:root{
  --sky:#2f9be0;
  --forest:#1f9e6e;
  --grad:linear-gradient(135deg,#3aa8ec 0%,#1f9e6e 100%);
  --grad-soft:linear-gradient(135deg,rgba(58,168,236,.12) 0%,rgba(31,158,110,.12) 100%);
  --ink:#0e1c26;
  --ink-soft:#465a66;
  --muted:#7b8c97;
  --bg:#f1f7f5;
  --card:#ffffff;
  --line:rgba(14,40,50,.08);
  --shadow:0 14px 44px rgba(16,60,80,.10);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  color:var(--ink);background:var(--bg);overflow-x:hidden;line-height:1.65;
}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}

/* ===== 顶部导航 ===== */
header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 5vw;
  background:rgba(12,24,30,.34);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:background .35s, padding .35s, box-shadow .35s;
}
header.solid{
  background:rgba(255,255,255,.92);
  box-shadow:0 6px 26px rgba(16,50,70,.10);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:42px;height:42px;border-radius:12px;background:#fff;padding:2px;box-shadow:0 4px 14px rgba(0,0,0,.12)}
.brand .name{font-size:17px;font-weight:700;letter-spacing:1px;color:#fff;transition:color .35s}
.brand .sub{font-size:10.5px;letter-spacing:3px;color:rgba(255,255,255,.72);transition:color .35s}
header.solid .brand .name{color:var(--ink)}
header.solid .brand .sub{color:var(--muted)}
nav{display:flex;gap:30px;align-items:center}
nav a{color:rgba(255,255,255,.92);font-size:14.5px;letter-spacing:1px;position:relative;transition:color .3s;padding:4px 0}
header.solid nav a{color:var(--ink-soft)}
nav a::after{content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;background:var(--grad);transition:width .3s}
nav a:hover::after,nav a.on::after{width:100%}
nav a:hover,nav a.on{color:var(--forest)}
header.solid nav a.on{color:var(--forest)}
.menu-btn{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer}
header.solid .menu-btn{color:var(--ink)}

/* ===== 全屏轮播 Hero ===== */
.hero{position:relative;height:100vh;min-height:620px;width:100%;overflow:hidden;background:#0b1620}
.slide{position:absolute;inset:0;opacity:0;transition:opacity 1.6s ease-in-out;background-size:cover;background-position:center}
.slide.active{opacity:1}
.slide::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,20,30,.45) 0%,rgba(8,20,30,.30) 42%,rgba(8,20,30,.82) 100%)}
.hero-inner{position:relative;z-index:5;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#fff;padding:0 6vw}
.pill{font-size:12.5px;letter-spacing:5px;text-transform:uppercase;color:#bfe9ff;border:1px solid rgba(120,200,255,.5);padding:8px 22px;border-radius:999px;margin-bottom:26px;background:rgba(255,255,255,.06);backdrop-filter:blur(6px);animation:fadeUp 1.2s .2s both}
.hero-inner h1{font-size:clamp(30px,5.6vw,72px);font-weight:800;line-height:1.18;text-shadow:0 4px 30px rgba(0,0,0,.4);animation:fadeUp 1.2s .45s both}
.hero-inner h1 .accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-inner p{margin-top:22px;font-size:clamp(14px,1.7vw,19px);color:rgba(255,255,255,.88);max-width:660px;line-height:1.85;animation:fadeUp 1.2s .7s both}
.hero-cta{margin-top:34px;display:flex;gap:16px;flex-wrap:wrap;justify-content:center;animation:fadeUp 1.2s .95s both}
.btn{display:inline-block;padding:13px 30px;border-radius:999px;font-size:15px;font-weight:600;letter-spacing:1px;transition:transform .25s,box-shadow .25s}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 30px rgba(31,158,110,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(31,158,110,.45)}
.btn-ghost{border:1px solid rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-3px)}
.dots{position:absolute;bottom:74px;left:50%;transform:translateX(-50%);z-index:6;display:flex;gap:10px}
.dot{width:34px;height:4px;border-radius:2px;background:rgba(255,255,255,.35);cursor:pointer;transition:background .3s}
.dot.active{background:#7fd4ff}
.slide-label{position:absolute;bottom:84px;right:5vw;z-index:6;color:rgba(255,255,255,.85);font-size:13px;letter-spacing:2px}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:6;color:rgba(255,255,255,.75);font-size:12px;letter-spacing:3px;animation:bob 2s infinite}

/* ===== 通用区块 ===== */
.section{padding:96px 6vw;max-width:1240px;margin:0 auto}
.section.wide{max-width:none}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:4px;text-transform:uppercase;color:var(--forest);font-weight:600;margin-bottom:14px}
.section h2{font-size:clamp(26px,3.4vw,40px);font-weight:800;text-align:center;letter-spacing:1px}
.section .lead{text-align:center;color:var(--ink-soft);margin:16px auto 56px;font-size:16px;max-width:720px}
.center{text-align:center}

/* ===== 标语横幅 ===== */
.slogan-band{background:var(--grad);color:#fff;padding:70px 6vw;text-align:center}
.slogan-band .big{font-size:clamp(26px,4vw,48px);font-weight:800;letter-spacing:2px;line-height:1.4;text-shadow:0 4px 24px rgba(0,0,0,.18)}
.slogan-band .small{margin-top:18px;font-size:16px;opacity:.92;letter-spacing:3px}
.slogan-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px;margin-top:54px}
.slogan-grid .item{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:16px;padding:26px 22px;backdrop-filter:blur(6px)}
.slogan-grid .item h3{font-size:19px;margin-bottom:8px;font-weight:700}
.slogan-grid .item p{font-size:14px;opacity:.9;line-height:1.7}

/* ===== 卡片 ===== */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:26px}
.card{background:var(--card);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);transition:transform .35s,box-shadow .35s;border:1px solid var(--line)}
.card:hover{transform:translateY(-8px);box-shadow:0 22px 54px rgba(16,60,80,.18)}
.card .pic{height:190px;background-size:cover;background-position:center}
.card .body{padding:22px 24px 28px}
.tag{display:inline-block;margin-bottom:10px;font-size:12px;color:var(--forest);background:rgba(31,158,110,.12);padding:4px 12px;border-radius:999px;font-weight:600}
.card h3{font-size:20px;margin-bottom:8px}
.card p{color:var(--ink-soft);font-size:14.5px;line-height:1.75}
.card .more{display:inline-block;margin-top:14px;color:var(--sky);font-weight:600;font-size:14px}

/* ===== 关于 / 双栏 ===== */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.two-col .pic{height:380px;border-radius:20px;background-size:cover;background-position:center;box-shadow:var(--shadow)}
.two-col h2{text-align:left}
.two-col .lead{text-align:left;margin-left:0}
.feat-list{list-style:none;margin-top:20px}
.feat-list li{display:flex;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--ink-soft)}
.feat-list li b{color:var(--ink)}
.dot-mark{width:10px;height:10px;border-radius:50%;background:var(--grad);flex:0 0 auto;margin-top:8px}

/* ===== 数据实力 ===== */
.stats{background:#0e1c26;color:#fff;padding:80px 6vw}
.stats .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px;max-width:1100px;margin:0 auto;text-align:center}
.stat .num{font-size:clamp(32px,4vw,52px);font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .label{margin-top:8px;font-size:14px;letter-spacing:2px;color:rgba(255,255,255,.78)}

/* ===== 时间线（关于页） ===== */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:30px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:var(--grad)}
.tl-item{position:relative;padding:0 0 38px 28px}
.tl-item::before{content:"";position:absolute;left:-30px;top:4px;width:18px;height:18px;border-radius:50%;background:#fff;border:4px solid var(--forest)}
.tl-item .year{font-weight:800;color:var(--forest);font-size:18px}
.tl-item h3{font-size:19px;margin:4px 0 6px}
.tl-item p{color:var(--ink-soft);font-size:15px}

/* ===== 业务详情 ===== */
.biz-row{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;margin-bottom:64px}
.biz-row:nth-child(even) .biz-pic{order:2}
.biz-pic{height:300px;border-radius:18px;background-size:cover;background-position:center;box-shadow:var(--shadow)}
.biz-row h3{font-size:24px;margin-bottom:6px}
.biz-row .tag{margin-bottom:14px}
.biz-row p{color:var(--ink-soft);font-size:15.5px;line-height:1.85;margin-bottom:14px}
.biz-row ul{list-style:none;display:flex;flex-wrap:wrap;gap:10px}
.biz-row ul li{font-size:13.5px;background:var(--grad-soft);color:var(--ink);padding:6px 14px;border-radius:999px;border:1px solid var(--line)}

/* ===== 联系 / 表单 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
.contact-info .item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.contact-info .ic{width:44px;height:44px;border-radius:12px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;flex:0 0 auto}
.contact-info .item h4{font-size:16px;margin-bottom:3px}
.contact-info .item p{color:var(--ink-soft);font-size:14.5px}
form .field{margin-bottom:18px}
form label{display:block;font-size:14px;font-weight:600;margin-bottom:7px;color:var(--ink)}
form input,form textarea{width:100%;padding:13px 16px;border:1px solid var(--line);border-radius:12px;font-size:15px;font-family:inherit;background:#fff;transition:border .25s,box-shadow .25s}
form input:focus,form textarea:focus{outline:none;border-color:var(--sky);box-shadow:0 0 0 3px rgba(47,155,224,.15)}
form textarea{resize:vertical;min-height:120px}
.form-note{font-size:13px;color:var(--muted);margin-top:10px}
.map{height:320px;border-radius:18px;background:linear-gradient(135deg,#dff0ea,#cfe6f5);display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:15px;border:1px solid var(--line)}

/* ===== 子页头图 ===== */
.page-hero{position:relative;height:46vh;min-height:340px;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;overflow:hidden}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,20,30,.55),rgba(8,20,30,.7))}
.page-hero .ph-inner{position:relative;z-index:2;padding:0 6vw}
.page-hero h1{font-size:clamp(28px,4.4vw,52px);font-weight:800;letter-spacing:2px;text-shadow:0 4px 24px rgba(0,0,0,.4)}
.page-hero p{margin-top:12px;font-size:16px;opacity:.9;letter-spacing:2px}

/* ===== CTA 条 ===== */
.cta{background:var(--grad);color:#fff;text-align:center;padding:74px 6vw}
.cta h2{font-size:clamp(24px,3.4vw,38px);font-weight:800}
.cta p{margin:14px auto 30px;opacity:.92;font-size:16px;max-width:600px}
.cta .btn-ghost{border-color:rgba(255,255,255,.8)}

/* ===== 页脚 ===== */
footer{background:#0a1620;color:rgba(255,255,255,.55);padding:54px 6vw 26px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;max-width:1240px;margin:0 auto}
.foot-brand .name{color:#fff;font-size:18px;font-weight:700;margin-bottom:10px}
.foot-brand p{font-size:13.5px;line-height:1.8;max-width:300px}
.foot-col h5{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:1px}
.foot-col a{display:block;font-size:13.5px;padding:5px 0;transition:color .2s}
.foot-col a:hover{color:var(--sky)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:38px;padding-top:20px;text-align:center;font-size:12.5px;letter-spacing:1px;color:rgba(255,255,255,.4)}
.foot-bottom b{color:rgba(255,255,255,.75)}

/* ===== 滚动揭示动画 ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}

@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ===== 响应式 ===== */
@media (max-width:860px){
  .two-col,.biz-row,.contact-grid{grid-template-columns:1fr;gap:30px}
  .biz-row:nth-child(even) .biz-pic{order:0}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  nav{display:none}
  nav.open{display:flex;position:absolute;top:64px;right:5vw;flex-direction:column;gap:14px;background:#fff;padding:18px 26px;border-radius:14px;box-shadow:var(--shadow)}
  nav.open a{color:var(--ink-soft)}
  .menu-btn{display:block}
  .brand .sub{display:none}
  .section{padding:66px 6vw}
  .foot-grid{grid-template-columns:1fr}
}

/* ===== 产品真实视觉 mock（编辑器 / 规格面板 / 控制台） ===== */
.mock{height:100%;width:100%;background:#0f1c2e;color:#d7e3f4;display:flex;flex-direction:column;font-family:"Cascadia Code","JetBrains Mono",Consolas,monospace;border-radius:inherit;overflow:hidden;text-align:left}
.mock-head{display:flex;align-items:center;gap:7px;padding:11px 14px;background:#16283f;border-bottom:1px solid #23395a;flex:none}
.mock-head i{width:10px;height:10px;border-radius:50%;display:inline-block}
.mock-head i:nth-child(1){background:#ff5f57}.mock-head i:nth-child(2){background:#febc2e}.mock-head i:nth-child(3){background:#28c840}
.mock-head .t{margin-left:8px;font-size:11.5px;color:#8ba3c7;letter-spacing:.4px}
.mock-body{flex:1;padding:14px 16px;font-size:12px;line-height:1.85;overflow:hidden}
.tok-k{color:#7aa2f7}.tok-s{color:#9ece6a}.tok-n{color:#ff9e64}.tok-c{color:#565f89}.tok-f{color:#2ac3de}
.term-p{color:#28c840}.term-out{color:#8ba3c7}.term-hl{color:#e0af68}
.bar-row{display:flex;align-items:center;gap:10px;margin:9px 0}
.bar-row .bl{width:118px;flex:none;font-size:11px;color:#8ba3c7}
.bar-row .bl b{color:#d7e3f4;display:block;font-size:12px}
.bar-row .bar{flex:1;height:8px;background:#23395a;border-radius:4px;overflow:hidden}
.bar-row .bar i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,#2ac3de,#7aa2f7)}
.bar-row .bv{width:76px;flex:none;text-align:right;font-size:11px;color:#9ece6a}
/* 像素渲染图（QL 输出） */
.px{image-rendering:pixelated}