:root{--bg:#080a0d;--panel:#101318;--panel2:#151920;--line:#2b3038;--text:#f4f5f7;--muted:#a1a8b3;--orange:#ff5b13;--orange2:#ff8a3d;--max:1440px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}
.pd-nav{height:74px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,4vw,70px);position:sticky;top:0;background:rgba(8,10,13,.93);backdrop-filter:blur(14px);z-index:30}
.pd-brand{display:flex;align-items:center;gap:13px;padding:7px 14px 7px 10px;background:#fff;color:#111318;border:1px solid #e7e7e7;border-radius:3px;box-shadow:0 7px 24px rgba(0,0,0,.3);font-weight:900;letter-spacing:.08em}.pd-brand img{height:34px;max-width:180px;object-fit:contain}.pd-navlinks{display:flex;gap:26px;color:var(--muted);font-size:14px}.pd-navlinks a:hover{color:var(--orange)}
.pd-main{max-width:var(--max);margin:auto;padding:38px clamp(20px,4vw,70px) 90px}.pd-crumb{font:12px ui-monospace,monospace;color:var(--muted);letter-spacing:.1em;text-transform:uppercase;margin-bottom:22px}.pd-crumb b{color:var(--orange)}
.pd-hero{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(330px,.75fr);min-height:680px;border:1px solid var(--line);background:var(--panel);overflow:hidden}
.pd-stage{position:relative;min-height:680px;overflow:hidden;background:#020305}.pd-space{position:absolute;z-index:0;inset:0;overflow:hidden;background:radial-gradient(ellipse at 50% 52%,rgba(34,43,54,.34) 0,rgba(8,11,15,.72) 38%,#020305 76%)}.pd-space::before{content:"";position:absolute;width:170%;height:120%;left:-35%;bottom:-68%;transform:perspective(680px) rotateX(59deg);transform-origin:50% 0;background-image:linear-gradient(rgba(104,122,143,.19) 1px,transparent 1px),linear-gradient(90deg,rgba(104,122,143,.19) 1px,transparent 1px);background-size:46px 46px;box-shadow:inset 0 28px 60px #020305}.pd-space::after{content:"";position:absolute;left:0;right:0;top:58%;height:1px;background:linear-gradient(90deg,transparent,rgba(255,91,19,.2),rgba(255,91,19,.7),rgba(255,91,19,.2),transparent);box-shadow:0 0 26px rgba(255,91,19,.18)}.pd-axis{position:absolute;z-index:1;font:700 10px ui-monospace,monospace;letter-spacing:.12em;color:#67717f}.pd-axis.x{right:18px;top:59%;color:#ff6b2a}.pd-axis.y{left:51%;top:18px}.pd-axis.z{left:18px;bottom:18px}.pd-crosshair{position:absolute;z-index:1;left:50%;top:58%;width:18px;height:18px;transform:translate(-50%,-50%);border:1px solid rgba(255,91,19,.5);border-radius:50%}.pd-crosshair::before,.pd-crosshair::after{content:"";position:absolute;background:rgba(255,91,19,.5)}.pd-crosshair::before{width:34px;height:1px;left:-9px;top:8px}.pd-crosshair::after{width:1px;height:34px;left:8px;top:-9px}model-viewer{position:relative;z-index:2;width:100%;height:100%;min-height:680px;background:transparent;--progress-bar-color:var(--orange);--poster-color:transparent}.pd-status{position:absolute;z-index:6;left:22px;bottom:22px;padding:10px 12px;background:#080a0ddd;border-left:3px solid var(--orange);font:12px ui-monospace,monospace;color:#d6dae0}.pd-status.ready{display:none}
.pd-stage::before{content:"INTERACTIVE 3D";position:absolute;top:22px;left:22px;z-index:3;font:700 11px ui-monospace,monospace;letter-spacing:.18em;color:var(--orange);border:1px solid rgba(255,91,19,.45);padding:9px 12px;background:#080a0dcc}
.pd-tools{position:absolute;right:18px;bottom:18px;display:flex;gap:8px;z-index:5}.pd-tools button{border:1px solid #424852;background:#0b0d11df;color:#fff;padding:10px 13px;cursor:pointer}.pd-tools button:hover{border-color:var(--orange);color:var(--orange)}
.pd-info{padding:clamp(30px,4vw,62px);display:flex;flex-direction:column;justify-content:center;border-left:1px solid var(--line)}.pd-kicker{font:700 12px ui-monospace,monospace;color:var(--orange);letter-spacing:.18em}.pd-info h1{font-size:clamp(48px,6vw,86px);line-height:.92;margin:18px 0 10px;letter-spacing:-.05em}.pd-info h2{font-size:20px;margin:0 0 24px;color:#d9dde3;font-weight:600}.pd-desc{font-size:15px;line-height:1.85;color:var(--muted);margin:0 0 28px}.pd-cta{display:flex;gap:10px;flex-wrap:wrap}.pd-btn{padding:14px 18px;border:1px solid var(--line);font-weight:700;font-size:13px}.pd-btn.primary{background:var(--orange);border-color:var(--orange);color:#090909}.pd-btn:hover{transform:translateY(-1px)}
.pd-section{padding-top:70px}.pd-section-head{display:flex;align-items:end;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:26px}.pd-section-head span{font:700 11px ui-monospace,monospace;color:var(--orange);letter-spacing:.16em}.pd-section-head h3{font-size:34px;margin:6px 0 0}.pd-specgrid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.pd-spec{padding:28px;background:var(--panel);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.pd-spec small{display:block;color:var(--muted);margin-bottom:11px}.pd-spec strong{font-size:19px;line-height:1.35}.pd-featuregrid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.pd-feature{padding:24px;background:var(--panel);border:1px solid var(--line);display:grid;grid-template-columns:42px 1fr;gap:15px;align-items:start}.pd-feature i{width:42px;height:42px;display:grid;place-items:center;background:var(--orange);color:#0a0b0d;font:900 14px ui-monospace,monospace;font-style:normal}.pd-feature strong{display:block;font-size:16px;margin-bottom:7px}.pd-feature p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}.pd-usegrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.pd-use{background:var(--panel);border:1px solid var(--line);padding:24px;min-height:115px;display:flex;gap:15px;align-items:flex-start}.pd-use i{font:900 20px ui-monospace,monospace;color:var(--orange);font-style:normal}.pd-related{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.pd-card{position:relative;min-height:210px;border:1px solid var(--line);background:#101318;overflow:hidden}.pd-card img{width:100%;height:210px;object-fit:cover;display:block;transition:.4s}.pd-card span{position:absolute;left:16px;bottom:16px;padding:9px 12px;background:#080a0dde;border-left:3px solid var(--orange);font-weight:800}.pd-card:hover img{transform:scale(1.03)}
.pd-support-layout{display:grid;grid-template-columns:1fr 1fr;gap:14px}.pd-support-block{background:var(--panel);border:1px solid var(--line);padding:clamp(22px,3vw,34px)}.pd-support-label{margin:0 0 10px;color:var(--orange);font:700 11px ui-monospace,monospace;letter-spacing:.16em}.pd-support-block h4,.pd-resource-panel h4{margin:0 0 22px;font-size:21px;line-height:1.35}.pd-checklist{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}.pd-checklist li{display:grid;grid-template-columns:42px 1fr;gap:12px;align-items:center;min-height:55px;border-bottom:1px solid var(--line);color:#dce0e6}.pd-checklist b{color:var(--orange);font:700 11px ui-monospace,monospace}.pd-faq details{border-top:1px solid var(--line)}.pd-faq details:last-child{border-bottom:1px solid var(--line)}.pd-faq summary{position:relative;padding:17px 32px 17px 0;cursor:pointer;font-weight:700;list-style:none}.pd-faq summary::-webkit-details-marker{display:none}.pd-faq summary::after{content:"+";position:absolute;right:4px;top:14px;color:var(--orange);font:700 20px ui-monospace,monospace}.pd-faq details[open] summary::after{content:"−"}.pd-faq details p{margin:0;padding:0 28px 18px 0;color:var(--muted);font-size:13px;line-height:1.75}.pd-resource-panel{margin-top:14px;padding:clamp(24px,3vw,38px);border:1px solid rgba(255,91,19,.55);background:linear-gradient(120deg,rgba(255,91,19,.08),transparent 45%),var(--panel);display:grid;grid-template-columns:minmax(0,1fr) auto;gap:30px;align-items:center}.pd-resource-panel h4{margin-bottom:8px}.pd-resource-panel p:not(.pd-support-label){margin:0;color:var(--muted);line-height:1.7}.pd-resource-panel small{display:block;margin-top:9px;color:#737b87;line-height:1.6}.pd-resource-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.pd-resource-actions .pd-btn{min-width:150px;text-align:center}
.pd-video-head{align-items:end}.pd-video-head>p{max-width:560px;margin:0;color:var(--muted);font-size:14px;line-height:1.7}.pd-video-frame{position:relative;aspect-ratio:16/9;background:#020305;border:1px solid var(--line);overflow:hidden}.pd-video-frame video,.pd-video-frame iframe{display:block;width:100%;height:100%;border:0;background:#020305}.pd-video-frame video{object-fit:contain}
.pd-foot{border-top:1px solid var(--line);padding:28px clamp(20px,4vw,70px);color:var(--muted);display:flex;justify-content:space-between;font-size:12px}
@media(max-width:900px){.pd-navlinks{display:none}.pd-hero{grid-template-columns:1fr}.pd-stage,model-viewer{min-height:520px}.pd-info{border-left:0;border-top:1px solid var(--line)}.pd-specgrid{grid-template-columns:repeat(2,1fr)}.pd-featuregrid,.pd-usegrid,.pd-related,.pd-support-layout{grid-template-columns:1fr}.pd-resource-panel{grid-template-columns:1fr}.pd-resource-actions{justify-content:flex-start}.pd-info h1{font-size:54px}.pd-video-head{display:block}.pd-video-head>p{margin-top:14px}}
@media(max-width:520px){.pd-main{padding-left:12px;padding-right:12px}.pd-stage,model-viewer{min-height:430px}.pd-specgrid{grid-template-columns:1fr}.pd-info{padding:28px 22px}.pd-info h1{font-size:46px}.pd-feature{grid-template-columns:36px 1fr;padding:19px}.pd-feature i{width:36px;height:36px}.pd-section-head h3{font-size:28px}.pd-resource-actions{display:grid;width:100%;justify-content:stretch}.pd-resource-actions .pd-btn{width:100%}.pd-foot{display:block;line-height:2}}