:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --ink: #122033;
  --muted: #5e6d7c;
  --line: #dce5ee;
  --primary: #0b5eb8;
  --primary-dark: #084a92;
  --accent: #19a992;
  --navy: #07182f;
  --navy-2: #0d2b52;
  --shadow: 0 20px 55px rgba(7, 24, 47, .11);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.68;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  background: var(--primary);
  color: #fff;
  padding: 8px 12px;
  border-radius: 10px;
  z-index: 999;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 247, 251, .92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(220, 229, 238, .85);
}
.nav-wrap {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: inline-flex; align-items: center; min-width: 220px; }
.brand img { height: 54px; width: auto; }
.footer-brand img { height: 54px; width: auto; }
.site-nav { display: flex; align-items: center; gap: 28px; font-size: 15px; color: #2d4056; }
.site-nav a { position: relative; font-weight: 600; }
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  border-radius: 999px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .2s ease;
}
.site-nav a:hover::after { transform: scaleX(1); }
.nav-toggle { display: none; }

.hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 76px;
  background:
    radial-gradient(circle at 16% 10%, rgba(25, 169, 146, .18), transparent 33%),
    radial-gradient(circle at 86% 6%, rgba(11, 94, 184, .17), transparent 38%),
    linear-gradient(180deg, #eef5ff 0%, #f4f7fb 88%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(11, 94, 184, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 94, 184, .055) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.78), transparent 86%);
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.04fr .96fr;
  gap: 56px;
  align-items: center;
}
.eyebrow, .section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: .05em;
}
.eyebrow::before, .section-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--accent);
  border-radius: 999px;
}
.hero h1 {
  margin: 18px 0 22px;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.045em;
}
.hero-copy p { margin: 0; color: var(--muted); font-size: 18px; max-width: 680px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 800;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 16px 32px rgba(11, 94, 184, .24); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { border-color: rgba(11, 94, 184, .24); background: rgba(255,255,255,.72); color: var(--primary); }
.btn-light { background: #fff; color: var(--primary); box-shadow: 0 14px 32px rgba(0,0,0,.15); }
.trust-strip {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.trust-strip span {
  padding: 8px 12px;
  border: 1px solid rgba(11, 94, 184, .14);
  border-radius: 999px;
  background: rgba(255,255,255,.72);
  color: #384e68;
  font-size: 14px;
}
.hero-panel { position: relative; min-height: 500px; display: grid; place-items: center; }
.dashboard-card {
  position: relative;
  width: min(440px, 100%);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(255,255,255,.96), rgba(235,244,255,.94));
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,.78);
  padding: 24px;
  z-index: 2;
}
.card-top { display: flex; align-items: center; gap: 10px; color: #53677e; font-size: 14px; }
.status-dot { width: 10px; height: 10px; background: #12b76a; border-radius: 999px; box-shadow: 0 0 0 6px rgba(18,183,106,.14); }
.screen-lines { margin: 32px 0 20px; display: grid; gap: 12px; }
.screen-lines i { height: 14px; border-radius: 999px; background: linear-gradient(90deg, rgba(11,94,184,.28), rgba(25,169,146,.16)); }
.screen-lines i:nth-child(2) { width: 78%; }
.screen-lines i:nth-child(3) { width: 58%; }
.plate-box {
  border-radius: 20px;
  padding: 20px;
  color: #fff;
  background: linear-gradient(135deg, var(--navy), var(--primary));
  box-shadow: 0 18px 34px rgba(7,24,47,.22);
}
.plate-box b { display: block; font-size: 25px; letter-spacing: .08em; }
.plate-box small { opacity: .82; }
.mini-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 18px; }
.mini-grid div { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 16px; }
.mini-grid strong { display: block; }
.mini-grid small { color: var(--muted); }
.orbit {
  position: absolute;
  border-radius: 999px;
  border: 1px solid rgba(11,94,184,.14);
}
.orbit-one { width: 480px; height: 480px; animation: spin 24s linear infinite; }
.orbit-two { width: 360px; height: 360px; animation: spin 18s linear reverse infinite; }
.orbit::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 40px;
  left: 82px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 10px rgba(25,169,146,.12);
}
@keyframes spin { to { transform: rotate(360deg); } }

.section { padding: 88px 0; }
.section-head { text-align: center; max-width: 780px; margin: 0 auto 42px; }
.section-head h2, .intro-card h2, .about h2, .cta-band h2, .contact h2 {
  margin: 12px 0 14px;
  font-size: clamp(30px, 3.4vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.035em;
}
.section-head p, .intro-card p, .about p, .cta-band p, .contact-info p { color: var(--muted); margin: 0; }
.intro-section { padding: 28px 0 62px; }
.intro-card {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 36px;
  align-items: center;
  padding: 36px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 14px 38px rgba(7,24,47,.06);
}
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-card, .process-card, .solution-list article, .about-panel, .contact-form, .contact-info {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 12px 32px rgba(7,24,47,.06);
}
.product-card {
  padding: 28px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 17px;
  color: #fff;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}
.product-card h3, .process-card h3, .solution-list h3, .about-panel h3, .contact-form h3 { margin: 18px 0 10px; font-size: 22px; }
.product-card p, .process-card p, .solution-list p { margin: 0; color: var(--muted); }

.solutions {
  color: #fff;
  background:
    radial-gradient(circle at 15% 20%, rgba(25,169,146,.22), transparent 32%),
    linear-gradient(135deg, var(--navy), var(--navy-2));
}
.section-head.light p { color: rgba(255,255,255,.72); }
.solutions .section-kicker { color: #8deee2; }
.solution-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.solution-list article {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.14);
  box-shadow: none;
  padding: 26px;
}
.solution-list span { color: #8deee2; font-weight: 800; font-size: 14px; letter-spacing: .1em; }
.solution-list p { color: rgba(255,255,255,.72); }

.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.process-card { padding: 26px; }
.process-card b { color: var(--primary); letter-spacing: .08em; }
.process-card h3 { margin-top: 14px; }
.about { background: #fff; }
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 36px; align-items: center; }
.about-panel { padding: 32px; background: linear-gradient(180deg, #f8fbff, #fff); }
.about-panel h3 { margin-top: 0; }
.about-panel ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 14px; }
.about-panel li {
  position: relative;
  padding-left: 28px;
  color: #40536a;
}
.about-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--accent);
}
.cta-band {
  padding: 70px 0;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--navy));
}
.cta-grid { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; }
.cta-band .section-kicker { color: #8deee2; }
.cta-band p { color: rgba(255,255,255,.78); max-width: 760px; }

.contact-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 28px; align-items: start; }
.contact-info, .contact-form { padding: 32px; }
.info-list { display: grid; gap: 14px; margin-top: 28px; }
.info-list div { padding: 16px; border-radius: 16px; background: #f8fbff; border: 1px solid var(--line); }
.info-list strong { display: block; font-size: 14px; color: var(--primary); margin-bottom: 5px; }
.info-list span { color: #34465c; }
.contact-form { display: grid; gap: 16px; }
.contact-form h3 { margin-top: 0; }
.contact-form label { display: grid; gap: 8px; color: #34465c; font-weight: 700; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #f8fbff;
  border-radius: 14px;
  padding: 13px 14px;
  color: var(--ink);
  outline: none;
  transition: border-color .18s ease, box-shadow .18s ease;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  border-color: rgba(11,94,184,.55);
  box-shadow: 0 0 0 4px rgba(11,94,184,.1);
}
.site-footer { background: #07182f; color: #fff; padding: 54px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 36px; }
.site-footer p { color: rgba(255,255,255,.66); max-width: 460px; }
.site-footer strong { display: block; margin-bottom: 12px; }
.site-footer a { display: block; color: rgba(255,255,255,.66); margin: 8px 0; }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,.12);
  margin-top: 42px;
  padding: 18px 0;
  color: rgba(255,255,255,.58);
  font-size: 14px;
}
.footer-bottom a { display: inline; margin: 0; }
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 20px);
  opacity: 0;
  pointer-events: none;
  background: #07182f;
  color: #fff;
  padding: 12px 18px;
  border-radius: 999px;
  box-shadow: var(--shadow);
  transition: opacity .2s ease, transform .2s ease;
  z-index: 80;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 980px) {
  .hero-grid, .intro-card, .about-grid, .contact-grid, .cta-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 70px; }
  .hero-panel { min-height: 430px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-list, .process-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .container { width: min(100% - 28px, 1180px); }
  .nav-toggle {
    display: inline-grid;
    gap: 4px;
    border: 0;
    background: transparent;
    color: var(--ink);
    padding: 8px;
    cursor: pointer;
  }
  .nav-toggle span { display: block; width: 25px; height: 2px; border-radius: 999px; background: var(--ink); }
  .nav-toggle b { font-size: 11px; font-weight: 600; }
  .site-nav {
    position: absolute;
    left: 14px;
    right: 14px;
    top: 76px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
    overflow: hidden;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 14px 18px; border-bottom: 1px solid var(--line); }
  .site-nav a:last-child { border-bottom: 0; }
  .site-nav a::after { display: none; }
  .brand { min-width: auto; }
  .brand img { height: 48px; }
  .hero h1 { font-size: 36px; }
  .hero-copy p { font-size: 16px; }
  .hero-panel { min-height: 360px; }
  .dashboard-card { padding: 18px; border-radius: 24px; }
  .plate-box b { font-size: 20px; }
  .orbit-one { width: 360px; height: 360px; }
  .orbit-two { width: 280px; height: 280px; }
  .section { padding: 66px 0; }
  .product-grid, .solution-list, .process-grid, .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { display: grid; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}