:root {
  --ink: #0a1626;
  --muted: #667489;
  --line: rgba(13, 34, 58, .13);
  --blue: #075dff;
  --cyan: #00c8ff;
  --yellow: #ffd400;
  --paper: #f3f6f9;
  --header-h: 86px;
  --ease: cubic-bezier(.2, .75, .25, 1);
}

* { box-sizing: border-box; }
.sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: #fff;
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }
button, input, textarea { font: inherit; }
.container { width: min(1520px, calc(100% - 10vw)); margin: 0 auto; }
.container.narrow { width: min(1240px, calc(100% - 10vw)); }

.site-header {
  position: fixed;
  z-index: 1000;
  inset: 0 0 auto;
  height: var(--header-h);
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.18);
  transition: color .35s, background .35s, transform .35s, box-shadow .35s;
}
.site-header.is-solid,
.site-header.theme-dark {
  color: var(--ink);
  background: rgba(255,255,255,.94);
  border-color: var(--line);
  box-shadow: 0 10px 35px rgba(16,39,69,.07);
  backdrop-filter: blur(15px);
}
.header-inner { height: 100%; display: flex; align-items: center; padding: 0 4vw; }
.brand { display: flex; align-items: center; min-width: 210px; }
.brand-logo { width: 164px; height: 58px; object-fit: contain; object-position: left center; flex: 0 0 auto; filter: drop-shadow(0 6px 14px rgba(0,0,0,.18)); transition: filter .3s; }
.site-header.is-solid .brand-logo,
.site-header.theme-dark .brand-logo { filter: brightness(0) saturate(100%) invert(8%) sepia(25%) saturate(1250%) hue-rotate(174deg) brightness(92%) contrast(98%); }
.brand-mark { position: relative; width: 42px; height: 35px; }
.brand-mark i { position: absolute; display: block; height: 7px; border-radius: 7px 0 7px 0; transform: skewX(-26deg); }
.brand-mark i:nth-child(1) { width: 35px; left: 2px; top: 3px; background: var(--yellow); }
.brand-mark i:nth-child(2) { width: 29px; right: 0; top: 14px; background: var(--cyan); }
.brand-mark i:nth-child(3) { width: 23px; left: 0; bottom: 0; background: var(--blue); }
.brand-name { font-size: 22px; line-height: 1; font-weight: 700; letter-spacing: .12em; }
.brand-en { display: block; margin-top: 6px; font-size: 8px; font-weight: 500; letter-spacing: .2em; opacity: .7; }
.main-nav { flex: 1; height: 100%; display: flex; justify-content: center; }
.nav-list { display: flex; height: 100%; gap: clamp(24px, 3vw, 56px); margin: 0; padding: 0; list-style: none; }
.nav-item { position: relative; height: 100%; display: flex; align-items: center; }
.nav-link { position: relative; padding: 33px 0 31px; font-size: 15px; white-space: nowrap; }
.nav-link::after { content: ""; position: absolute; left: 50%; bottom: 19px; width: 0; height: 3px; background: var(--yellow); transform: skewX(-30deg) translateX(-50%); transition: width .25s; }
.nav-item:hover > .nav-link::after, .nav-item.active > .nav-link::after { width: 25px; }
.nav-item:hover > .nav-link, .nav-item.active > .nav-link { color: var(--yellow); }
.dropdown {
  position: absolute;
  top: 74px;
  left: 50%;
  width: 220px;
  padding: 14px 0;
  color: var(--ink);
  background: rgba(255,255,255,.98);
  box-shadow: 0 20px 45px rgba(8,31,58,.15);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 12px);
  transition: .25s var(--ease);
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.dropdown a { display: flex; justify-content: space-between; padding: 12px 24px; font-size: 14px; color: #334258; transition: .2s; }
.dropdown a::after { content: "↗"; opacity: 0; transform: translate(-5px, 4px); transition: .2s; }
.dropdown a:hover { color: var(--blue); background: #f3f7ff; padding-left: 29px; }
.dropdown a:hover::after { opacity: 1; transform: translate(0, 0); }
.header-tools { display: flex; align-items: center; justify-content: flex-end; gap: 22px; min-width: 245px; }
.lang { font-size: 12px; letter-spacing: .08em; opacity: .78; }
.search-icon { width: 18px; height: 18px; border: 1.5px solid currentColor; border-radius: 50%; position: relative; }
.search-icon::after { content: ""; width: 7px; height: 1.5px; position: absolute; right: -5px; bottom: -2px; background: currentColor; transform: rotate(45deg); }
.menu-toggle { display: none; width: 34px; height: 34px; padding: 7px 3px; border: 0; color: inherit; background: none; }
.menu-toggle span { display: block; width: 27px; height: 1px; margin: 6px 0; background: currentColor; transition: .25s; }
.menu-open .menu-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
.menu-open .menu-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.eyebrow { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; color: var(--blue); font-size: 12px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 28px; height: 3px; background: var(--yellow); transform: skewX(-28deg); }
.section-title { margin: 0; font-size: clamp(32px, 3.6vw, 64px); line-height: 1.08; font-weight: 500; letter-spacing: -.04em; }
.section-title strong { color: var(--blue); font-weight: inherit; }
.section-desc { max-width: 680px; margin: 24px 0 0; color: var(--muted); font-size: 16px; line-height: 1.9; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 40px; margin-bottom: 56px; }
.section-head .section-desc { max-width: 570px; }
.btn-arrow { display: inline-flex; align-items: center; justify-content: space-between; gap: 18px; min-width: 188px; min-height: 52px; margin-top: 35px; padding: 7px 7px 7px 20px; border: 0; border-radius: 999px; background: rgba(255,255,255,.72); box-shadow: inset 0 0 0 1px rgba(19,40,66,.17); font-size: 13px; font-weight: 500; letter-spacing: .04em; transition: color .3s, background .3s, box-shadow .3s, transform .3s; }
.btn-arrow i { position: relative; flex: 0 0 38px; width: 38px; height: 38px; border-radius: 50%; background: var(--ink); transition: background .3s, transform .3s; }
.btn-arrow i::before { content: ""; position: absolute; left: 14px; top: 13px; width: 8px; height: 8px; border: solid #fff; border-width: 1.5px 1.5px 0 0; transform: rotate(45deg); }
.btn-arrow i::after { content: ""; position: absolute; left: 11px; top: 18px; width: 14px; height: 1.5px; background: #fff; }
.btn-arrow:hover { color: #fff; background: var(--blue); box-shadow: inset 0 0 0 1px var(--blue), 0 12px 28px rgba(7,93,255,.2); transform: translateY(-2px); }
.btn-arrow:hover i { background: #fff; transform: rotate(-8deg); }
.btn-arrow:hover i::before { border-color: var(--blue); }
.btn-arrow:hover i::after { background: var(--blue); }
.dark .btn-arrow, .solution-home .btn-arrow, .business-home .btn-arrow { background: rgba(255,255,255,.06); box-shadow: inset 0 0 0 1px rgba(255,255,255,.25); }
.dark .btn-arrow i, .solution-home .btn-arrow i, .business-home .btn-arrow i { background: var(--yellow); }
.dark .btn-arrow i::before, .solution-home .btn-arrow i::before, .business-home .btn-arrow i::before { border-color: var(--ink); }
.dark .btn-arrow i::after, .solution-home .btn-arrow i::after, .business-home .btn-arrow i::after { background: var(--ink); }

/* Keep action arrows optically identical across browsers and Swiper versions. */
.btn-arrow i { color: #fff; }
.btn-arrow i::before {
  left: 10px; top: 10px; width: 18px; height: 18px; border: 0;
  background: currentColor; transform: none;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 12h14M14 7l5 5-5 5' fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 12h14M14 7l5 5-5 5' fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
}
.btn-arrow i::after { display: none; }
.btn-arrow:hover i { color: var(--blue); }
.dark .btn-arrow i, .solution-home .btn-arrow i, .business-home .btn-arrow i { color: var(--ink); }
.swiper-button-next .swiper-navigation-icon,
.swiper-button-prev .swiper-navigation-icon { display: none !important; }

.page-hero { position: relative; height: 619px; color: #fff; overflow: hidden; background: #0a223a; }
.page-hero .hero-bg { position: absolute; inset: 0; background-position: center; background-size: cover; transform: scale(1.03); animation: heroIn 1.8s var(--ease) forwards; }
.page-hero::before { content: ""; position: absolute; z-index: 1; inset: 0; background: linear-gradient(90deg, rgba(2,13,29,.75), rgba(2,13,29,.12) 70%), linear-gradient(0deg, rgba(3,18,38,.4), transparent 55%); }
.page-hero .container { position: relative; z-index: 2; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; padding-bottom: 76px; }
.hero-kicker { margin-bottom: 14px; color: var(--yellow); font-size: 13px; letter-spacing: .28em; text-transform: uppercase; }
.page-hero h1 { margin: 0; font-size: clamp(46px, 6vw, 88px); line-height: .95; font-weight: 500; letter-spacing: -.04em; }
.page-hero p { max-width: 620px; margin: 20px 0 0; color: rgba(255,255,255,.75); font-size: 16px; line-height: 1.8; }
.hero-index { position: absolute; z-index: 2; right: 4vw; bottom: 70px; font-size: 84px; line-height: 1; font-weight: 200; color: rgba(255,255,255,.12); }
@keyframes heroIn { to { transform: scale(1); } }

.page-tabs { position: sticky; z-index: 100; top: var(--header-h); height: 62px; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.page-tabs .container { height: 100%; display: flex; align-items: center; gap: 44px; overflow-x: auto; scrollbar-width: none; }
.page-tabs a { height: 100%; display: flex; align-items: center; position: relative; white-space: nowrap; color: #526176; font-size: 14px; }
.page-tabs a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: var(--blue); transform: scaleX(0); transition: .25s; }
.page-tabs a:hover, .page-tabs a.active { color: var(--blue); }
.page-tabs a:hover::after, .page-tabs a.active::after { transform: scaleX(1); }

.site-footer { position: relative; color: #c6d0dc; background: #071523; overflow: hidden; }
.site-footer::before { content: "ZHI XING HE YI"; position: absolute; right: -1vw; bottom: -4vw; color: rgba(255,255,255,.025); font-size: 11vw; font-weight: 800; white-space: nowrap; }
.footer-main { position: relative; z-index: 1; display: grid; grid-template-columns: 1.35fr 2fr; gap: 9vw; padding: 88px 0 70px; }
.footer-brand .brand { color: #fff; }
.footer-brand .brand-logo { width: 205px; height: 74px; filter: none; }
.footer-brand p { max-width: 430px; margin: 28px 0; color: #718096; line-height: 1.85; }
.footer-contact { color: #fff; font-size: 25px; }
.footer-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.footer-col h4 { margin: 4px 0 24px; color: #fff; font-size: 15px; font-weight: 500; }
.footer-col a { display: block; margin: 13px 0; color: #748399; font-size: 13px; transition: .2s; }
.footer-col a:hover { color: var(--yellow); transform: translateX(4px); }
.footer-bottom { position: relative; z-index: 1; display: flex; justify-content: space-between; gap: 25px; padding: 22px 0 30px; border-top: 1px solid rgba(255,255,255,.08); color: #59687b; font-size: 12px; }
.back-top { position: fixed; z-index: 800; right: 30px; bottom: 30px; width: 48px; height: 48px; padding: 0; color: #fff; border: 0; border-radius: 50%; background: var(--blue); box-shadow: 0 12px 28px rgba(7,93,255,.3); opacity: 0; pointer-events: none; transform: translateY(12px); transition: .25s; cursor: pointer; }
.back-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-top::before { content: ""; position: absolute; left: 18px; top: 20px; width: 10px; height: 10px; border: solid currentColor; border-width: 1.5px 0 0 1.5px; transform: rotate(45deg); }
.back-top::after { content: ""; position: absolute; left: 23px; top: 17px; width: 1.5px; height: 17px; background: currentColor; }
.back-top:hover { transform: translateY(-4px); background: #064fd3; }

.reveal-line { overflow: hidden; }
.reveal-line > span { display: block; transform: translateY(110%); transition: transform .85s var(--ease); }
.swiper-slide-active .reveal-line > span, .aos-animate .reveal-line > span { transform: translateY(0); }

@media (max-width: 1120px) {
  :root { --header-h: 72px; }
  .brand, .header-tools { min-width: auto; }
  .brand-name { font-size: 18px; }
  .brand-en { display: none; }
  .nav-list { gap: 24px; }
  .header-tools { margin-left: 25px; }
  .footer-main { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .container, .container.narrow { width: calc(100% - 40px); }
  .header-inner { padding: 0 20px; }
  .brand { position: relative; z-index: 3; }
  .brand { min-width: 150px; }
  .brand-logo { width: 138px; height: 48px; }
  .brand-mark { width: 35px; transform: scale(.84); transform-origin: left center; margin-right: -5px; }
  .main-nav { position: fixed; inset: 0; display: block; padding: 105px 25px 35px; color: #fff; background: #071523; opacity: 0; visibility: hidden; transform: translateY(-20px); transition: .35s var(--ease); overflow-y: auto; }
  .menu-open .main-nav { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav-list { display: block; height: auto; }
  .nav-item { display: block; height: auto; border-bottom: 1px solid rgba(255,255,255,.1); }
  .nav-link { display: block; padding: 18px 0; font-size: 20px; }
  .nav-link::after { display: none; }
  .dropdown { position: static; width: 100%; padding: 0 0 10px 14px; color: #fff; background: none; box-shadow: none; opacity: 1; visibility: visible; transform: none; }
  .dropdown a { display: inline-block; width: 48%; padding: 8px 0; color: #8290a1; }
  .dropdown a:hover { padding-left: 0; background: none; }
  .header-tools .lang, .header-tools .search-icon { display: none; }
  .menu-toggle { display: block; position: relative; z-index: 3; }
  .section-head { display: block; margin-bottom: 35px; }
  .page-hero { height: 500px; }
  .page-hero .container { padding-bottom: 55px; }
  .page-tabs { top: 72px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .section-title { font-size: 34px; }
  .section-desc { font-size: 14px; }
  .page-hero { height: 440px; }
  .page-hero h1 { font-size: 44px; }
  .hero-index { display: none; }
  .page-tabs .container { gap: 28px; }
  .footer-main { padding: 65px 0 50px; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 15px; }
  .footer-bottom { display: block; line-height: 1.8; }
}