margin: 54px 0 10px; font-size: 1.55rem; }
.service-card p { margin: 0; color: var(--muted); }
.service-card-featured p { color: #d5e7ff; }
.service-card ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 26px 0 0; padding: 0; list-style: none; }
.service-card li { padding: 5px 10px; color: #46546b; background: var(--surface); border-radius: 5px; font-size: 0.78rem; }
.service-card-featured li { color: #e8f3ff; background: rgba(255, 255, 255, 0.12); }

.section-dark { color: var(--white); background: var(--dark); }
.capability-grid { display: grid; grid-template-columns: minmax(300px, 0.82fr) minmax(0, 1.18fr); gap: 100px; }
.eyebrow-light { color: #79b7ff; }
.capability-intro { max-width: 470px; margin: 28px 0 0; color: #a9b8cd; }
.capability-list { border-top: 1px solid rgba(255, 255, 255, 0.18); }
.capability-list article { display: grid; grid-template-columns: 48px 1fr; gap: 20px; padding: 28px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.18); }
.capability-list span { color: #79b7ff; font-size: 0.78rem; font-weight: 800; }
.capability-list h3 { margin: 0; font-size: 1.22rem; }
.capability-list p { margin: 6px 0 0; color: #a9b8cd; }

.product-grid { display: grid; grid-template-columns: minmax(360px, 0.92fr) minmax(0, 1.08fr); gap: 100px; align-items: center; }
.product-card { padding: 18px; background: #eff5fd; border: 1px solid #ccdaed; border-radius: 18px; box-shadow: var(--shadow); transform: rotate(-1.5deg); }
.product-toolbar { display: flex; align-items: center; gap: 7px; padding: 2px 2px 16px; color: #64738a; font-size: 0.72rem; }
.product-toolbar i { width: 8px; height: 8px; background: #aec1da; border-radius: 50%; }
.product-toolbar span { margin-left: auto; }
.product-body { position: relative; min-height: 320px; padding: 34px; overflow: hidden; background: linear-gradient(145deg, #fff, #f8fbff); border-radius: 11px; }
.product-body::after { content: ""; position: absolute; right: -45px; bottom: -60px; width: 200px; height: 200px; background: var(--blue-light); border-radius: 50%; }
.product-chip { width: 88px; height: 88px; display: grid; place-items: center; color: var(--white); background: var(--blue); border: 8px solid #dfeeff; border-radius: 18px; box-shadow: 0 12px 30px rgba(7, 86, 199, 0.24); font-size: 1.05rem; font-weight: 800; letter-spacing: 0.08em; }
.product-lines { position: absolute; top: 48px; left: 146px; right: 34px; }
.product-lines i { display: block; height: 9px; margin-bottom: 12px; background: #d8e3f2; border-radius: 10px; }
.product-lines i:nth-child(1) { width: 78%; background: #afcaed; }
.product-lines i:nth-child(2) { width: 100%; }
.product-lines i:nth-child(3) { width: 62%; }
.product-score { margin-top: 38px; }
.product-score span, .product-score strong { display: block; }
.product-score span { color: #7a879b; font-size: 0.78rem; }
.product-score strong { margin-top: 2px; color: var(--blue); font-size: 1.5rem; }
.product-parts { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 38px; }
.product-parts span { padding: 11px 6px; text-align: center; background: #edf3fa; border: 1px solid #dae5f2; border-radius: 7px; color: #536178; font-size: 0.75rem; }
.product-copy > p:not(.eyebrow) { margin: 24px 0 0; color: var(--muted); font-size: 1.05rem; }
.product-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.product-tags span { padding: 7px 12px; color: var(--blue-strong); background: var(--blue-light); border-radius: 6px; font-size: 0.82rem; font-weight: 700; }

.section-muted { background: var(--surface); }
.about-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 90px; }
.about-copy > p { margin: 0; color: var(--muted); font-size: 1.06rem; }
.company-facts { margin: 36px 0 0; border-top: 1px solid var(--line); }
.company-facts div { display: grid; grid-template-columns: 118px 1fr; gap: 20px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.company-facts dt { color: #758198; }
.company-facts dd { margin: 0; font-weight: 650; }
.company-facts a, .legal-article a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }

.contact { padding: 94px 0; color: var(--white); background: linear-gradient(125deg, #073f96, #071e45 72%); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(360px, 0.8fr); gap: 90px; align-items: center; }
.contact-grid > div > p:last-child { max-width: 600px; margin: 24px 0 0; color: #c0d3ec; }
.contact-card { padding: 28px 32px; background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.18); border-radius: 14px; }
.contact-card div { padding: 15px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.13); }
.contact-card div:last-child { border-bottom: 0; }
.contact-card span, .contact-card strong, .contact-card a { display: block; }
.contact-card span { color: #9fb9d9; font-size: 0.78rem; }
.contact-card strong, .contact-card a { margin-top: 3px; font-size: 0.95rem; font-weight: 650; }
.contact-card a:hover { text-decoration: underline; }

.site-footer { padding: 34px 0; color: #a6b4c8; background: #06142c; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 12px 32px; align-items: center; }
.footer-inner strong { color: var(--white); font-size: 0.95rem; }
.footer-inner p { margin: 3px 0 0; font-size: 0.78rem; }
.footer-links { display: flex; gap: 22px; font-size: 0.82rem; }
.footer-links a:hover { color: var(--white); }
.copyright { grid-column: 1 / -1; padding-top: 14px; border-top: 1px solid rgba(255, 255, 255, 0.1); }

.back-link { color: var(--blue); font-weight: 700; }
.legal-page { background: var(--surface); }
.legal-main { padding: 78px 0 100px; }
.legal-article { max-width: 860px; padding: 56px 64px; background: var(--white); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 16px 44px rgba(17, 51, 94, 0.08); }
.legal-article h1 { margin: 0; font-size: clamp(2.3rem, 5vw, 3.4rem); line-height: 1.2; }
.legal-updated { margin: 12px 0 38px !important; color: #7b879b; font-size: 0.85rem; }
.legal-article h2 { margin: 38px 0 10px; font-size: 1.18rem; }
.legal-article p { color: var(--muted); }

.not-found-page { min-height: 100vh; display: grid; place-items: center; background: linear-gradient(145deg, #f5f9ff, #eaf3ff); }
.not-found { width: min(calc(100% - 40px), 620px); padding: 70px 42px; text-align: center; background: var(--white); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.not-found img { margin: 0 auto 26px; }
.not-found h1 { margin: 0; font-size: 2.2rem; }
.not-found p:not(.eyebrow) { margin: 14px 0 28px; color: var(--muted); }

@media (max-width: 900px) {
  .site-header { position: static; }
  .header-inner { padding: 14px 0; align-items: flex-start; }
  .site-nav { justify-content: flex-end; flex-wrap: wrap; gap: 12px 20px; }
  .hero { padding: 76px 0 82px; }
  .hero-grid, .product-grid, .capability-grid, .contact-grid { grid-template-columns: 1fr; gap: 58px; }
  .delivery-panel { max-width: 620px; }
  .section { padding: 78px 0; }
  .section-heading, .about-grid { grid-template-columns: 1fr; gap: 26px; }
  .product-card { max-width: 620px; }
  .contact { padding: 76px 0; }
}

@media (max-width: 640px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .header-inner { display: block; }
  .brand { margin-bottom: 14px; }
  .site-nav { justify-content: flex-start; gap: 10px 16px; font-size: 0.82rem; }
  .nav-contact { padding: 5px 11px; }
  .hero { padding-top: 62px; }
  .hero h1 { font-size: clamp(2.25rem, 11vw, 3rem); }
  .hero-summary { font-size: 1rem; }
  .hero-points { display: grid; gap: 8px; }
  .delivery-panel { padding: 20px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 0; padding: 28px; }
  .service-card h3 { margin-top: 32px; }
  .product-grid { grid-template-columns: minmax(0, 1fr); }
  .product-card { padding: 11px; }
  .product-body { min-height: 290px; padding: 24px; }
  .product-lines { left: 126px; right: 24px; }
  .product-parts { grid-template-columns: repeat(2, 1fr); }
  .company-facts div { grid-template-columns: 1fr; gap: 4px; }
  .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .contact-card { padding: 22px; }
  .footer-inner { grid-template-columns: 1fr; }
  .copyright { grid-column: 1; }
  .legal-main { padding: 40px 0 70px; }
  .legal-article { padding: 34px 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}