:root {
  --blue: #1677ff;
  --blue-bright: #4ea1ff;
  --navy: #073b8c;
  --navy-deep: #03265e;
  --gold: #ffc857;
  --ink: #112547;
  --muted: #64748b;
  --line: rgba(16, 76, 158, .12);
  --pale: #f4f9ff;
  --white: #fff;
  --shadow: 0 18px 60px rgba(7, 59, 140, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  width: 100%;
  background: rgba(255,255,255,.88);
  border-bottom: 1px solid rgba(15,77,160,.08);
  backdrop-filter: blur(18px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 76px; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand img { width: 49px; height: 49px; object-fit: cover; object-position: 50% 25%; border-radius: 50%; }
.brand-text { display: flex; flex-direction: column; gap: 2px; }
.brand-text strong { color: var(--navy); font-size: 20px; letter-spacing: 2px; }
.brand-text small { color: #5680b7; font-size: 9px; letter-spacing: 3px; }
.site-nav { display: flex; align-items: center; gap: 34px; font-size: 14px; color: #36557e; }
.site-nav a { position: relative; transition: color .25s ease; }
.site-nav a:not(.nav-cta)::after {
  position: absolute; bottom: -10px; left: 50%; width: 0; height: 2px;
  content: ""; background: var(--blue); transition: .25s ease; transform: translateX(-50%);
}
.site-nav a:hover, .site-nav a.active { color: var(--blue); }
.site-nav a:hover::after, .site-nav a.active::after { width: 18px; }
.nav-cta { padding: 11px 21px; color: #fff !important; background: var(--blue); border-radius: 24px; box-shadow: 0 9px 20px rgba(22,119,255,.2); }
.menu-toggle { display: none; }

.hero { position: relative; min-height: 760px; padding: 186px 0 48px; overflow: hidden; background: linear-gradient(135deg,#f9fcff 0%,#f1f8ff 56%,#e9f4ff 100%); }
.hero::before { position: absolute; inset: 0; content: ""; opacity: .55; background-image: linear-gradient(rgba(22,119,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(22,119,255,.05) 1px,transparent 1px); background-size: 56px 56px; mask-image: linear-gradient(90deg,#000,transparent 78%); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(2px); }
.hero-glow-one { right: 4%; top: 16%; width: 560px; height: 560px; background: radial-gradient(circle,rgba(30,132,255,.18),rgba(30,132,255,0) 68%); }
.hero-glow-two { left: 30%; bottom: -120px; width: 320px; height: 320px; background: radial-gradient(circle,rgba(255,200,87,.12),rgba(255,200,87,0) 70%); }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 50px; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 20px; color: var(--blue); font-size: 11px; font-weight: 700; letter-spacing: 2px; }
.eyebrow span { display: inline-block; width: 28px; height: 1px; background: currentColor; }
h1 { margin: 0; color: var(--navy-deep); font-size: clamp(54px,6vw,76px); line-height: 1.15; letter-spacing: -3px; }
h1 em { color: var(--blue); font-style: normal; }
.hero-intro { max-width: 570px; margin: 27px 0 34px; color: #536b8d; font-size: 18px; line-height: 1.9; }
.hero-actions { display: flex; gap: 16px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 25px; border-radius: 6px; font-size: 14px; font-weight: 700; transition: transform .25s ease, box-shadow .25s ease; }
.button:hover { transform: translateY(-3px); }
.button-primary { gap: 13px; color: #fff; background: var(--blue); box-shadow: 0 14px 26px rgba(22,119,255,.24); }
.button-primary span { font-size: 22px; line-height: 1; }
.button-ghost { color: var(--navy); border: 1px solid rgba(7,59,140,.18); background: rgba(255,255,255,.58); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 56px; }
.hero-tags span { padding: 7px 14px; color: #6281a9; background: rgba(255,255,255,.72); border: 1px solid rgba(14,92,192,.1); border-radius: 20px; font-size: 12px; }
.hero-art { position: relative; height: 470px; }
.hero-logo { position: absolute; top: 73px; left: 50%; width: 292px; height: 292px; overflow: hidden; background: #fff; border: 12px solid rgba(255,255,255,.86); border-radius: 50%; box-shadow: 0 24px 70px rgba(24,110,224,.18); transform: translateX(-50%); }
.hero-logo img { width: 100%; height: 100%; object-fit: cover; }
.orbit { position: absolute; left: 50%; border: 1px solid rgba(22,119,255,.2); border-radius: 50%; transform: translateX(-50%); }
.orbit-large { top: 16px; width: 405px; height: 405px; }
.orbit-small { top: 49px; width: 340px; height: 340px; border-style: dashed; animation: spin 24s linear infinite; }
.star { position: absolute; color: var(--gold); text-shadow: 0 5px 16px rgba(255,200,87,.55); }
.star-large { top: 11px; right: 30px; font-size: 72px; animation: float 4s ease-in-out infinite; }
.star-small { bottom: 75px; left: 30px; color: var(--blue-bright); font-size: 26px; animation: float 3s ease-in-out infinite reverse; }
.float-card { position: absolute; display: flex; align-items: center; gap: 12px; padding: 13px 17px; background: rgba(255,255,255,.9); border: 1px solid rgba(22,119,255,.09); border-radius: 10px; box-shadow: var(--shadow); }
.float-card div { display: flex; flex-direction: column; gap: 3px; }
.float-card strong { color: var(--navy); font-size: 13px; }
.float-card small { color: #8ca2be; font-size: 8px; letter-spacing: 1px; }
.float-card-top { top: 109px; right: -22px; }
.float-card-bottom { bottom: 34px; left: -2px; }
.float-icon { display: grid; width: 38px; height: 38px; color: #fff; background: linear-gradient(135deg,var(--blue),#66aeff); border-radius: 8px; place-items: center; font-size: 12px; font-weight: 700; }
.pulse { width: 12px; height: 12px; background: #33d68b; border-radius: 50%; box-shadow: 0 0 0 7px rgba(51,214,139,.13); }
.hero-foot { position: relative; display: flex; align-items: center; gap: 22px; margin-top: 70px; color: #8ba2bc; font-size: 12px; letter-spacing: 1px; }
.hero-foot span { flex: 1; height: 1px; background: linear-gradient(90deg,rgba(70,129,199,.26),transparent); }

.section { padding: 112px 0; }
.section-heading h2 { margin: 0; color: var(--navy-deep); font-size: clamp(36px,4vw,48px); line-height: 1.25; letter-spacing: -1px; }
.section-heading > p:last-child { margin: 15px 0 0; color: #778ba5; font-size: 15px; line-height: 1.8; }
.heading-centered { margin-bottom: 46px; text-align: center; }
.heading-centered .eyebrow { justify-content: center; }
.section-about { background: #fff; }
.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 110px; }
.about-copy > p { margin: 0 0 16px; color: #5f7491; font-size: 16px; line-height: 2; }
.value-row { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 39px; border-top: 1px solid var(--line); }
.value-row div { display: flex; flex-direction: column; gap: 7px; padding-top: 20px; }
.value-row strong { color: var(--navy); font-size: 20px; }
.value-row small { color: #9badc4; font-size: 9px; letter-spacing: 1px; }

.section-services { background: var(--pale); }
.service-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.service-card { position: relative; min-height: 340px; padding: 30px 25px; overflow: hidden; background: #fff; border: 1px solid rgba(17,94,193,.08); border-radius: 8px; transition: transform .3s ease,box-shadow .3s ease,border-color .3s ease; }
.service-card:hover { border-color: rgba(22,119,255,.28); box-shadow: var(--shadow); transform: translateY(-8px); }
.service-index { position: absolute; top: 28px; right: 22px; color: #dce9f8; font-size: 29px; font-weight: 700; }
.service-icon { display: grid; width: 58px; height: 58px; color: var(--blue); background: #ecf5ff; border-radius: 17px; place-items: center; font-size: 17px; font-weight: 700; }
.service-icon-bot { font-size: 34px; }
.service-card h3 { margin: 29px 0 12px; color: var(--navy); font-size: 19px; }
.service-card p { margin: 0; color: #7487a1; font-size: 14px; line-height: 1.85; }
.service-more { position: absolute; bottom: 27px; color: #a5b7cd; font-size: 10px; letter-spacing: 1px; }
.service-more b { padding-left: 8px; color: var(--blue); font-size: 15px; }

.section-capabilities { color: #fff; background: linear-gradient(125deg,#052960,#074698 68%,#0861c4); }
.section-capabilities .section-heading h2 { color: #fff; }
.section-capabilities .section-heading > p:last-child { color: rgba(255,255,255,.58); }
.eyebrow-light { color: #78b9ff; }
.capability-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; margin-top: 48px; background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.15); }
.capability-item { position: relative; display: flex; min-height: 142px; padding: 28px; flex-direction: column; justify-content: end; background: rgba(4,48,108,.8); transition: background .25s ease; }
.capability-item:hover { background: rgba(17,106,207,.72); }
.capability-item b { position: absolute; top: 25px; right: 26px; color: rgba(255,255,255,.2); font-size: 26px; }
.capability-item strong { font-size: 17px; }
.capability-item small { margin-top: 9px; color: rgba(255,255,255,.43); font-size: 9px; letter-spacing: 1px; }

.section-scenarios { background: #fff; }
.scenario-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 15px; }
.scenario-card { min-height: 204px; padding: 27px; background: linear-gradient(150deg,#fff,#f5faff); border: 1px solid var(--line); border-radius: 7px; transition: transform .25s ease,box-shadow .25s ease; }
.scenario-card:hover { box-shadow: 0 15px 36px rgba(7,59,140,.09); transform: translateY(-5px); }
.scenario-card span { color: var(--blue); font-size: 12px; font-weight: 700; }
.scenario-card h3 { margin: 28px 0 10px; color: var(--navy); font-size: 17px; }
.scenario-card p { margin: 0; color: #7c8ea5; font-size: 13px; line-height: 1.8; }

.section-contact { padding: 18px 0 100px; }
.contact-panel { display: grid; grid-template-columns: 1fr .8fr; gap: 30px; padding: 57px 66px; color: #fff; background: linear-gradient(125deg,#062e70,#0a65cd); border-radius: 12px; box-shadow: 0 20px 50px rgba(5,67,147,.18); }
.contact-panel h2 { margin: 0; color: #fff; font-size: 36px; line-height: 1.35; }
.contact-panel p:last-child { max-width: 530px; margin: 19px 0 0; color: rgba(255,255,255,.64); font-size: 14px; line-height: 1.9; }
.contact-list { display: grid; grid-template-columns: 1fr; }
.contact-list div { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.16); }
.contact-list small { color: rgba(255,255,255,.62); }
.contact-list a { color: #fff; font-size: 14px; font-weight: 700; transition: color .2s ease; }
.contact-list a:hover { color: var(--gold); }

.site-footer { color: rgba(255,255,255,.58); background: #042150; }
.footer-main { display: flex; align-items: center; gap: 26px; padding: 35px 0; }
.brand-footer img { width: 42px; height: 42px; }
.brand-footer .brand-text strong { color: #fff; font-size: 17px; }
.footer-main p { flex: 1; padding-left: 26px; border-left: 1px solid rgba(255,255,255,.15); font-size: 13px; }
.footer-main nav { display: flex; gap: 20px; font-size: 13px; }
.footer-main nav a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; padding: 15px 0; border-top: 1px solid rgba(255,255,255,.1); font-size: 11px; }
.footer-bottom a { transition: color .2s ease; }
.footer-bottom a:hover { color: #fff; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease,transform .65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
@keyframes spin { to { transform: translateX(-50%) rotate(360deg); } }
@keyframes float { 50% { transform: translateY(-10px); } }

@media (max-width: 980px) {
  .service-grid,.scenario-grid { grid-template-columns: repeat(2,1fr); }
  .about-grid { gap: 55px; }
  .hero-grid { gap: 14px; }
  .hero-art { transform: scale(.88); transform-origin: right center; }
}
@media (max-width: 760px) {
  .container { width: min(100% - 32px,600px); }
  .header-inner { min-height: 68px; }
  .brand img { width: 42px; height: 42px; }
  .brand-text strong { font-size: 17px; }
  .menu-toggle { display: flex; width: 42px; height: 42px; padding: 9px; flex-direction: column; justify-content: center; gap: 5px; background: transparent; border: 0; }
  .menu-toggle > span:not(.sr-only) { display: block; width: 23px; height: 2px; background: var(--navy); transition: .25s ease; }
  .menu-toggle.open > span:first-child { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.open > span:nth-child(2) { opacity: 0; }
  .menu-toggle.open > span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .site-nav { position: absolute; top: 68px; left: 0; display: none; width: 100%; padding: 18px 24px 25px; align-items: stretch; flex-direction: column; gap: 18px; background: rgba(255,255,255,.98); border-top: 1px solid var(--line); box-shadow: 0 14px 20px rgba(7,59,140,.07); }
  .site-nav.open { display: flex; }
  .site-nav a:not(.nav-cta)::after { display: none; }
  .nav-cta { text-align: center; }
  .hero { min-height: auto; padding: 137px 0 37px; }
  .hero-grid { display: block; }
  h1 { font-size: 49px; letter-spacing: -2px; }
  .hero-intro { margin: 21px 0 29px; font-size: 16px; line-height: 1.8; }
  .hero-tags { margin-top: 37px; }
  .hero-art { height: 338px; margin-top: 24px; transform: none; }
  .hero-logo { top: 56px; width: 224px; height: 224px; }
  .orbit-large { top: 21px; width: 294px; height: 294px; }
  .orbit-small { top: 43px; width: 250px; height: 250px; }
  .star-large { top: 4px; right: 6px; font-size: 55px; }
  .star-small { bottom: 50px; left: 8px; }
  .float-card { padding: 10px 12px; }
  .float-card-top { top: 85px; right: -3px; }
  .float-card-bottom { bottom: 18px; left: 7px; }
  .float-icon { width: 30px; height: 30px; }
  .hero-foot { display: none; }
  .section { padding: 78px 0; }
  .about-grid { display: block; }
  .about-copy { margin-top: 26px; }
  .service-grid,.scenario-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 300px; }
  .capability-grid { grid-template-columns: repeat(2,1fr); }
  .capability-item { min-height: 124px; padding: 20px; }
  .capability-item b { top: 18px; right: 18px; }
  .contact-panel { display: block; padding: 37px 25px; }
  .contact-panel h2 { font-size: 30px; }
  .contact-list { margin-top: 25px; }
  .footer-main { align-items: start; flex-direction: column; gap: 17px; }
  .footer-main p { margin: 0; padding-left: 0; border-left: 0; line-height: 1.7; }
  .footer-bottom { gap: 7px; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { scroll-behavior: auto !important; animation: none !important; transition-duration: .01ms !important; }
}