/* ============ 历影科技官网 · 共享样式 ============ */
:root{
  --bg:#060b16; --ink:#e8eef7; --sub:#8fa3bd; --line:rgba(143,163,189,.22);
  --accent:#39c8a0; --card:#0b1424;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:
    radial-gradient(rgba(143,163,189,.10) 1px, transparent 1.5px) 0 0/34px 34px,
    radial-gradient(1200px 700px at 50% 115%, rgba(23,60,110,.38), transparent 60%),
    var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  overflow-x:hidden;
}
#particles{position:fixed;inset:0;z-index:0;pointer-events:none}
main{position:relative;z-index:1}

/* ---------- 顶栏 ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;justify-content:space-between;align-items:center;
  padding:20px 40px;transition:background .35s,box-shadow .35s;
}
header.scrolled{background:rgba(6,11,22,.86);backdrop-filter:blur(12px);box-shadow:0 6px 30px rgba(0,0,0,.4)}
.logo{display:flex;align-items:center;gap:12px;font-weight:600;letter-spacing:.12em;color:var(--ink);text-decoration:none}
.logo .mark{
  width:34px;height:34px;border-radius:9px;
  border:1px solid var(--line);
  background:linear-gradient(135deg,#123a5e,#0a1c33);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);font-size:15px;font-weight:700;
}
.logo small{display:block;font-size:10px;font-weight:400;color:var(--sub);letter-spacing:.3em;margin-top:2px}
nav{display:flex;gap:30px;font-size:13px;color:var(--sub)}
nav a{color:inherit;text-decoration:none;transition:color .2s;position:relative;padding:4px 0}
nav a:hover{color:var(--ink)}
nav a.active{color:var(--accent)}
nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);border-radius:2px}
@media (max-width:860px){
  nav{position:fixed;top:0;right:-260px;width:240px;height:100vh;background:rgba(8,14,26,.97);
    flex-direction:column;gap:8px;padding:80px 28px;transition:right .35s}
  nav.open{right:0}
  #menuBtn{display:flex !important}
}
#menuBtn{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:rgba(11,20,36,.8);color:var(--ink);font-size:17px;cursor:pointer;
  align-items:center;justify-content:center;
}

/* ---------- 子页 Hero ---------- */
.page-hero{
  min-height:46vh;display:flex;flex-direction:column;justify-content:center;align-items:center;
  text-align:center;padding:130px 24px 60px;position:relative;
}
.page-hero .crumb{font-size:11px;letter-spacing:.5em;color:var(--accent);text-indent:.5em;margin-bottom:18px}
.page-hero h1{font-size:clamp(32px,5vw,58px);font-weight:700;letter-spacing:.12em;text-shadow:0 4px 40px rgba(0,0,0,.6)}
.page-hero .en{font-size:11px;letter-spacing:.45em;color:var(--sub);margin-top:14px;text-indent:.45em}
.page-hero .lead{max-width:720px;margin-top:22px;font-size:14.5px;line-height:2;color:#c3d2e5}

/* ---------- 通用板块 ---------- */
.section{max-width:1180px;margin:0 auto;padding:70px 28px}
.section-title{text-align:center;margin-bottom:46px}
.section-title .cn{font-size:clamp(22px,3vw,32px);font-weight:700;letter-spacing:.14em}
.section-title .en{font-size:11px;letter-spacing:.4em;color:var(--sub);margin-top:10px;text-indent:.4em}
.section-title .bar{width:44px;height:3px;background:var(--accent);border-radius:3px;margin:16px auto 0}

/* 滚动渐显 */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}

/* ---------- 数字亮点 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:980px;margin:0 auto}
.stat{
  background:rgba(11,20,36,.66);border:1px solid var(--line);border-radius:18px;
  padding:34px 16px;text-align:center;transition:transform .3s,border-color .3s;
}
.stat:hover{transform:translateY(-6px);border-color:rgba(57,200,160,.5)}
.stat b{display:block;font-size:clamp(30px,4vw,44px);font-weight:700;color:var(--accent)}
.stat span{display:block;margin-top:10px;font-size:13px;color:var(--sub);letter-spacing:.14em}
@media (max-width:760px){ .stats{grid-template-columns:repeat(2,1fr)} }

/* ---------- 业务卡片 ---------- */
.biz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:900px){ .biz-grid{grid-template-columns:1fr} }
.biz{
  position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(18,58,94,.35),rgba(10,28,51,.65));
  padding:38px 30px;transition:transform .35s,border-color .35s,box-shadow .35s;
}
.biz:hover{transform:translateY(-8px);border-color:rgba(57,200,160,.55);box-shadow:0 24px 60px rgba(0,20,40,.55)}
.biz .num{font-size:13px;color:var(--accent);letter-spacing:.3em}
.biz h3{font-size:21px;font-weight:600;margin:14px 0 6px;letter-spacing:.06em}
.biz .en{font-size:10px;letter-spacing:.22em;color:var(--sub)}
.biz p{margin-top:18px;font-size:13.5px;line-height:2;color:#aebdd2}
.biz ul{margin-top:18px;list-style:none}
.biz li{font-size:12.5px;color:#c3d2e5;padding:7px 0;border-top:1px dashed rgba(143,163,189,.18)}
.biz li::before{content:"◆";color:var(--accent);font-size:9px;margin-right:10px;vertical-align:1px}
.biz .bg-ico{
  position:absolute;right:-14px;bottom:-18px;font-size:110px;opacity:.07;font-weight:700;
  font-family:Georgia,serif;pointer-events:none;
}

/* ---------- 案例墙 ---------- */
.filter{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:36px}
.filter button{
  padding:9px 20px;border-radius:999px;font-size:12.5px;letter-spacing:.1em;
  color:var(--sub);background:rgba(11,20,36,.7);border:1px solid var(--line);cursor:pointer;
  transition:all .25s;
}
.filter button:hover{color:var(--ink);border-color:var(--ink)}
.filter button.on{color:#04120c;background:var(--accent);border-color:var(--accent);font-weight:600}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:960px){ .case-grid{grid-template-columns:repeat(2,1fr)} }
@media (max-width:620px){ .case-grid{grid-template-columns:1fr} }
.case{
  position:relative;border-radius:16px;overflow:hidden;cursor:pointer;
  border:1px solid var(--line);background:var(--card);
  transition:transform .35s,border-color .35s,box-shadow .35s;
}
.case:hover{transform:translateY(-8px) scale(1.015);border-color:rgba(57,200,160,.6);box-shadow:0 26px 60px rgba(0,18,38,.6)}
.case .pic{aspect-ratio:3/2;overflow:hidden}
.case .pic img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s}
.case:hover .pic img{transform:scale(1.08)}
.case .txt{padding:18px 20px 20px}
.case .tag{font-size:10.5px;letter-spacing:.16em;color:var(--accent);border:1px solid rgba(57,200,160,.4);border-radius:999px;padding:3px 11px}
.case h3{font-size:15.5px;font-weight:600;margin-top:12px;letter-spacing:.03em}
.case p{font-size:12.5px;line-height:1.85;color:#9db0c8;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 案例详情弹层 ---------- */
#detail{
  position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;
  background:rgba(4,8,16,.72);backdrop-filter:blur(10px);
}
#detail.open{display:flex}
.sheet{
  width:min(880px,92vw);background:var(--card);
  border:1px solid var(--line);border-radius:20px;overflow:hidden;
  display:grid;grid-template-columns:1.15fr 1fr;
  animation:pop .45s cubic-bezier(.2,.9,.3,1.2);
}
@keyframes pop{from{transform:scale(.92) translateY(14px);opacity:0}to{transform:none;opacity:1}}
.sheet .pic{aspect-ratio:3/2;background:#050a13}
.sheet .pic img{width:100%;height:100%;object-fit:cover;display:block}
.sheet .info{padding:34px 32px;display:flex;flex-direction:column;gap:14px}
.sheet .tag{align-self:flex-start;font-size:11px;letter-spacing:.2em;color:var(--accent);border:1px solid rgba(57,200,160,.4);border-radius:999px;padding:5px 14px}
.sheet h2{font-size:22px;font-weight:600;letter-spacing:.04em}
.sheet p{font-size:13.5px;line-height:1.9;color:#aebdd2}
.sheet .more{margin-top:auto;font-size:13px;color:var(--sub)}
.sheet .more b{color:var(--ink);font-weight:500}
#close{
  position:absolute;top:18px;right:22px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:rgba(11,20,36,.8);color:var(--ink);
  font-size:18px;cursor:pointer;line-height:1;
}
#close:hover{border-color:var(--ink)}
@media (max-width:760px){ .sheet{grid-template-columns:1fr;max-height:88vh;overflow:auto} .sheet .pic{aspect-ratio:16/9} }

/* ---------- 时间线（公司简介） ---------- */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:34px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--accent),rgba(57,200,160,.06))}
.tl{position:relative;padding:0 0 34px 22px}
.tl::before{content:"";position:absolute;left:-31px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--bg);border:2px solid var(--accent)}
.tl b{font-size:15px;color:var(--accent);letter-spacing:.06em}
.tl h4{font-size:16px;font-weight:600;margin:8px 0 6px}
.tl p{font-size:13px;line-height:1.9;color:#aebdd2}

/* ---------- 联系我们 ---------- */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:30px;max-width:1000px;margin:0 auto}
@media (max-width:860px){ .contact-wrap{grid-template-columns:1fr} }
.contact-card{
  background:rgba(11,20,36,.66);border:1px solid var(--line);border-radius:20px;padding:38px 34px;
}
.contact-card h3{font-size:18px;font-weight:600;letter-spacing:.08em;margin-bottom:24px}
.crow{display:flex;gap:14px;padding:13px 0;border-top:1px dashed rgba(143,163,189,.18);font-size:13.5px;line-height:1.8}
.crow .k{color:var(--sub);flex:0 0 74px;letter-spacing:.1em}
.crow .v{color:#dbe6f3}
.form-card input,.form-card textarea{
  width:100%;background:rgba(6,11,22,.7);border:1px solid var(--line);border-radius:12px;
  padding:13px 16px;color:var(--ink);font-size:14px;font-family:inherit;outline:none;transition:border-color .25s;
}
.form-card input:focus,.form-card textarea:focus{border-color:var(--accent)}
.form-card label{display:block;font-size:12px;color:var(--sub);letter-spacing:.14em;margin:16px 0 7px}
.form-card button{
  margin-top:24px;width:100%;padding:14px;border-radius:12px;border:none;cursor:pointer;
  background:var(--accent);color:#04120c;font-size:14.5px;font-weight:600;letter-spacing:.2em;
  transition:filter .2s;
}
.form-card button:hover{filter:brightness(1.12)}
#formTip{margin-top:12px;font-size:12.5px;color:var(--accent);text-align:center;min-height:18px}

/* ---------- 联系页：快速拨号 ---------- */
.tel-link{color:#dbe6f3;text-decoration:none;border-bottom:1px dashed rgba(143,163,189,.35);transition:color .2s,border-color .2s}
.tel-link:hover{color:var(--accent);border-color:var(--accent)}
.cta-card{display:flex;flex-direction:column}
.cta-lead{font-size:13.5px;line-height:1.9;color:#aebdd2;margin-bottom:20px}
.cta-tel{display:flex;align-items:center;gap:14px;padding:15px 18px;border:1px solid var(--line);border-radius:14px;background:rgba(6,11,22,.6);text-decoration:none;margin-bottom:12px;transition:border-color .25s,transform .25s}
.cta-tel:hover{border-color:var(--accent);transform:translateY(-2px)}
.cta-tel .tel-ico{width:36px;height:36px;flex:0 0 36px;border-radius:50%;background:rgba(57,200,160,.14);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:16px}
.cta-tel b{display:block;font-size:16px;letter-spacing:.06em;color:#eaf3ff}
.cta-tel i{display:block;font-style:normal;font-size:11.5px;color:var(--sub);letter-spacing:.08em;margin-top:3px}
.cta-note{margin-top:auto;padding-top:16px;font-size:11.5px;color:var(--sub);letter-spacing:.06em;text-align:center}

/* ---------- 页脚 ---------- */
footer{
  position:relative;z-index:1;margin-top:40px;border-top:1px solid var(--line);
  background:rgba(5,9,17,.8);backdrop-filter:blur(8px);
}
.foot-in{max-width:1180px;margin:0 auto;padding:44px 28px 30px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
@media (max-width:760px){ .foot-in{grid-template-columns:1fr} }
.foot-in h5{font-size:13px;letter-spacing:.18em;color:var(--ink);margin-bottom:16px}
.foot-in p,.foot-in a{font-size:12.5px;color:var(--sub);line-height:2.1;text-decoration:none;display:block}
.foot-in a:hover{color:var(--accent)}
.copyright{text-align:center;padding:16px;font-size:11.5px;color:#5d7089;letter-spacing:.08em;border-top:1px solid rgba(143,163,189,.12)}