:root {
  --xz-ink: #111b63;
  --xz-ink-2: #233083;
  --xz-blue: #4c5df2;
  --xz-violet: #5364ee;
  --xz-cyan: #1bbfea;
  --xz-green: #10cda0;
  --xz-paper: #f7f9ff;
  --xz-white: #ffffff;
  --xz-muted: #667099;
  --xz-line: #dbe2f6;
  --xz-soft: #edf3ff;
  --xz-dark: #081144;
  --xz-shadow: 0 20px 60px rgba(32, 51, 130, 0.12);
  --xz-shadow-sm: 0 10px 30px rgba(32, 51, 130, 0.09);
  --xz-radius-sm: 12px;
  --xz-radius: 22px;
  --xz-radius-lg: 36px;
  --xz-container: 1200px;
  --xz-font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--xz-ink);
  background: var(--xz-white);
  font-family: var(--xz-font);
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
h1, h2, h3, p, ul, ol, figure { margin-top: 0; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.025em; }
h1 { font-size: clamp(2.65rem, 5vw, 5.4rem); margin-bottom: 1.5rem; }
h2 { font-size: clamp(2rem, 3.6vw, 3.5rem); margin-bottom: 1.2rem; }
h3 { font-size: 1.3rem; margin-bottom: .65rem; }
p { color: var(--xz-muted); }
ul, ol { padding-left: 1.25rem; }
:focus-visible { outline: 3px solid rgba(27, 191, 234, .45); outline-offset: 3px; }
.skip-link { position: fixed; z-index: 1000; left: 1rem; top: -5rem; padding: .7rem 1rem; background: var(--xz-dark); color: white; border-radius: 8px; }
.skip-link:focus { top: 1rem; }
.container { width: min(calc(100% - 40px), var(--xz-container)); margin-inline: auto; }
.section { padding: clamp(4.5rem, 9vw, 8rem) 0; position: relative; }
.section--soft { background: linear-gradient(180deg, #f9fbff, #eef4ff); }
.section--dark { background: var(--xz-dark); color: white; overflow: hidden; }
.section--dark p { color: #bfc9ee; }
.eyebrow { display: inline-flex; align-items: center; gap: .55rem; color: var(--xz-blue); font-size: .82rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 1.1rem; }
.eyebrow::before { content: ""; width: 28px; height: 2px; background: linear-gradient(90deg, var(--xz-blue), var(--xz-green)); }
.lead { font-size: clamp(1.08rem, 1.5vw, 1.32rem); max-width: 720px; }
.section-heading { max-width: 760px; margin-bottom: 3rem; }
.section-heading--center { text-align: center; margin-inline: auto; }
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stack { display: grid; gap: 1rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(219,226,246,.8); }
.nav-wrap { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; width: 176px; flex: 0 0 auto; }
.brand img { width: 100%; height: 52px; object-fit: contain; object-position: left center; }
.site-nav { display: flex; align-items: center; gap: clamp(1rem, 2.5vw, 2.4rem); }
.nav-link { font-size: .96rem; color: var(--xz-ink); font-weight: 650; padding: .6rem 0; position: relative; }
.nav-link::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px; background: linear-gradient(90deg, var(--xz-blue), var(--xz-green)); transition: right .22s ease; }
.nav-link:hover::after, .nav-link[aria-current="page"]::after { right: 0; }
.nav-actions { display: flex; align-items: center; gap: .75rem; }
.menu-toggle { display: none; border: 0; background: transparent; color: var(--xz-ink); width: 44px; height: 44px; border-radius: 12px; }
.menu-toggle svg { width: 24px; height: 24px; }

.hero { min-height: 700px; display: grid; align-items: center; overflow: hidden; position: relative; background: radial-gradient(circle at 88% 12%, rgba(16,205,160,.16), transparent 24%), radial-gradient(circle at 70% 50%, rgba(76,93,242,.12), transparent 30%), var(--xz-paper); }
.hero::after { content: ""; position: absolute; width: 520px; height: 520px; right: -150px; top: 70px; border: 68px solid transparent; border-top-color: rgba(16,205,160,.33); border-right-color: rgba(46,173,219,.28); border-bottom-color: rgba(76,93,242,.29); border-radius: 50%; transform: rotate(10deg); pointer-events: none; }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: clamp(2.5rem, 6vw, 6rem); align-items: center; padding: 5rem 0; position: relative; z-index: 1; }
.hero-copy { max-width: 660px; }
.hero-copy h1 strong { color: transparent; background: linear-gradient(100deg, var(--xz-ink), var(--xz-blue) 55%, var(--xz-green)); background-clip: text; -webkit-background-clip: text; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 2rem; }
.hero-visual { position: relative; }
.hero-card { padding: 20px; border-radius: var(--xz-radius-lg); background: rgba(255,255,255,.72); box-shadow: var(--xz-shadow); border: 1px solid rgba(255,255,255,.9); backdrop-filter: blur(18px); transform: rotate(-1deg); }
.hero-card img { aspect-ratio: 16/10; width: 100%; object-fit: cover; border-radius: 24px; }
.hero-card--interface { min-height: 430px; display: grid; align-content: center; background: linear-gradient(145deg, rgba(255,255,255,.9), rgba(230,239,255,.72)); }
.mock-window { border: 1px solid rgba(101,122,196,.25); border-radius: 20px; overflow: hidden; background: rgba(8,17,68,.92); box-shadow: 0 30px 80px rgba(8,17,68,.25); color: white; }
.mock-toolbar { padding: .75rem 1rem; display: flex; gap: .4rem; border-bottom: 1px solid rgba(255,255,255,.12); }
.mock-toolbar i { width: 8px; height: 8px; border-radius: 50%; background: var(--xz-green); }
.mock-body { display: grid; grid-template-columns: 1fr .75fr; min-height: 310px; }
.mock-media { background: linear-gradient(140deg, #31449d, #11194b); padding: 1.5rem; display: grid; place-items: center; }
.mock-product { width: 75%; aspect-ratio: 4/3; border-radius: 18px; background: linear-gradient(135deg, rgba(255,255,255,.9), rgba(184,204,255,.7)); display: grid; place-items: center; color: var(--xz-ink); font-weight: 800; box-shadow: inset 0 0 0 1px rgba(255,255,255,.35); }
.mock-panel { padding: 1.4rem; background: rgba(255,255,255,.08); }
.mock-label { display: block; color: #aebdea; font-size: .72rem; margin: 1rem 0 .45rem; }
.mock-options { display: grid; grid-template-columns: repeat(3,1fr); gap: .45rem; }
.mock-option { aspect-ratio: 1; border: 1px solid rgba(255,255,255,.24); border-radius: 9px; background: rgba(255,255,255,.1); }
.mock-option.is-active { border-color: var(--xz-green); box-shadow: 0 0 0 2px rgba(16,205,160,.22); }

.breadcrumb { display: flex; flex-wrap: wrap; gap: .55rem; list-style: none; padding: 0; margin: 0 0 2rem; color: var(--xz-muted); font-size: .88rem; }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: .55rem; color: #a9b2d2; }
.page-hero { padding: 5.5rem 0 4rem; position: relative; overflow: hidden; background: linear-gradient(140deg, #fafdff 0%, #eef3ff 70%, #e8fff9 100%); }
.page-hero::after { content: ""; position: absolute; width: 380px; height: 380px; border: 54px solid rgba(76,93,242,.09); border-top-color: rgba(16,205,160,.22); border-radius: 50%; right: -90px; top: -120px; }
.page-hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(2.7rem, 5vw, 4.8rem); }
.page-hero-media { border-radius: var(--xz-radius-lg); overflow: hidden; box-shadow: var(--xz-shadow); border: 8px solid rgba(255,255,255,.78); }
.page-hero-media img { width: 100%; aspect-ratio: 3/2; object-fit: cover; }
.meta-chips { display: flex; flex-wrap: wrap; gap: .65rem; margin-top: 1.5rem; }
.chip { display: inline-flex; align-items: center; gap: .4rem; padding: .55rem .85rem; border: 1px solid var(--xz-line); border-radius: 999px; background: rgba(255,255,255,.82); color: var(--xz-ink-2); font-size: .86rem; font-weight: 700; }
.chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: linear-gradient(135deg, var(--xz-blue), var(--xz-green)); }

.site-footer { background: #070f3f; color: white; padding: 5rem 0 1.5rem; }
.footer-grid { display: grid; grid-template-columns: 1.45fr repeat(3, 1fr); gap: 3rem; padding-bottom: 3.5rem; }
.footer-brand { width: 190px; background: white; border-radius: 14px; padding: .35rem .75rem; margin-bottom: 1.25rem; }
.footer-copy { color: #aeb9e1; max-width: 360px; }
.footer-title { font-weight: 800; margin-bottom: 1rem; }
.footer-links { display: grid; gap: .65rem; }
.footer-links a, .footer-links span { color: #b9c4e8; font-size: .9rem; }
.footer-links a:hover { color: white; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 1.5rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; color: #929fcf; font-size: .82rem; }

@media (max-width: 980px) {
  .site-nav { position: fixed; inset: 78px 0 auto; background: white; padding: 1.5rem 20px 2rem; display: none; box-shadow: var(--xz-shadow-sm); flex-direction: column; align-items: stretch; }
  .site-nav.is-open { display: flex; }
  .menu-toggle { display: grid; place-items: center; }
  .nav-actions .btn { display: none; }
  .hero-grid, .page-hero-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-visual { max-width: 680px; }
  .page-hero-media { width: 100%; max-width: 680px; justify-self: center; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .container { width: min(calc(100% - 28px), var(--xz-container)); }
  .section { padding: 4rem 0; }
  .brand { width: 145px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .hero-grid { padding: 3.5rem 0; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .btn { justify-content: center; }
  .mock-body { grid-template-columns: 1fr; }
  .mock-panel { display: none; }
  .page-hero { padding-top: 3rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}