/* ============================================================
   QINGNENG V2 — Home Sections
   ============================================================ */

/* ---------- BUILT FROM THE CELL UP ---------- */
.process{position:relative}
.process-track{
  display:grid;grid-template-columns:repeat(7,1fr);gap:0;
  border-top:1px solid var(--line-strong);
  position:relative;
}
.process-item{padding:34px 20px 10px 0;position:relative;opacity:.45;transition:opacity .6s}
.process-item.in{opacity:1}
.process-item::before{
  content:"";position:absolute;top:-1px;left:0;width:100%;height:1px;
  background:linear-gradient(90deg,var(--accent),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform 1.2s var(--ease);
}
.process-item.in::before{transform:scaleX(1)}
.process-item .num{
  font-size:.74rem;font-weight:700;letter-spacing:.22em;color:var(--accent);
  display:flex;align-items:center;gap:10px;margin-bottom:14px;
}
.process-item .num::after{content:"";flex:1;height:1px;background:var(--line);max-width:44px}
.process-item h3{font-size:1rem;font-weight:650;letter-spacing:.02em;margin-bottom:6px}
.process-item p{font-size:.82rem;color:var(--muted);line-height:1.5}

/* ---------- PORTFOLIO ---------- */
.portfolio{display:grid;grid-template-columns:1fr 1fr;gap:2px;background:var(--line)}
.p-item{position:relative;background:var(--bg);min-height:520px;display:flex;align-items:flex-end;overflow:hidden;padding:44px}
.p-item::after{
  content:"";position:absolute;inset:auto 0 0 0;height:55%;
  background:linear-gradient(transparent,rgba(5,8,12,.88));
  pointer-events:none;
}
.p-item .p-img{
  position:absolute;inset:0;z-index:0;
  transition:transform 1.1s var(--ease);will-change:transform;
}
.p-item .p-img img{width:100%;height:100%;object-fit:cover}
.p-item:hover .p-img{transform:scale(1.045)}
.p-item .p-cat{
  position:absolute;top:30px;left:44px;z-index:2;
  font-size:.7rem;letter-spacing:.26em;text-transform:uppercase;color:var(--accent);
  display:flex;align-items:center;gap:10px;
}
.p-item .p-cat::before{content:"";width:22px;height:1px;background:var(--accent)}
.p-item .p-body{position:relative;z-index:2;width:100%}
.p-item .p-body h3{font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:700}
.p-item .p-body .m{color:var(--text-2);font-size:.88rem;margin:8px 0 4px;letter-spacing:.02em}
.p-item .p-body .d{color:var(--muted);font-size:.86rem;max-width:440px}
.p-item .p-link{
  margin-top:20px;display:inline-flex;align-items:center;gap:10px;
  font-size:.76rem;font-weight:650;letter-spacing:.18em;text-transform:uppercase;color:var(--text);
  border-bottom:1px solid var(--line-strong);padding-bottom:6px;transition:color .2s,border-color .2s;
}
.p-item .p-link:hover{color:var(--accent);border-color:var(--accent)}
.p-item .p-link .arr{transition:transform .25s var(--ease)}
.p-item .p-link:hover .arr{transform:translateX(4px)}
.p-item.wide{grid-column:span 2;min-height:600px}
.p-item.dark .p-body h3{font-size:clamp(1.7rem,3vw,2.4rem)}

/* ---------- DISASSEMBLY STAGE (scroll) ---------- */
.stage-wrap{position:relative}
.stage-scroll{height:340vh}
.stage-sticky{
  position:sticky;top:0;height:100vh;overflow:hidden;
  display:flex;align-items:center;
  background:
    radial-gradient(800px 520px at 70% 40%,rgba(62,197,255,.08),transparent 65%),
    var(--bg);
}
.stage-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;width:100%}
.stage-copy h2{margin-bottom:16px}
.stage-copy .stage-hint{color:var(--muted);font-size:.9rem;max-width:460px;margin-bottom:28px}
.sys-list{display:flex;flex-direction:column;gap:0;border-left:1px solid var(--line-strong);padding-left:0}
.sys-item{position:relative;padding:15px 0 15px 34px;opacity:.32;transition:opacity .5s}
.sys-item::before{
  content:"";position:absolute;left:-5px;top:22px;width:9px;height:9px;border-radius:50%;
  background:var(--bg);border:1px solid var(--line-strong);transition:background .4s,border-color .4s,box-shadow .4s;
}
.sys-item.on{opacity:1}
.sys-item.on::before{background:var(--accent);border-color:var(--accent);box-shadow:0 0 14px var(--accent)}
.sys-item b{display:block;font-size:1.02rem;font-weight:650;letter-spacing:.04em}
.sys-item span{font-size:.85rem;color:var(--muted)}
.sys-item .tag{
  position:absolute;right:0;top:14px;font-size:.62rem;letter-spacing:.16em;color:var(--accent);
  border:1px solid var(--accent-soft);padding:3px 9px;border-radius:3px;background:var(--accent-soft);
}
.stage-prod{
  position:relative;display:flex;align-items:center;justify-content:center;
  min-height:520px;will-change:transform;
}
.stage-prod .p{position:relative;width:min(400px,64vw);filter:drop-shadow(0 30px 60px rgba(0,0,0,.5))}
.stage-prod .p img{width:100%}
.stage-prod .ring{
  position:absolute;inset:6% 2%;border:1px solid rgba(62,197,255,.22);border-radius:50%;
  pointer-events:none;
}
.stage-prod .ring.r2{inset:16% 10%;border-color:rgba(62,197,255,.12)}
.stage-prod .radar{
  position:absolute;inset:-6% -10%;pointer-events:none;z-index:-1;
  background:radial-gradient(50% 50% at 50% 50%,rgba(62,197,255,.14),transparent 70%);
}
.stage-final{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center;
  opacity:0;visibility:hidden;transition:opacity .8s var(--ease);
}
.stage-final.on{opacity:1;visibility:visible}
.stage-final h2{font-size:clamp(1.9rem,4vw,3.2rem);font-weight:750;letter-spacing:-.03em}
.stage-final p{color:var(--muted);margin-top:12px}

/* ---------- HOW ENERGY FLOWS ---------- */
.energy-flow{background:var(--bg-2);overflow:hidden}
.flow-board{
  position:relative;border:1px solid var(--line);border-radius:10px;
  background:radial-gradient(700px 400px at 50% 30%,rgba(62,197,255,.05),transparent 70%),var(--bg);
  padding:clamp(28px,5vw,64px);margin-top:20px;
}
.flow-svg{width:100%;height:auto;display:block}
.flow-svg .node rect,.flow-svg .node circle{fill:#0d1722;stroke:var(--line-strong);stroke-width:1.2}
.flow-svg .node text{fill:var(--text);font-size:15px;font-weight:650;letter-spacing:.06em}
.flow-svg .node .sub{fill:var(--muted);font-size:10.5px;font-weight:400;letter-spacing:.08em}
.flow-svg .cap{fill:var(--muted);font-size:10px;letter-spacing:.22em}
.flow-svg path.wire{fill:none;stroke:rgba(255,255,255,.16);stroke-width:1.4}
.flow-svg path.energy{
  fill:none;stroke:var(--accent);stroke-width:2;
  stroke-dasharray:10 14;stroke-linecap:round;
  opacity:0;transition:opacity .4s;
}
.flow-svg .flow-on path.energy{opacity:1;animation:flowdash 1.6s linear infinite}
@keyframes flowdash{to{stroke-dashoffset:-96}}
.flow-svg .flow-on .cap{fill:var(--accent-2)}
.flow-legend{display:flex;gap:26px;flex-wrap:wrap;margin-top:26px;justify-content:center}
.flow-legend span{display:flex;align-items:center;gap:8px;font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.flow-legend i{width:22px;height:2px;background:var(--accent);border-radius:2px}
.flow-legend i.g{background:rgba(255,255,255,.16)}

/* ---------- ENGINEERED FOR ENERGY ---------- */
.about-split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,90px);align-items:start}
.about-split .zh-lead{font-size:1.05rem;color:var(--text-2);line-height:1.9;font-family:var(--font-cn)}
.about-split .zh-lead p+p{margin-top:16px}
.about-figures{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.af{background:var(--bg);padding:26px 24px}
.af b{display:block;font-size:1.9rem;font-weight:750;letter-spacing:-.02em}
.af b em{font-style:normal;color:var(--accent);font-size:.5em;margin-left:3px}
.af span{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.af p{font-size:.8rem;color:var(--muted);margin-top:6px;line-height:1.5;text-transform:none;letter-spacing:0}

/* ---------- SAFETY ---------- */
.safety-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.s-item{background:var(--bg-2);padding:34px 30px;min-height:230px;display:flex;flex-direction:column;gap:12px;position:relative;overflow:hidden;transition:background .3s}
.s-item:hover{background:var(--bg-3)}
.s-item .ic{width:38px;height:38px;border:1px solid var(--accent-soft);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--accent);background:var(--accent-soft)}
.s-item h3{font-size:1.05rem;font-weight:650}
.s-item p{color:var(--muted);font-size:.87rem;line-height:1.6}
.s-item .no{position:absolute;right:22px;top:16px;font-size:2.6rem;font-weight:800;color:rgba(255,255,255,.045);line-height:1}

/* ---------- SCENES ---------- */
.scene-strip{display:grid;grid-template-columns:repeat(6,1fr);gap:2px;background:var(--line)}
.scene{position:relative;height:clamp(320px,38vw,460px);overflow:hidden;background:var(--bg-2)}
.scene .bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  filter:grayscale(.55) brightness(.55) contrast(1.05);
  transition:filter .8s,transform 1.2s var(--ease);
}
.scene:hover .bg{filter:grayscale(.15) brightness(.85);transform:scale(1.05)}
.scene .ov{position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(5,8,12,.9));display:flex;flex-direction:column;justify-content:flex-end;padding:24px 22px}
.scene .no{font-size:.68rem;letter-spacing:.28em;color:var(--accent);font-weight:700}
.scene h3{font-size:1.1rem;margin-top:6px;font-weight:700;letter-spacing:.02em}
.scene p{font-size:.8rem;color:var(--muted);margin-top:4px}
.scene .zh{display:block;color:var(--muted)}

/* ---------- FACTORY ---------- */
.factory-strip{position:relative}
.factory-track{
  display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:18px;scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent;
}
.factory-track::-webkit-scrollbar{height:5px}
.factory-track::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:3px}
.f-card{
  flex:0 0 min(420px,84vw);scroll-snap-align:start;
  border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--bg-2);
}
.f-card .ph{height:250px;overflow:hidden;position:relative}
.f-card .ph img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
.f-card:hover .ph img{transform:scale(1.05)}
.f-card .fd{padding:20px 22px}
.f-card .fd .no{font-size:.7rem;letter-spacing:.24em;color:var(--accent);font-weight:700}
.f-card .fd h3{font-size:1rem;margin:6px 0 6px}
.f-card .fd p{color:var(--muted);font-size:.84rem}

/* ---------- OEM ---------- */
.oem{
  position:relative;overflow:hidden;
  background:
    radial-gradient(700px 420px at 85% 20%,rgba(62,197,255,.09),transparent 60%),
    var(--bg-2);
  border-block:1px solid var(--line);
}
.oem-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.oem-list{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);margin-top:34px}
.oem-list li{background:var(--bg);padding:18px 20px;display:flex;align-items:center;gap:12px;font-size:.92rem;font-weight:550}
.oem-list li::before{content:"+";color:var(--accent);font-weight:700}
.oem-side{border:1px solid var(--line);border-radius:10px;background:rgba(255,255,255,.02);padding:34px;position:relative}
.oem-side::after{
  content:"";position:absolute;inset:12px;border:1px solid rgba(62,197,255,.14);border-radius:6px;pointer-events:none;
}
.oem-side .big{font-size:2.4rem;font-weight:750;letter-spacing:-.03em;line-height:1.1}
.oem-side p{color:var(--muted);margin:16px 0 26px;font-size:.92rem}

/* ---------- QUALITY / CERTS ---------- */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cert{
  background:var(--bg-2);padding:26px 24px;min-height:170px;cursor:pointer;
  display:flex;flex-direction:column;justify-content:space-between;gap:14px;
  transition:background .3s;
}
.cert:hover{background:var(--bg-3)}
.cert .c-ic{width:40px;height:40px;border:1px solid var(--line-strong);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--accent)}
.cert b{font-size:.98rem;font-weight:650;letter-spacing:.02em}
.cert span{font-size:.76rem;color:var(--muted);letter-spacing:.06em}
.cert .more{font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);opacity:0;transition:opacity .3s}
.cert:hover .more{opacity:1}

/* ---------- PROJECTS ---------- */
.proj-note{
  display:flex;align-items:center;gap:16px;border:1px dashed var(--line-strong);
  border-radius:8px;padding:26px 30px;background:var(--bg-2);color:var(--muted);font-size:.9rem;
}
.proj-note .w{color:var(--warn);font-size:1.4rem}

/* ---------- QUOTE FORM ---------- */
.quote{background:var(--bg-2);border-top:1px solid var(--line)}
.quote-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(40px,6vw,80px);align-items:start}
.quote-side .big{font-size:clamp(1.7rem,3.2vw,2.4rem);font-weight:750;letter-spacing:-.02em;line-height:1.15}
.quote-side p{color:var(--muted);margin:16px 0 26px}
.contact-line{display:flex;align-items:center;gap:12px;padding:13px 0;border-top:1px solid var(--line);font-size:.92rem}
.contact-line:last-child{border-bottom:1px solid var(--line)}
.contact-line b{font-weight:650}
.contact-line .lbl{color:var(--muted);min-width:86px;font-size:.76rem;letter-spacing:.16em;text-transform:uppercase}
.form{display:grid;grid-template-columns:1fr 1fr;gap:16px;border:1px solid var(--line);border-radius:10px;background:rgba(255,255,255,.02);padding:clamp(22px,3vw,36px)}
.form .full{grid-column:span 2}
.field label{display:block;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:rgba(7,11,17,.7);border:1px solid var(--line-strong);
  border-radius:var(--radius);padding:13px 14px;color:var(--text);
  transition:border-color .25s;outline:none;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent)}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%237e8ca0' fill='none' stroke-width='1.4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.field textarea{resize:vertical;min-height:96px}
.field option{background:var(--bg-2)}
.form .submit{
  grid-column:span 2;justify-content:center;width:100%;
  background:var(--accent);border-color:var(--accent);color:#04121d;
}
.form .submit:hover{background:var(--accent-2);border-color:var(--accent-2);color:#04121d}
.form-ok{
  display:none;grid-column:span 2;text-align:center;
  border:1px solid rgba(94,234,212,.35);background:rgba(94,234,212,.07);
  color:var(--ok);padding:18px;border-radius:var(--radius);font-size:.92rem;
}
.form-ok.show{display:block}
.form-note{grid-column:span 2;color:var(--muted);font-size:.74rem;text-align:center}

/* ---------- MODAL ---------- */
.modal{
  position:fixed;inset:0;z-index:200;display:none;
  align-items:center;justify-content:center;padding:24px;
}
.modal.open{display:flex}
.modal .backdrop{position:absolute;inset:0;background:rgba(4,7,11,.82);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.modal .box{
  position:relative;background:var(--bg-2);border:1px solid var(--line-strong);
  border-radius:10px;padding:36px;max-width:520px;width:100%;
}
.modal .box h3{font-size:1.25rem;margin-bottom:10px}
.modal .box p{color:var(--muted);font-size:.92rem}
.modal .close{
  position:absolute;top:16px;right:18px;font-size:1.4rem;color:var(--muted);line-height:1;
}
.modal .close:hover{color:var(--text)}

/* ============================================================
   QINGNENG V2 — Content Pages (products / solutions / about / contact)
   ============================================================ */
.page-hero{
  padding:calc(var(--nav-h) + 70px) 0 60px;position:relative;overflow:hidden;
  background:radial-gradient(760px 420px at 82% 20%,rgba(62,197,255,.10),transparent 62%),var(--bg);
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(700px 420px at 70% 20%,#000 30%,transparent 75%);
  mask-image:radial-gradient(700px 420px at 70% 20%,#000 30%,transparent 75%);
}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:clamp(2rem,4.4vw,3.2rem);font-weight:750;letter-spacing:-.03em;margin-top:14px}
.page-hero p{color:var(--muted);font-size:1.05rem;max-width:640px;margin-top:12px}
.page-hero .crumb{font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}
.page-hero .crumb b{color:var(--accent)}

.content-section{padding:clamp(56px,7vw,96px) 0}
.content-section+.content-section{border-top:1px solid var(--line)}
.sec-label{font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;color:var(--accent);font-weight:650;display:flex;align-items:center;gap:10px;margin-bottom:12px}
.sec-label::before{content:"";width:24px;height:1px;background:var(--accent)}

.pd{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(32px,5vw,72px);align-items:start}
.pd-media{position:relative}
.pd-media .frame{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--bg-2);position:relative}
.pd-media .frame::after{content:"";position:absolute;inset:auto 0 0 0;height:40%;background:linear-gradient(transparent,rgba(5,8,12,.6));pointer-events:none}
.pd-media img{width:100%;max-height:560px;object-fit:contain;background:radial-gradient(400px 300px at 50% 42%,rgba(62,197,255,.09),transparent 70%),var(--bg-2)}
.pd-body h2{font-size:clamp(1.5rem,2.8vw,2.2rem);font-weight:750;letter-spacing:-.02em}
.pd-body .model{color:var(--accent);font-size:.92rem;letter-spacing:.08em;margin:10px 0 18px}
.pd-body .desc{color:var(--muted);line-height:1.75;margin-bottom:26px}
.pd-body .desc.cn{font-family:var(--font-cn);font-size:.95rem}
.spec-table{width:100%;border-collapse:collapse;font-size:.88rem}
.spec-table th,.spec-table td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line)}
.spec-table th{color:var(--muted);font-weight:500;width:38%;letter-spacing:.04em}
.spec-table td{color:var(--text-2)}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:0}
.spec-table th{background:rgba(255,255,255,.02)}
.spec-cols{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:18px}
.spec-cols>div{background:var(--bg-2);padding:14px 16px}
.spec-cols b{display:block;font-size:.88rem;font-weight:650}
.spec-cols span{font-size:.78rem;color:var(--muted)}

.sol-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.sol{background:var(--bg-2);padding:34px 30px;transition:background .3s}
.sol:hover{background:var(--bg-3)}
.sol .no{font-size:.68rem;letter-spacing:.26em;color:var(--accent);font-weight:700}
.sol h3{font-size:1.15rem;margin:10px 0 10px;font-weight:700}
.sol p{color:var(--muted);font-size:.9rem;line-height:1.7}
.sol .cn{display:block;font-family:var(--font-cn);color:var(--accent);font-size:.8rem;margin-top:2px}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.step{background:var(--bg-2);padding:26px 24px;position:relative}
.step .no{font-size:.7rem;letter-spacing:.24em;color:var(--accent);font-weight:700}
.step h4{font-size:.98rem;margin:10px 0 8px;font-weight:650}
.step p{color:var(--muted);font-size:.84rem;line-height:1.6}

.info-list{border-top:1px solid var(--line)}
.info-list>div{display:grid;grid-template-columns:180px 1fr;gap:20px;padding:18px 4px;border-bottom:1px solid var(--line);font-size:.94rem}
.info-list b{color:var(--muted);font-weight:500;letter-spacing:.04em}
.info-list span{color:var(--text-2)}

.cert-chip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line-strong);border-radius:30px;padding:7px 16px;font-size:.8rem;color:var(--text-2);margin:0 8px 10px 0;background:var(--bg-2)}
.cert-chip::before{content:"✓";color:var(--accent);font-weight:700}

.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.team{background:var(--bg-2);padding:26px 24px}
.team .no{font-size:.68rem;letter-spacing:.24em;color:var(--accent);font-weight:700}
.team h3{font-size:1rem;margin:10px 0 8px;font-weight:650}
.team p{color:var(--muted);font-size:.85rem;line-height:1.6}

.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(32px,5vw,72px);align-items:start}

@media (max-width:900px){
  .pd{grid-template-columns:1fr}
  .pd-media{max-width:520px}
  .sol-grid,.team-grid{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .info-list>div{grid-template-columns:1fr;gap:6px}
}
@media (max-width:560px){
  .sol-grid,.team-grid,.steps{grid-template-columns:1fr}
  .spec-cols{grid-template-columns:1fr}
}