:root {
  --navy-950: #03112c;
  --navy-900: #071b3f;
  --navy-850: #0a2450;
  --navy-800: #0c2c63;
  --blue-700: #1554c0;
  --blue-600: #2470e9;
  --blue-500: #4a91ff;
  --gold-600: #d2a34a;
  --gold-500: #edc978;
  --gold-300: #ffe6a6;
  --ink: #102445;
  --muted: #5e708c;
  --line: rgba(15, 61, 133, .12);
  --paper: #f6f9ff;
  --white: #ffffff;
  --shadow: 0 30px 70px rgba(5, 34, 78, .15);
  --radius-lg: 28px;
  --radius-md: 20px;
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.nav-open { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
::selection { background: var(--gold-500); color: var(--navy-950); }

.container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
.section { padding: 110px 0; position: relative; }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--blue-600);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .18em;
  margin-bottom: 18px;
}
.section-label::before { content: ""; width: 32px; height: 2px; background: currentColor; }
.section-label.gold { color: var(--gold-500); }
.section-heading { margin-bottom: 54px; max-width: 760px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.section-heading.center .section-label { justify-content: center; }
.section-heading h2,
.section-copy h2,
.process-copy h2,
.conversion-copy h2,
.cases-copy h2,
.contact-copy h2 {
  margin: 0;
  font-family: "STSong", "SimSun", serif;
  font-size: clamp(36px, 5vw, 62px);
  line-height: 1.16;
  letter-spacing: -.035em;
}
.section-heading p,
.section-copy .lead,
.process-copy p,
.conversion-copy p,
.cases-copy p,
.contact-copy p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
  margin: 24px 0 0;
}
.center { text-align: center; }

.top-progress { position: fixed; inset: 0 auto auto 0; height: 3px; width: 0; z-index: 1000; background: linear-gradient(90deg, var(--gold-600), var(--gold-300)); }
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.site-header.scrolled { background: rgba(4, 18, 48, .92); backdrop-filter: blur(18px); border-color: rgba(255,255,255,.09); box-shadow: 0 14px 36px rgba(0,0,0,.18); }
.nav-wrap { height: 78px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: white; font-weight: 800; letter-spacing: .04em; }
.brand-mark { width: 34px; height: 34px; border: 1px solid rgba(244, 208, 126, .7); border-radius: 9px; display: inline-grid; place-items: center; color: var(--gold-500); background: linear-gradient(145deg, rgba(255,255,255,.12), rgba(255,255,255,.02)); box-shadow: inset 0 0 20px rgba(255,219,144,.08); }
.brand-text { font-size: 20px; }
.nav { display: flex; align-items: center; gap: 30px; color: rgba(255,255,255,.78); font-size: 14px; }
.nav a { position: relative; transition: color .2s ease; }
.nav a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -10px; height: 1px; background: var(--gold-500); transition: right .25s ease; }
.nav a:hover { color: white; }
.nav a:hover::after { right: 0; }
.nav-cta { padding: 11px 20px; border: 1px solid rgba(238, 201, 118, .75); border-radius: 999px; color: var(--gold-300); }
.nav-toggle { display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 10px; }
.nav-toggle span { display: block; height: 2px; background: white; margin: 6px 0; transition: transform .25s ease, opacity .25s ease; }

.hero {
  min-height: 820px;
  padding: 150px 0 56px;
  position: relative;
  overflow: hidden;
  color: white;
  background:
    radial-gradient(circle at 73% 28%, rgba(45, 108, 218, .28), transparent 28%),
    linear-gradient(108deg, var(--navy-950) 0%, #061b45 46%, #092557 100%);
}
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 140px; background: linear-gradient(to top, rgba(3,17,44,.96), transparent); }
.hero-city { position: absolute; inset: 0 0 0 43%; background: url("assets/hero-city.webp") center right / cover no-repeat; opacity: .75; -webkit-mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,.45) 16%, #000 48%); mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,.45) 16%, #000 48%); filter: saturate(1.05) contrast(1.05); }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(110,160,240,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(110,160,240,.055) 1px, transparent 1px); background-size: 54px 54px; -webkit-mask-image: radial-gradient(circle at 50% 36%, black, transparent 72%); mask-image: radial-gradient(circle at 50% 36%, black, transparent 72%); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(80px); opacity: .28; }
.hero-glow-one { width: 280px; height: 280px; background: #2d79ff; left: -100px; top: 120px; }
.hero-glow-two { width: 220px; height: 220px; background: #e4b550; right: 9%; bottom: 7%; opacity: .15; }
.hero-content { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr); align-items: center; gap: 72px; min-height: 520px; }
.hero-copy { max-width: 770px; }
.eyebrow { display: inline-flex; align-items: center; gap: 12px; color: rgba(255,255,255,.78); font-size: 14px; letter-spacing: .16em; }
.eyebrow span { width: 44px; height: 1px; background: var(--gold-500); }
.hero h1 { margin: 24px 0 24px; font-family: "STKaiti", "KaiTi", serif; font-size: clamp(54px, 7vw, 90px); line-height: 1.04; font-weight: 700; letter-spacing: -.05em; text-shadow: 0 8px 30px rgba(0,0,0,.28); }
.hero h1 em { font-style: normal; color: var(--gold-300); background: linear-gradient(180deg, #fff5c9, #d9a64f); -webkit-background-clip: text; color: transparent; }
.hero-copy > p { max-width: 690px; color: rgba(255,255,255,.74); line-height: 1.9; font-size: 17px; }
.hero-actions { display: flex; gap: 14px; margin: 34px 0 30px; flex-wrap: wrap; }
.btn { border: 0; border-radius: 999px; padding: 15px 25px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: var(--navy-950); background: linear-gradient(120deg, var(--gold-300), var(--gold-600)); box-shadow: 0 14px 38px rgba(207, 158, 62, .26); }
.btn-primary:hover { box-shadow: 0 18px 45px rgba(207, 158, 62, .38); }
.btn-ghost { color: white; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.22); backdrop-filter: blur(10px); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-tags span { padding: 8px 13px; border: 1px solid rgba(244, 211, 137, .35); border-radius: 999px; color: rgba(255,255,255,.76); font-size: 13px; background: rgba(4,20,52,.3); }
.hero-panel { position: relative; align-self: center; padding: 30px; border-radius: 24px; border: 1px solid rgba(255,255,255,.17); background: linear-gradient(145deg, rgba(10,39,91,.8), rgba(4,17,44,.58)); backdrop-filter: blur(18px); box-shadow: 0 32px 70px rgba(0,0,0,.28), inset 0 1px rgba(255,255,255,.1); overflow: hidden; }
.hero-panel::before { content: ""; position: absolute; width: 130px; height: 130px; background: rgba(46,121,255,.22); filter: blur(38px); right: -30px; top: -40px; }
.panel-kicker { color: var(--gold-500); letter-spacing: .22em; font-size: 11px; font-weight: 800; }
.hero-panel h2 { font-size: 25px; margin: 10px 0 22px; font-family: "STSong", serif; }
.panel-flow { display: grid; gap: 9px; }
.panel-flow div { display: flex; align-items: center; gap: 13px; padding: 12px 14px; border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.045); border-radius: 12px; color: rgba(255,255,255,.84); font-size: 13px; }
.panel-flow b { width: 29px; height: 29px; display: grid; place-items: center; border-radius: 9px; color: var(--gold-300); background: rgba(233,191,102,.12); font-size: 11px; }
.panel-line { display: flex; align-items: center; gap: 10px; margin: 22px 0 12px; }
.panel-line span { height: 1px; background: rgba(255,255,255,.12); flex: 1; }
.panel-line i { width: 7px; height: 7px; border: 1px solid var(--gold-500); transform: rotate(45deg); }
.hero-panel > p { margin: 0; font-size: 12px; color: rgba(255,255,255,.54); text-align: center; }
.hero-metrics { position: relative; z-index: 3; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(255,255,255,.11); padding-top: 28px; }
.hero-metrics div { padding: 0 28px; border-right: 1px solid rgba(255,255,255,.1); }
.hero-metrics div:first-child { padding-left: 0; }
.hero-metrics div:last-child { border-right: 0; }
.hero-metrics strong { display: block; color: var(--gold-300); font-size: 30px; font-family: Georgia, serif; }
.hero-metrics span { color: rgba(255,255,255,.54); font-size: 13px; }

.about { background: linear-gradient(180deg, #fff 0%, #f7faff 100%); overflow: hidden; }
.about::before { content: ""; position: absolute; width: 520px; height: 520px; border-radius: 50%; background: rgba(77,144,255,.08); filter: blur(20px); left: -260px; top: 180px; }
.split-layout { display: grid; grid-template-columns: .92fr 1.08fr; gap: 76px; align-items: center; position: relative; }
.split-layout.reverse { grid-template-columns: 1.08fr .92fr; }
.feature-list { margin-top: 32px; display: grid; gap: 12px; }
.feature-list div { display: grid; grid-template-columns: 92px 1fr; align-items: start; gap: 12px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.feature-list b { color: var(--blue-700); }
.feature-list span { color: var(--muted); line-height: 1.7; font-size: 14px; }
.media-card { margin: 0; background: white; border-radius: var(--radius-lg); padding: 12px; box-shadow: var(--shadow); border: 1px solid rgba(18,64,137,.1); }
.media-card img { width: 100%; border-radius: 19px; }
.media-card figcaption { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 14px 10px 6px; color: var(--muted); font-size: 13px; }
.timeline { margin-top: 80px; display: grid; grid-template-columns: repeat(5, 1fr); position: relative; }
.timeline::before { content: ""; position: absolute; left: 4%; right: 4%; top: 15px; height: 1px; background: linear-gradient(90deg, transparent, var(--gold-600), transparent); }
.timeline article { position: relative; text-align: center; padding: 0 10px; }
.timeline article::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--gold-500); border: 4px solid #fff5d9; box-shadow: 0 0 0 3px rgba(213,164,70,.18); display: block; margin: 7px auto 24px; position: relative; z-index: 1; }
.timeline span { color: var(--blue-700); font-family: Georgia, serif; font-size: 24px; font-weight: 700; }
.timeline p { color: var(--muted); font-size: 14px; line-height: 1.7; }

.system { color: white; background: radial-gradient(circle at center, #0a397e 0%, #071f4a 42%, #03122f 100%); overflow: hidden; }
.system::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(105,164,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(105,164,255,.045) 1px, transparent 1px); background-size: 44px 44px; opacity: .7; }
.system .section-heading { position: relative; z-index: 1; }
.system .section-heading p { color: rgba(255,255,255,.62); }
.loop-wrap { height: 600px; position: relative; display: grid; place-items: center; }
.loop-wrap::before,
.loop-wrap::after { content: ""; position: absolute; border-radius: 50%; border: 1px solid rgba(119,171,255,.22); }
.loop-wrap::before { width: 570px; height: 370px; }
.loop-wrap::after { width: 750px; height: 500px; border-style: dashed; border-color: rgba(234,195,111,.2); animation: spin 42s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loop-center { width: 245px; height: 245px; border-radius: 50%; display: grid; place-content: center; text-align: center; position: relative; z-index: 2; background: radial-gradient(circle at 35% 30%, #164e9a, #061d49 72%); border: 1px solid rgba(255,220,145,.72); box-shadow: 0 0 0 10px rgba(255,255,255,.035), 0 0 60px rgba(38,118,255,.3), inset 0 0 38px rgba(79,145,255,.22); }
.loop-center span { color: var(--gold-300); font-size: 14px; letter-spacing: .12em; }
.loop-center strong { font-family: "STSong", serif; font-size: 34px; margin: 8px 0; }
.loop-center small { color: rgba(255,255,255,.48); }
.loop-item { position: absolute; width: 144px; height: 94px; border-radius: 18px; display: flex; align-items: center; gap: 11px; padding: 14px; background: linear-gradient(145deg, rgba(31,95,183,.72), rgba(8,33,76,.92)); border: 1px solid rgba(255,255,255,.15); box-shadow: 0 20px 45px rgba(0,0,0,.2); backdrop-filter: blur(12px); z-index: 2; }
.loop-item b { width: 36px; height: 36px; border-radius: 12px; display: grid; place-items: center; color: var(--gold-300); background: rgba(255,213,128,.1); font-size: 12px; }
.loop-item span { font-weight: 700; }
.i1 { transform: translate(0, -255px); }
.i2 { transform: translate(270px, -182px); }
.i3 { transform: translate(360px, 0); }
.i4 { transform: translate(270px, 182px); }
.i5 { transform: translate(0, 255px); }
.i6 { transform: translate(-270px, 182px); }
.i7 { transform: translate(-360px, 0); }
.i8 { transform: translate(-270px, -182px); }
.system-note { position: relative; z-index: 1; display: flex; align-items: center; gap: 24px; justify-content: center; color: var(--gold-300); font-family: "STSong", serif; font-size: 24px; }
.system-note span { width: 120px; height: 1px; background: linear-gradient(90deg, transparent, var(--gold-500)); }
.system-note span:last-child { transform: scaleX(-1); }

.services { background: #fff; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card { position: relative; min-height: 340px; padding: 34px; border: 1px solid var(--line); border-radius: 24px; background: linear-gradient(160deg, #fff, #f7faff); overflow: hidden; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.service-card::before { content: ""; position: absolute; width: 160px; height: 160px; border-radius: 50%; background: rgba(46,113,233,.07); right: -70px; top: -70px; transition: transform .3s ease; }
.service-card:hover { transform: translateY(-8px); box-shadow: 0 24px 55px rgba(10,54,116,.13); border-color: rgba(33,105,225,.24); }
.service-card:hover::before { transform: scale(1.25); }
.service-no { color: var(--blue-600); font-family: Georgia, serif; font-size: 14px; letter-spacing: .12em; }
.service-card h3 { margin: 17px 0 14px; font-family: "STSong", serif; font-size: 30px; }
.service-card p { margin: 0; color: var(--muted); line-height: 1.8; font-size: 14px; }
.service-card ul { list-style: none; margin: 25px 0 0; padding: 0; display: flex; gap: 8px; flex-wrap: wrap; }
.service-card li { padding: 7px 10px; border-radius: 999px; background: #edf4ff; color: #275ca9; font-size: 12px; }

.process { color: white; background: linear-gradient(120deg, #03132f, #0a2b61 52%, #0a3b84); overflow: hidden; }
.process::before { content: ""; position: absolute; width: 800px; height: 800px; border: 1px solid rgba(255,255,255,.08); border-radius: 50%; right: -320px; top: -270px; box-shadow: 0 0 0 100px rgba(255,255,255,.02), 0 0 0 200px rgba(255,255,255,.012); }
.process-wrap { display: grid; grid-template-columns: .78fr 1.22fr; gap: 80px; align-items: center; position: relative; }
.process-copy p { color: rgba(255,255,255,.61); }
.text-link { margin-top: 28px; display: inline-flex; gap: 12px; color: var(--gold-300); font-weight: 700; }
.text-link span { transition: transform .2s ease; }
.text-link:hover span { transform: translateX(5px); }
.phase-list { display: grid; gap: 13px; }
.phase-list article { display: grid; grid-template-columns: 62px 1fr; gap: 18px; align-items: center; padding: 22px 24px; border-radius: 18px; background: rgba(255,255,255,.065); border: 1px solid rgba(255,255,255,.1); backdrop-filter: blur(10px); }
.phase-list b { width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; color: var(--gold-300); background: rgba(232,192,107,.12); font-family: Georgia, serif; }
.phase-list h3 { margin: 0 0 6px; font-size: 20px; }
.phase-list p { margin: 0; color: rgba(255,255,255,.58); font-size: 13px; line-height: 1.7; }

.technology { background: #f6f9ff; }
.tech-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 22px; }
.tech-main,
.tech-card { margin: 0; background: white; border-radius: 24px; padding: 12px; border: 1px solid var(--line); box-shadow: 0 22px 55px rgba(10,48,104,.1); }
.tech-main img,
.tech-card img { border-radius: 17px; width: 100%; }
.tech-main figcaption,
.tech-card figcaption { padding: 18px 12px 10px; display: grid; gap: 6px; }
.tech-main figcaption strong,
.tech-card figcaption strong { font-size: 20px; }
.tech-main figcaption span,
.tech-card figcaption span { color: var(--muted); font-size: 13px; }
.tech-side { display: grid; gap: 22px; }
.tech-points { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.tech-points div { padding: 20px; border-radius: 18px; background: white; border: 1px solid var(--line); }
.tech-points b { display: block; color: var(--blue-700); margin-bottom: 7px; }
.tech-points span { color: var(--muted); font-size: 12px; line-height: 1.6; }

.content-section { background: white; }
.step-chain { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 30px 0; }
.step-chain span { padding: 9px 13px; background: var(--navy-900); color: white; border-radius: 10px; font-size: 13px; }
.step-chain i { color: var(--gold-600); font-style: normal; }
.mini-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mini-cards div { padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: #f8fbff; }
.mini-cards b { display: block; margin-bottom: 6px; color: var(--blue-700); }
.mini-cards span { color: var(--muted); font-size: 12px; }

.conversion { background: linear-gradient(180deg, #071a3d, #03122d); color: white; overflow: hidden; }
.conversion::after { content: ""; position: absolute; width: 430px; height: 430px; border-radius: 50%; background: rgba(33,108,236,.18); filter: blur(70px); right: 5%; top: 10%; }
.conversion-grid { display: grid; grid-template-columns: .72fr 1.28fr; align-items: center; gap: 60px; position: relative; z-index: 1; }
.conversion-copy p { color: rgba(255,255,255,.6); }
.conversion-path { display: grid; gap: 9px; margin-top: 30px; }
.conversion-path span { display: block; padding: 12px 16px; border-left: 2px solid var(--gold-500); background: rgba(255,255,255,.055); border-radius: 0 10px 10px 0; }
.conversion-path i { width: 1px; height: 10px; background: rgba(255,255,255,.18); margin-left: 20px; }
.conversion-visual { margin: 0; padding: 11px; border-radius: 24px; border: 1px solid rgba(255,255,255,.14); background: rgba(255,255,255,.06); box-shadow: 0 30px 70px rgba(0,0,0,.32); }
.conversion-visual img { border-radius: 17px; }

.industries { background: #f6f9ff; }
.industry-cloud { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.industry-cloud span { min-width: 130px; text-align: center; padding: 18px 24px; border-radius: 16px; background: white; border: 1px solid var(--line); color: var(--blue-700); font-weight: 700; box-shadow: 0 10px 25px rgba(8,52,115,.06); }
.industry-cloud span:nth-child(2n) { transform: translateY(14px); }

.cases { background: #071a3e; color: white; }
.cases-grid { display: grid; grid-template-columns: .76fr 1.24fr; gap: 66px; align-items: center; }
.cases-copy p { color: rgba(255,255,255,.59); }
.case-brands { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.case-brands span { padding: 9px 13px; border: 1px solid rgba(255,255,255,.13); border-radius: 999px; color: rgba(255,255,255,.75); font-size: 13px; }
.cases-visual { margin: 0; padding: 10px; border-radius: 24px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); }
.cases-visual img { border-radius: 17px; }
.cases-visual figcaption { padding: 13px 10px 5px; color: rgba(255,255,255,.5); font-size: 12px; }

.contact { position: relative; padding: 120px 0; color: white; background: radial-gradient(circle at 25% 45%, #0f458f 0%, #071d45 36%, #031128 76%); overflow: hidden; }
.contact::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px); background-size: 48px 48px; }
.contact-light { position: absolute; width: 540px; height: 540px; border-radius: 50%; border: 1px solid rgba(236,201,120,.18); left: -180px; top: -130px; box-shadow: 0 0 0 90px rgba(255,255,255,.018), 0 0 0 180px rgba(255,255,255,.01); }
.contact-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 70px; align-items: center; position: relative; z-index: 1; }
.contact-copy p { color: rgba(255,255,255,.62); }
.contact-points { display: flex; gap: 10px; margin-top: 28px; flex-wrap: wrap; }
.contact-points span { padding: 9px 13px; border-radius: 999px; border: 1px solid rgba(255,255,255,.14); color: var(--gold-300); font-size: 13px; }
.contact-card {
  padding: 34px;
  border-radius: 26px;
  background: rgba(255,255,255,.97);
  color: var(--ink);
  box-shadow: 0 35px 80px rgba(0,0,0,.3);
  border: 1px solid rgba(255,255,255,.72);
}
.contact-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 24px;
  border-bottom: 1px solid #e2e9f3;
}
.contact-card-head div { display: grid; gap: 6px; }
.contact-card-head span {
  color: var(--blue-600);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .18em;
}
.contact-card-head strong {
  color: var(--navy-900);
  font-family: "STSong", "SimSun", serif;
  font-size: 28px;
}
.contact-card-head i {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: var(--gold-600);
  border: 1px solid rgba(210,163,74,.38);
  background: linear-gradient(145deg, #fffaf0, #f3e4bc);
  font-style: normal;
  font-size: 21px;
}
.contact-card-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 180px;
  gap: 34px;
  align-items: stretch;
  padding: 28px 0 22px;
}
.contact-info-list { display: grid; gap: 12px; }
.contact-info-item {
  min-height: 76px;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: center;
  gap: 15px;
  padding: 12px 16px;
  border-radius: 15px;
  background: #f6f9fe;
  border: 1px solid #e3eaf4;
}
.contact-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: var(--gold-600);
  background: linear-gradient(145deg, #fff8e7, #f1e0b4);
  font-size: 13px;
  font-weight: 800;
}
.contact-info-item > div { min-width: 0; display: grid; gap: 7px; }
.contact-info-item small,
.wechat-block small {
  color: #71829c;
  font-size: 12px;
  font-weight: 700;
}
.contact-info-item strong {
  min-height: 24px;
  color: var(--navy-900);
  font-size: 17px;
}
.contact-blank {
  display: block;
  width: min(100%, 320px);
  border-bottom: 1px solid #b9c8dc;
}
.wechat-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px;
  border-radius: 18px;
  background: #f6f9fe;
  border: 1px solid #e3eaf4;
}
.qr-placeholder {
  width: 138px;
  aspect-ratio: 1;
  border-radius: 10px;
  background: white;
  border: 1px dashed #9eafc7;
  box-shadow: inset 0 0 0 8px #f8faff;
}
.contact-card-foot {
  padding-top: 18px;
  border-top: 1px solid #e2e9f3;
  color: #73839b;
  font-size: 12px;
  text-align: center;
  letter-spacing: .08em;
}

.site-footer { color: rgba(255,255,255,.68); background: #020b1d; }
.footer-top { min-height: 120px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; border-bottom: 1px solid rgba(255,255,255,.08); gap: 30px; }
.footer-top p { text-align: center; }
.footer-top > a:last-child { justify-self: end; color: var(--gold-300); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding: 24px 0; font-size: 12px; color: rgba(255,255,255,.38); }
.back-top { position: fixed; right: 24px; bottom: 24px; width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255,255,255,.17); background: rgba(4,22,53,.88); color: white; z-index: 50; opacity: 0; transform: translateY(10px); pointer-events: none; transition: opacity .2s ease, transform .2s ease; box-shadow: 0 10px 30px rgba(0,0,0,.2); }
.back-top.show { opacity: 1; transform: none; pointer-events: auto; }
.toast { position: fixed; left: 50%; bottom: 28px; z-index: 200; transform: translate(-50%, 18px); padding: 12px 18px; border-radius: 999px; color: white; background: rgba(4,24,58,.95); box-shadow: 0 16px 40px rgba(0,0,0,.25); opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .2s ease; font-size: 13px; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.reveal { opacity: 1; transform: none; }
html.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
html.js .reveal.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: .12s; }
.delay-2 { transition-delay: .22s; }

@media (max-width: 1050px) {
  .hero-content { grid-template-columns: 1fr; gap: 35px; }
  .hero-panel { max-width: 620px; }
  .hero { padding-top: 130px; }
  .hero-city { left: 28%; opacity: .48; }
  .split-layout,
  .split-layout.reverse,
  .process-wrap,
  .conversion-grid,
  .cases-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: 1fr; }
  .loop-wrap { transform: scale(.86); margin: -40px 0; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-top p { display: none; }
}

@media (max-width: 820px) {
  .container { width: min(100% - 32px, var(--container)); }
  .section { padding: 82px 0; }
  .nav-toggle { display: block; position: relative; z-index: 2; }
  .nav { position: fixed; inset: 0; display: flex; flex-direction: column; justify-content: center; gap: 26px; background: rgba(2,13,34,.98); transform: translateX(100%); transition: transform .3s ease; font-size: 18px; }
  .nav.open { transform: translateX(0); }
  .nav-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  .hero { min-height: auto; padding-bottom: 50px; }
  .hero-city { inset: 0; opacity: .3; -webkit-mask-image: linear-gradient(to top, transparent, #000 26%, #000); mask-image: linear-gradient(to top, transparent, #000 26%, #000); }
  .hero h1 { font-size: clamp(48px, 13vw, 70px); }
  .hero-content { min-height: auto; }
  .hero-panel { display: none; }
  .hero-metrics { grid-template-columns: repeat(2, 1fr); row-gap: 22px; }
  .hero-metrics div:nth-child(2) { border-right: 0; }
  .hero-metrics div:nth-child(3) { padding-left: 0; }
  .timeline { grid-template-columns: 1fr; gap: 14px; margin-top: 55px; }
  .timeline::before { left: 14px; top: 14px; bottom: 14px; width: 1px; height: auto; right: auto; }
  .timeline article { display: grid; grid-template-columns: 40px 130px 1fr; align-items: center; text-align: left; padding: 0; }
  .timeline article::before { margin: 0 0 0 8px; }
  .timeline p { margin: 0; }
  .loop-wrap { height: auto; transform: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 30px 0 0; }
  .loop-wrap::before,
  .loop-wrap::after { display: none; }
  .loop-center { grid-column: 1 / -1; width: 210px; height: 210px; margin: 0 auto 14px; }
  .loop-item { position: static; transform: none !important; width: auto; height: 80px; }
  .system-note { font-size: 19px; }
  .system-note span { width: 40px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: auto; }
  .contact-card-body { grid-template-columns: minmax(0, 1fr) 170px; gap: 22px; }
}

@media (max-width: 560px) {
  .container { width: min(100% - 24px, var(--container)); }
  .nav-wrap { height: 68px; }
  .brand-text { font-size: 18px; }
  .hero { padding-top: 115px; }
  .hero h1 { margin-top: 18px; }
  .hero-copy > p { font-size: 15px; }
  .hero-actions { display: grid; }
  .btn { width: 100%; }
  .hero-tags span { font-size: 12px; }
  .hero-metrics { grid-template-columns: 1fr 1fr; }
  .hero-metrics div { padding: 0 12px; }
  .section-heading h2,
  .section-copy h2,
  .process-copy h2,
  .conversion-copy h2,
  .cases-copy h2,
  .contact-copy h2 { font-size: 38px; }
  .feature-list div { grid-template-columns: 1fr; gap: 7px; }
  .timeline article { grid-template-columns: 36px 110px 1fr; }
  .timeline span { font-size: 18px; }
  .timeline p { font-size: 12px; }
  .loop-item { padding: 11px; gap: 7px; font-size: 13px; }
  .loop-item b { width: 30px; height: 30px; }
  .mini-cards,
  .tech-points { grid-template-columns: 1fr; }
  .step-chain i { display: none; }
  .step-chain span { flex: 1 0 45%; text-align: center; }
  .industry-cloud span { min-width: calc(50% - 10px); padding: 15px 10px; }
  .industry-cloud span:nth-child(2n) { transform: none; }
  .contact-card { padding: 24px 18px; }
  .contact-card-body { grid-template-columns: 1fr; }
  .wechat-block { align-items: flex-start; }
  .footer-top { grid-template-columns: 1fr; padding: 28px 0; gap: 20px; }
  .footer-top > a:last-child { justify-self: start; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html.js .reveal { opacity: 1; transform: none; }
}


/* 高端横向联系我们底栏 */
.contact-premium{
    padding:70px 0;
    background:
    radial-gradient(circle at 20% 50%,rgba(54,124,255,.18),transparent 35%),
    linear-gradient(135deg,#06142f,#0b2552);
    overflow:hidden;
}
.premium-contact-bar{
    display:flex;
    align-items:center;
    gap:24px;
    padding:35px 40px;
    border:1px solid rgba(212,169,70,.35);
    border-radius:26px;
    background:rgba(255,255,255,.06);
    backdrop-filter:blur(16px);
}
.premium-contact-brand{
    flex:1.2;
}
.premium-contact-brand h2{
    font-size:42px;
    margin:12px 0;
}
.premium-contact-brand p{
    color:#b9c8e8;
}
.premium-contact-item{
    min-width:150px;
    display:flex;
    gap:14px;
    align-items:center;
    padding:20px;
    border-left:1px solid rgba(255,255,255,.12);
}
.premium-contact-item small,
.premium-wechat small{
    display:block;
    color:#d6b45c;
    margin-bottom:8px;
}
.premium-contact-item strong{
    font-size:18px;
}
.premium-icon{
    color:#d6b45c;
    font-size:13px;
}
.premium-wechat{
    display:flex;
    align-items:center;
    gap:15px;
    padding-left:25px;
}
.premium-wechat strong,
.premium-wechat span{
    display:block;
}
.premium-wechat span{
    color:white;
    margin:8px 0;
}
.premium-wechat small{
    color:#b9c8e8;
}
.premium-wechat .qr-placeholder{
    width:72px;
    height:72px;
    border:1px dashed #d6b45c;
    background:rgba(255,255,255,.08);
}
@media(max-width:1100px){
 .premium-contact-bar{flex-direction:column;align-items:flex-start}
 .premium-contact-item{border-left:none;border-top:1px solid rgba(255,255,255,.12);width:100%}
}

/* Hybrid premium motion */
.hybrid-card{
background:rgba(255,255,255,.06);
backdrop-filter:blur(14px);
border:1px solid rgba(212,169,70,.25);
transition:.45s ease;
}
.hybrid-card:hover{
transform:translateY(-8px);
box-shadow:0 25px 60px rgba(0,0,0,.28);
}
.reveal-animation{
animation:fadeUp .8s ease both;
}
@keyframes fadeUp{
from{opacity:0;transform:translateY(30px)}
to{opacity:1;transform:none}
}