:root{
  --bg:#0a0a0b; --panel:#111113; --panel2:#151518; --line:rgba(255,255,255,.09);
  --txt:#ececee; --muted:#9a9ca3; --dim:#6e7077;
  --accent:#c4161c; --accent-soft:rgba(196,22,28,.14);
  --max:1920px; --pad:clamp(18px,2.5vw,80px);
  --r:2px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--txt);
  font-family:Inter,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:min(var(--max),calc(100% - var(--pad)*2));margin:0 auto}
.eyebrow{
  font-size:11px;letter-spacing:.26em;text-transform:uppercase;color:var(--dim);
  display:flex;align-items:center;gap:10px;margin:0 0 18px;
}
.eyebrow:before{content:"";width:26px;height:1px;background:var(--accent)}
h1,h2,h3{margin:0;font-weight:650;letter-spacing:-.02em;line-height:1.08}
h1{font-size:clamp(38px,4.6vw,96px)}
h2{font-size:clamp(28px,3vw,60px)}
h3{font-size:20px;letter-spacing:-.01em}
p{margin:0}
.lead{font-size:clamp(16px,1.35vw,19px);color:var(--muted);max-width:62ch}

header.site{
  position:fixed;inset:0 0 auto 0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;
  padding:22px var(--pad);transition:background .3s,border-color .3s,padding .3s;
  border-bottom:1px solid transparent;
}
header.site.scrolled{background:rgba(10,10,11,.86);backdrop-filter:blur(14px);border-bottom-color:var(--line);padding:14px var(--pad)}
.brand{display:flex;align-items:baseline;gap:10px;font-weight:750;letter-spacing:.14em;font-size:17px}
.brand i{width:8px;height:8px;background:var(--accent);display:inline-block;transform:translateY(-2px)}
.brand small{font-weight:400;letter-spacing:.3em;font-size:9px;color:var(--dim)}
nav.main{display:flex;gap:34px;font-size:13.5px;letter-spacing:.02em}
nav.main a{color:var(--muted);transition:color .2s}
nav.main a:hover{color:var(--txt)}
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:13px 22px;
  border:1px solid var(--line);border-radius:var(--r);font-size:13px;letter-spacing:.06em;
  text-transform:uppercase;transition:.25s;background:transparent;color:var(--txt);cursor:pointer;
}
.btn:hover{border-color:rgba(255,255,255,.35);background:rgba(255,255,255,.04)}
.btn.primary{background:var(--accent);border-color:var(--accent)}
.btn.primary:hover{background:#a3121a;border-color:#a3121a}
.btn svg{width:14px;height:14px}

.hero{position:relative;min-height:clamp(560px,88vh,900px);display:flex;align-items:flex-end;overflow:hidden}
.hero .bg{position:absolute;inset:0}
.hero .bg img{width:100%;height:100%;object-fit:cover;object-position:60% 45%;transform:scale(1.04)}
.hero:after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,10,11,.96) 0%,rgba(10,10,11,.82) 38%,rgba(10,10,11,.25) 72%,rgba(10,10,11,.55) 100%),
             linear-gradient(0deg,var(--bg) 2%,transparent 42%);
}
.hero .inner{position:relative;z-index:2;padding:0 0 clamp(60px,8vh,110px);width:min(var(--max),calc(100% - var(--pad)*2));margin:0 auto}
.hero h1{max-width:15ch}
.hero .lead{margin-top:26px;color:#b9bbc2}
.hero .actions{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats div{background:var(--bg);padding:34px max(var(--pad), calc((100% - var(--max))/2))}
.stats b{display:block;font-size:clamp(26px,3vw,42px);font-weight:650;letter-spacing:-.03em}
.stats span{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim)}

section{padding:clamp(70px,9vw,140px) 0}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:clamp(34px,4vw,60px)}
.sec-head .lead{max-width:52ch}

.cats{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:22px}
.cat{position:relative;border:1px solid var(--line);background:var(--panel);overflow:hidden;transition:.35s}
.cat:hover{border-color:rgba(255,255,255,.22);transform:translateY(-3px)}
.cat .ph{aspect-ratio:4/3;overflow:hidden;background:#0e0e10}
.cat .ph img{width:100%;height:100%;object-fit:contain;background:#f5f5f6;transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.cat:hover .ph img{transform:scale(1.05)}
.cat .txt{padding:26px 24px 30px}
.cat .txt p{color:var(--muted);font-size:14.5px;margin-top:10px}
.cat .go{margin-top:18px;font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--dim);display:flex;gap:8px;align-items:center}
.cat:hover .go{color:var(--accent)}

.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{border:1px solid var(--line);background:var(--panel);transition:.3s;overflow:hidden}
.card:hover{border-color:rgba(255,255,255,.2);background:var(--panel2)}
.card .ph{aspect-ratio:4/3;overflow:hidden;background:#f5f5f6;position:relative}
.card .ph .ci{width:100%;height:100%;max-width:100%;object-fit:contain;transition:opacity .45s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.card .ph .alt{position:absolute;inset:0;opacity:0}
.card:hover .ph .alt{opacity:1}
.card:hover .ph .base{opacity:0}
.card:hover .ph .ci{transform:scale(1.03)}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.card:hover .ph img{transform:scale(1.04)}
.card .txt{padding:18px 18px 22px}
.card h3{font-size:15px;font-weight:600}
.card .spec{margin-top:8px;font-size:12px;color:var(--dim);letter-spacing:.04em}
.card .tag{font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}

.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,6vw,90px);align-items:center}
.split ul{list-style:none;padding:0;margin:30px 0 0;display:grid;gap:16px}
.split li{display:flex;gap:14px;color:var(--muted);font-size:15px}
.split li b{color:var(--txt);font-weight:600}
.split li:before{content:"";flex:0 0 6px;height:6px;margin-top:9px;background:var(--accent)}
.fig{border:1px solid var(--line);background:var(--panel)}
.fig img{width:100%}
.fig figcaption{padding:14px 16px;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);border-top:1px solid var(--line)}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.step{background:var(--bg);padding:32px 26px 38px}
.step em{font-style:normal;font-size:11px;letter-spacing:.24em;color:var(--accent)}
.step h3{margin:14px 0 10px;font-size:17px}
.step p{color:var(--muted);font-size:14px}

.cta{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:
  linear-gradient(90deg,rgba(10,10,11,.95) 0%,rgba(10,10,11,.78) 52%,rgba(10,10,11,.58) 100%),
  url("assets/img/workshop.webp") center/cover no-repeat,var(--panel)}
.cta .inner{position:relative;z-index:2}
.cta .inner{display:flex;justify-content:space-between;align-items:center;gap:40px;padding:clamp(48px,6vw,80px) 0;flex-wrap:wrap}

footer.site{border-top:1px solid var(--line);padding:60px 0 40px;color:var(--dim);font-size:13px}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
footer h4{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--txt);margin:0 0 16px}
footer a{color:var(--muted);display:block;margin-bottom:10px}
footer a:hover{color:var(--txt)}
.copy{display:flex;justify-content:space-between;gap:20px;padding-top:26px;border-top:1px solid var(--line);flex-wrap:wrap}

.phead{padding:clamp(118px,13vh,160px) 0 clamp(34px,4vw,56px);border-bottom:1px solid var(--line)}
.pdetail-head{padding:clamp(96px,10vh,120px) 0 0;border-bottom:0}
.crumbs{font-size:12px;color:var(--dim);letter-spacing:.08em;margin-bottom:18px}
.crumbs a:hover{color:var(--txt)}

.filters{display:flex;gap:10px;flex-wrap:wrap;margin:34px 0 40px}
.chip{border:1px solid var(--line);padding:9px 16px;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);cursor:pointer;transition:.2s;background:transparent}
.chip:hover{color:var(--txt);border-color:rgba(255,255,255,.3)}
.chip.active{background:var(--txt);color:#0a0a0b;border-color:var(--txt)}

.pdetail{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(30px,5vw,80px);align-items:start}
.pdetail .shot{border:1px solid var(--line);background:var(--panel);position:sticky;top:100px}
.pdetail .shot img{display:block;width:100%}
.shot-wrap{padding:18px}
.pdp-main{aspect-ratio:4/3;object-fit:contain;background:#f5f5f6;max-height:620px;margin:0 auto;cursor:zoom-in;width:100%}
.thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:8px;border-top:1px solid var(--line)}
.thumb{background:#f5f5f6;border:1px solid var(--line);padding:0;cursor:pointer;transition:.2s;position:relative;overflow:hidden}
.thumb img{aspect-ratio:1/1;object-fit:cover;display:block;opacity:.65;transition:.25s}
.thumb span{position:absolute;left:0;right:0;bottom:0;font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:#b9bbc2;background:rgba(0,0,0,.55);padding:4px 0;text-align:center}
.thumb:hover img{opacity:1}
.thumb.active{border-color:var(--accent)}
.thumb.active img{opacity:1}
.lb{position:fixed;inset:0;background:rgba(6,6,7,.94);display:none;align-items:center;justify-content:center;z-index:300;cursor:zoom-out}
.lb.on{display:flex}
.lb img{max-width:92vw;max-height:90vh;object-fit:contain;border:1px solid rgba(255,255,255,.12);background:#0d0d0f}
.lb-close{position:absolute;top:22px;right:26px;background:transparent;border:1px solid rgba(255,255,255,.25);color:#fff;width:42px;height:42px;font-size:24px;line-height:1;cursor:pointer}
.thumb img{cursor:zoom-in}
.shot-cap{padding:12px 16px;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.spec-table{width:100%;border-collapse:collapse;margin-top:26px;font-size:14px}
.spec-table td{padding:14px 0;border-bottom:1px solid var(--line);color:var(--muted)}
.spec-table td:first-child{width:42%;color:var(--dim);font-size:12px;letter-spacing:.12em;text-transform:uppercase}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.badge{font-size:11px;letter-spacing:.14em;text-transform:uppercase;border:1px solid var(--line);padding:8px 12px;color:var(--muted)}

.form{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:30px}
.form .full{grid-column:1/-1}
label{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);display:block;margin-bottom:8px}
input,textarea,select{
  width:100%;background:#0e0e10;border:1px solid var(--line);color:var(--txt);
  padding:13px 14px;font:inherit;font-size:14px;border-radius:1px;outline:none;
}
input:focus,textarea:focus,select:focus{border-color:rgba(255,255,255,.35)}
textarea{min-height:130px;resize:vertical}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}


/* ---------- light theme ---------- */
html[data-theme="light"]{
  --bg:#f4f4f2; --panel:#ffffff; --panel2:#fbfbfa; --line:rgba(15,15,18,.10);
  --txt:#15161a; --muted:#585b62; --dim:#8b8e96;
  --accent:#c4161b; --accent-soft:rgba(196,22,27,.10);
}
html[data-theme="light"] body{background:var(--bg);color:var(--txt)}
html[data-theme="light"] header.site.scrolled{background:rgba(244,244,242,.9)}
html[data-theme="light"] .hero:after{
  background:linear-gradient(90deg,#f4f4f2 0%,#f4f4f2 40%,rgba(244,244,242,.72) 55%,rgba(244,244,242,.12) 70%,rgba(244,244,242,0) 100%),
             linear-gradient(0deg,#f4f4f2 3%,transparent 38%);
}
html[data-theme="light"] .hero .bg img{filter:saturate(.95) contrast(1.04)}
html[data-theme="light"] header.site:not(.scrolled) nav.main a{color:#3c3f45}
html[data-theme="light"] header.site:not(.scrolled) .brand{color:#111}
html[data-theme="light"] header.site:not(.scrolled) .btn{color:#15161a;border-color:rgba(0,0,0,.18);background:rgba(255,255,255,.62);backdrop-filter:blur(6px)}
html[data-theme="light"] header.site:not(.scrolled) .btn.primary{color:#fff;background:var(--accent);border-color:var(--accent)}
html[data-theme="light"] .hero .lead{color:#3d4046}
html[data-theme="light"] .hero h1{color:#111}
html[data-theme="light"] .cat,html[data-theme="light"] .card{background:#fff}
html[data-theme="light"] .step{background:#fff}
html[data-theme="light"] .cta{background:radial-gradient(900px 320px at 12% 0%,rgba(196,22,27,.10),transparent 65%),#fff}
html[data-theme="light"] footer.site{background:#efefed;color:#5c5f66}
html[data-theme="light"] footer a{color:#4a4d54}
html[data-theme="light"] .fig,html[data-theme="light"] .pdetail .shot{background:#fff}
html[data-theme="light"] input,html[data-theme="light"] textarea,html[data-theme="light"] select{background:#fff;color:var(--txt)}
html[data-theme="light"] .chip.active{background:#15161a;color:#fff}
html[data-theme="light"] .badge{color:#4a4d54}
html[data-theme="light"] .btn:hover{border-color:rgba(0,0,0,.35);background:rgba(0,0,0,.035)}

/* ---------- hover polish ---------- */
.card{position:relative}
.card:after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .45s cubic-bezier(.2,.7,.2,1);
}
.card:hover:after{transform:scaleX(1)}
.card:hover h3{color:#fff}
html[data-theme="light"] .card:hover h3{color:#000}
.cat:after{
  content:"";position:absolute;inset:auto 0 0 0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .45s cubic-bezier(.2,.7,.2,1);
}
.cat:hover:after{transform:scaleX(1)}
nav.main a{position:relative}
nav.main a:after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:1px;background:var(--accent);
  transform:scaleX(0);transform-origin:right;transition:transform .35s ease;
}
nav.main a:hover:after{transform:scaleX(1);transform-origin:left}
.btn{position:relative;overflow:hidden}
.btn:before{
  content:"";position:absolute;inset:0;background:rgba(255,255,255,.08);
  transform:translateY(101%);transition:transform .35s ease;
}
.btn:hover:before{transform:none}
.theme-btn{padding:11px 16px;font-size:11px;letter-spacing:.14em}
@media(max-width:900px){.theme-btn{display:none}}

@media(max-width:1280px){
  .grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:1080px){
  .cats{grid-template-columns:1fr 1fr}
  .pdetail{grid-template-columns:1fr}
  .pdetail .shot{position:static}
}
@media(max-width:860px){
  .grid{grid-template-columns:1fr 1fr}
}

@media(max-width:620px){
  .stats>div,.step,.card,.cat{min-width:0}\n  .stats div{padding:24px 16px}
  body,p,h1,h2,h3,span,td{overflow-wrap:anywhere}
  :root{--pad:16px}
  html,body{overflow-x:hidden}
  .wrap,.hero .inner{width:100%;max-width:100%;padding-left:16px;padding-right:16px;box-sizing:border-box}
  .grid,.cats{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .form{grid-template-columns:1fr}
  h1{font-size:clamp(26px,7.2vw,34px)}
  h2{font-size:clamp(24px,6.4vw,32px)}
  .lead{font-size:15px}
  .hero{min-height:0;padding:86px 0 40px;align-items:flex-start}
  .hero .bg img{object-position:72% 42%;transform:scale(1.02)}
  .hero:after{background:linear-gradient(180deg,rgba(250,250,249,.95) 0%,rgba(250,250,249,.88) 45%,rgba(250,250,249,.97) 100%)!important}
  .hero .inner{padding:0 16px 0}
  html[data-theme="dark"] .hero:after{background:linear-gradient(180deg,rgba(10,10,11,.95) 0%,rgba(10,10,11,.88) 45%,rgba(10,10,11,.97) 100%)!important}
  .hero h1{max-width:none}
  .hero .inner{padding-bottom:48px}
  header.site{padding:14px 16px;gap:12px}
  header.site .btn{display:none}
  .brand{font-size:15px}
  .card,.cat,.ph,.txt{min-width:0}
  .card .ph img{max-width:100%;height:auto}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px}
  .thumbs{grid-template-columns:repeat(3,1fr)}
  .pdp-main{max-height:none}
  footer .cols{grid-template-columns:1fr}
}

@media(max-width:760px){
  nav.main{display:none}
  .grid{grid-template-columns:1fr 1fr}
  .cats{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  footer .cols{grid-template-columns:1fr 1fr}
  .form{grid-template-columns:1fr}
}