:root{
  --bg:#eef6ff;
  --bg-deep:#dcecff;
  --panel:#ffffffcc;
  --panel-strong:#ffffff;
  --line:rgba(55,137,255,.18);
  --line-strong:rgba(55,137,255,.34);
  --blue:#2388ff;
  --blue-deep:#0c4fb3;
  --blue-dark:#08295f;
  --cyan:#2ec8ff;
  --gold:#f6bf45;
  --text:#0a2a5a;
  --muted:#5f7698;
  --shadow:0 24px 60px rgba(34,104,197,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  font-family:Arial,"Microsoft YaHei",sans-serif;
  overflow-x:hidden;
  background:
    radial-gradient(circle at 10% 10%, rgba(103,184,255,.22), transparent 28%),
    radial-gradient(circle at 90% 18%, rgba(46,200,255,.14), transparent 24%),
    linear-gradient(180deg, #f7fbff 0%, #edf5ff 46%, #e8f1ff 100%);
}
#bg{position:fixed; inset:0; z-index:-1; opacity:.55}
main{max-width:1480px; margin:auto; position:relative}
.nav{
  position:sticky; top:0; z-index:20;
  height:86px;
  display:flex; align-items:center; justify-content:space-between;
  padding:0 4vw;
  background:rgba(255,255,255,.74);
  backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(34,104,197,.10);
  box-shadow:0 8px 28px rgba(34,104,197,.08);
}
.brand{display:flex; align-items:center; text-decoration:none}
.brand img{display:block; height:46px; width:auto; max-width:min(340px, 44vw)}
.nav nav{display:flex; gap:38px; align-items:center}
.nav nav a{color:var(--blue-dark); text-decoration:none; font-size:16px; font-weight:700; opacity:.92}
.nav nav a:hover{color:var(--blue)}
.nav-right{display:flex;align-items:center;gap:14px}
.lang-switch{display:flex;align-items:center;gap:4px;padding:4px;border:1px solid rgba(35,136,255,.18);border-radius:999px;background:rgba(255,255,255,.72)}
.lang-btn{appearance:none;border:0;background:transparent;color:var(--blue-dark);font-weight:800;padding:7px 10px;border-radius:999px;cursor:pointer;font-size:13px;line-height:1}
.lang-btn.active{background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;box-shadow:0 8px 18px rgba(35,136,255,.18)}
.nav-btn{
  appearance:none; border:0; cursor:pointer;
  padding:14px 24px; border-radius:14px;
  color:#fff; font-weight:800; font-size:15px;
  background:linear-gradient(135deg,var(--blue), var(--cyan));
  box-shadow:0 14px 28px rgba(35,136,255,.22);
}
.hero{
  display:grid; grid-template-columns:1.04fr .96fr; gap:34px; align-items:center;
  padding:56px 4vw 26px;
}
.hero-copy{
  padding:22px 0;
}
.eyebrow{
  margin:0 0 18px; color:var(--blue);
  letter-spacing:5px; text-transform:uppercase; font-size:15px; font-weight:700;
}
.hero h1{
  margin:0 0 18px;
  font-size:clamp(68px,8vw,146px); line-height:.88; letter-spacing:-4px; font-style:italic; font-weight:900;
  background:linear-gradient(180deg,#0b2b5e 0%, #1c69d4 58%, #67c9ff 100%);
  -webkit-background-clip:text; color:transparent;
  text-shadow:0 16px 34px rgba(36,111,211,.18);
}
.hero h1 span{
  background:linear-gradient(180deg,#113872 0%, #0a2a5a 100%);
  -webkit-background-clip:text; color:transparent;
}
.hero h2{margin:0 0 16px; font-size:clamp(26px,3.2vw,48px); letter-spacing:4px; color:var(--blue-dark)}
.hero h3{margin:0 0 18px; font-size:clamp(34px,4.4vw,62px); color:var(--blue-dark)}
.hero h3 b{color:var(--blue); font-style:italic}
.desc{max-width:720px; color:var(--muted); font-size:20px; line-height:1.9}
.hero-tags{display:flex; gap:12px; flex-wrap:wrap; margin:22px 0 0}
.hero-tags span{
  padding:10px 14px; border-radius:999px;
  background:rgba(255,255,255,.72); border:1px solid rgba(35,136,255,.20);
  color:var(--blue-deep); font-size:14px; font-weight:700;
  box-shadow:0 10px 22px rgba(34,104,197,.08)
}
.hero-actions{display:flex; gap:16px; flex-wrap:wrap; margin-top:34px}
.primary,.secondary{
  display:inline-flex; align-items:center; justify-content:center;
  min-height:56px; padding:0 28px; border-radius:16px; text-decoration:none; font-weight:800; font-size:17px;
}
.primary{background:linear-gradient(135deg,var(--blue),var(--cyan)); color:#fff; box-shadow:0 14px 26px rgba(35,136,255,.20)}
.secondary{background:rgba(255,255,255,.74); color:var(--blue-dark); border:1px solid rgba(35,136,255,.22)}
.hero-actions button.secondary{appearance:none; cursor:pointer; font-family:inherit}
.email-pill{
  display:inline-flex; align-items:center; gap:10px; margin-top:22px;
  padding:14px 18px; border-radius:16px; border:1px solid rgba(35,136,255,.18);
  background:rgba(255,255,255,.72); color:var(--blue-dark); font-size:16px; font-weight:700;
  box-shadow:var(--shadow); cursor:pointer;
}
.visual-panel{
  position:relative; min-height:680px; overflow:hidden; border-radius:28px;
  background:radial-gradient(circle at 50% 30%, rgba(104,193,255,.15), rgba(255,255,255,.88) 48%, rgba(235,245,255,.96) 100%);
  border:1px solid rgba(35,136,255,.18);
  box-shadow:var(--shadow), inset 0 0 100px rgba(70,160,255,.08);
}
.visual-panel:before{
  content:""; position:absolute; inset:14px; border-radius:22px;
  border:1px solid rgba(35,136,255,.12); pointer-events:none;
}
.hero-visual-image-wrap{display:flex; align-items:center; justify-content:center; padding:34px}
.hero-visual-image{
  width:100%; max-width:780px; height:auto; object-fit:contain; display:block;
  filter:drop-shadow(0 20px 40px rgba(35,136,255,.18));
}
.section{padding:52px 4vw 24px}
.section-card{
  margin:18px 4vw; border-radius:26px; border:1px solid rgba(35,136,255,.14);
  background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(248,251,255,.92));
  box-shadow:var(--shadow);
}
.features{
  display:grid; grid-template-columns:repeat(5,1fr); overflow:hidden;
}
.features article{padding:34px 24px; border-right:1px solid rgba(35,136,255,.10)}
.features article:last-child{border-right:0}
.features span{display:block; font-size:46px; color:var(--blue); text-shadow:0 10px 24px rgba(35,136,255,.18)}
h4{font-size:24px; margin:14px 0 8px; color:var(--blue-dark)}
.features p,.workflow p,.scene-cards p{color:var(--muted); line-height:1.8}
.stats{
  display:grid; grid-template-columns:repeat(4,1fr); text-align:center; padding:10px 20px;
  background:linear-gradient(135deg,#0e4cac,#2ec8ff);
  color:#fff; border:0; box-shadow:0 24px 60px rgba(18,88,190,.22);
}
.stats div{padding:22px 10px}
.stats strong{display:block; font-size:44px; margin-bottom:6px}
.stats span{color:rgba(255,255,255,.86)}
.section-title{text-align:center; margin-bottom:28px}
.section-title p{margin:0 0 10px; color:var(--blue); letter-spacing:4px; text-transform:uppercase; font-weight:800}
.section-title h2{margin:0 0 12px; font-size:44px; letter-spacing:4px; color:var(--blue-dark)}
.section-title span{color:var(--muted); font-size:16px}
.video-shell{position:relative; margin:0 auto; max-width:1120px; overflow:hidden}
.video-shell video{display:block; width:100%; height:auto; aspect-ratio:16/9; object-fit:cover; background:#dbeeff}
.video-shell:before{content:""; position:absolute; inset:0; border-radius:inherit; pointer-events:none; border:1px solid rgba(35,136,255,.18)}
.video-caption{
  position:absolute; left:20px; bottom:18px; display:flex; gap:10px; flex-wrap:wrap; align-items:center;
  padding:12px 16px; border-radius:14px; background:rgba(255,255,255,.80); border:1px solid rgba(35,136,255,.18);
  color:var(--blue-dark); backdrop-filter:blur(12px)
}
.video-caption span{color:var(--blue-deep)}
.workflow{
  display:grid; grid-template-columns:repeat(5,1fr); gap:16px;
}
.workflow article{
  padding:28px 22px; border-radius:22px; background:rgba(255,255,255,.88);
  border:1px solid rgba(35,136,255,.16); box-shadow:var(--shadow)
}
.workflow b{
  display:inline-flex; align-items:center; justify-content:center; width:44px; height:44px; border-radius:14px;
  background:linear-gradient(135deg,#0c4fb3,#2ec8ff); color:#fff; font-size:20px
}
.cards{display:grid; gap:20px; margin:0}
.scene-cards{grid-template-columns:repeat(3,1fr)}
.scene-cards article{
  overflow:hidden; border-radius:22px; background:rgba(255,255,255,.92);
  border:1px solid rgba(35,136,255,.16); box-shadow:var(--shadow); transition:.25s transform,.25s box-shadow
}
.scene-cards article:hover{transform:translateY(-6px); box-shadow:0 30px 60px rgba(34,104,197,.18)}
.scene-cards img{display:block; width:100%; aspect-ratio:16/10; object-fit:cover}
.scene-cards h4{margin:18px 18px 8px}
.scene-cards p{margin:0 18px 10px}
.scene-cards .scene-link{
  appearance:none; border:0; background:transparent; cursor:pointer;
  padding:0; margin:0 18px 18px; color:var(--blue); font-size:15px; font-weight:800
}
.contact{
  display:flex; align-items:center; justify-content:space-between; gap:20px;
  padding:38px 40px; margin-bottom:50px;
  background:linear-gradient(135deg,#0c4fb3,#1e95ff 70%, #65d2ff); color:#fff; border:0;
}
.contact p{margin:0 0 10px; letter-spacing:4px; text-transform:uppercase; color:rgba(255,255,255,.84); font-weight:800}
.contact h2{margin:0 0 10px; font-size:38px; color:#fff}
.contact span{color:rgba(255,255,255,.86)}
.contact-main-btn{
  appearance:none; border:0; cursor:pointer; white-space:nowrap;
  padding:18px 28px; border-radius:16px; background:#fff; color:var(--blue-deep); font-size:16px; font-weight:900;
  box-shadow:0 16px 32px rgba(9,53,120,.18)
}
footer{padding:6px 0 42px; text-align:center; color:#6e85a4}
button{font-family:inherit}
.nav-btn,.contact-main-btn,.scene-link,.email-pill{cursor:pointer}
.contact-modal{position:fixed; inset:0; z-index:99; display:none; align-items:center; justify-content:center; padding:22px}
.contact-modal.active{display:flex}
.modal-backdrop{position:absolute; inset:0; background:rgba(9,33,74,.28); backdrop-filter:blur(8px)}
.modal-card{
  position:relative; z-index:2; width:min(560px,100%); padding:34px;
  border-radius:26px; background:#fff; border:1px solid rgba(35,136,255,.18);
  box-shadow:0 30px 90px rgba(34,104,197,.20)
}
.modal-close{
  position:absolute; right:18px; top:16px; width:38px; height:38px; border-radius:50%;
  border:1px solid rgba(35,136,255,.18); background:#f3f8ff; color:var(--blue-dark); font-size:24px; cursor:pointer
}
.modal-eyebrow{margin:0 0 10px; color:var(--blue); letter-spacing:3px; text-transform:uppercase; font-weight:800}
.modal-card h2{margin:0; font-size:34px; color:var(--blue-dark)}
.modal-desc{color:var(--muted); line-height:1.8; margin:12px 0 22px}
.contact-form{display:grid; gap:14px}
.contact-form input,.contact-form textarea{
  width:100%; padding:15px 16px; font-size:15px; color:var(--blue-dark);
  border:1px solid rgba(35,136,255,.16); border-radius:14px; background:#f9fbff; outline:none
}
.contact-form input:focus,.contact-form textarea:focus{border-color:rgba(35,136,255,.48); box-shadow:0 0 0 4px rgba(35,136,255,.08)}
.contact-form textarea{min-height:140px; resize:vertical}
.contact-form button[type=submit]{
  border:0; border-radius:14px; background:linear-gradient(135deg,var(--blue),var(--cyan));
  color:#fff; font-size:16px; font-weight:900; padding:16px; cursor:pointer
}
.contact-form button[type=submit]:disabled{opacity:.7; cursor:not-allowed}
.form-status{white-space:pre-wrap;min-height:22px; color:var(--blue-deep); line-height:1.5}
.form-status.error{color:#b42318}
.honeypot{position:absolute!important; left:-9999px!important; opacity:0!important}
.body-lock{overflow:hidden}

@media(max-width:1180px){
  .hero{grid-template-columns:1fr; padding-top:34px}
  .visual-panel{min-height:520px}
  .features{grid-template-columns:repeat(2,1fr)}
  .workflow{grid-template-columns:repeat(2,1fr)}
  .scene-cards{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  .nav{padding:0 20px}
  .nav nav{display:none}
  .brand img{height:40px}
  .nav-right{gap:8px}
  .lang-switch{padding:3px}
  .lang-btn{padding:6px 8px;font-size:12px}
  .features article{border-right:0; border-bottom:1px solid rgba(35,136,255,.10)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .contact{flex-direction:column; align-items:flex-start}
}
@media(max-width:620px){
  .nav{height:78px}
  .nav-btn{display:none}
  .lang-switch{display:flex}
  .hero{padding:26px 20px 18px}
  .hero h1{font-size:68px; letter-spacing:-2px}
  .hero h2{font-size:28px; letter-spacing:2px}
  .hero h3{font-size:38px}
  .desc{font-size:17px}
  .section,.section-card{margin-left:20px; margin-right:20px}
  .section{padding-left:0; padding-right:0}
  .visual-panel{min-height:390px}
  .hero-visual-image-wrap{padding:18px}
  .features,.workflow,.scene-cards,.stats{grid-template-columns:1fr}
  .modal-card{padding:28px 20px}
  .modal-card h2{font-size:28px}
  .hero-actions{align-items:stretch}
  .hero-actions .primary,.hero-actions .secondary{width:100%}
  .contact-main-btn{width:100%}
}