/* ============================================================
   HEHUI — Premium embroidery thread manufacturer
   Palette: ivory / soft white / deep charcoal / warm gray / terracotta
   ============================================================ */
:root{
  --ivory:#F5F2EB;
  --soft:#FBFAF7;
  --ink:#171717;
  --gray:#77736D;
  --accent:#B85C3A;
  --line:rgba(23,23,23,.16);
  --line-light:rgba(245,242,235,.22);
  --ease:cubic-bezier(.22,1,.36,1);
  --pad:clamp(20px,5vw,88px);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Archivo',Helvetica,Arial,sans-serif;
  background:var(--ivory);
  color:var(--ink);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:var(--accent);color:#fff}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit}

/* ---------- typography helpers ---------- */
.label{
  font-size:11px;letter-spacing:.32em;text-transform:uppercase;
  color:var(--gray);font-weight:500;
}
.label .accent{color:var(--accent)}
.h-display{
  font-weight:600;text-transform:uppercase;
  line-height:.96;letter-spacing:-.015em;
}
.h-xl{font-size:clamp(2.6rem,7.4vw,7rem)}
.h-lg{font-size:clamp(2.2rem,5.6vw,5.2rem)}
.h-md{font-size:clamp(1.7rem,3.6vw,3.2rem)}
.body-copy{
  color:var(--gray);font-size:clamp(15px,1.15vw,18px);
  max-width:56ch;line-height:1.75;
}

/* ---------- loader ---------- */
#loader{
  position:fixed;inset:0;z-index:200;background:var(--ink);
  display:flex;align-items:center;justify-content:center;
  transition:opacity .8s var(--ease),visibility .8s;
}
#loader .word{
  color:var(--ivory);font-size:clamp(2rem,6vw,4.2rem);font-weight:600;
  letter-spacing:.42em;text-transform:uppercase;overflow:hidden;
}
#loader .word span{display:inline-block;transform:translateY(110%);animation:riseIn .9s var(--ease) forwards}
#loader .word span:nth-child(2){animation-delay:.08s}
#loader .word span:nth-child(3){animation-delay:.16s}
#loader .word span:nth-child(4){animation-delay:.24s}
#loader .word span:nth-child(5){animation-delay:.32s}
#loader .word span:nth-child(6){animation-delay:.40s}
@keyframes riseIn{to{transform:translateY(0)}}
body.loaded #loader{opacity:0;visibility:hidden;pointer-events:none}

/* ---------- navigation ---------- */
#nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:26px var(--pad);
  transition:padding .5s var(--ease),background .5s var(--ease),border-color .5s;
  border-bottom:1px solid transparent;
}
#nav.scrolled{
  padding:14px var(--pad);
  background:rgba(245,242,235,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav-brand{display:block;line-height:1.1}
.nav-brand .mark{
  font-size:22px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  transition:font-size .5s var(--ease);
}
#nav.scrolled .nav-brand .mark{font-size:17px}
.nav-brand .sub{
  font-size:9px;letter-spacing:.24em;color:var(--gray);text-transform:uppercase;
  margin-top:3px;transition:opacity .4s;
}
#nav.scrolled .nav-brand .sub{opacity:.75}
.nav-links{display:flex;gap:clamp(18px,2.6vw,40px);align-items:center}
.nav-links a{
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;font-weight:500;
  color:var(--ink);position:relative;padding:4px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--ink);transition:width .45s var(--ease);
}
.nav-links a:hover::after{width:100%}
.nav-quote{
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:600;
  border:1px solid var(--ink);padding:12px 22px;white-space:nowrap;
  transition:background .4s,color .4s;
}
.nav-quote:hover{background:var(--ink);color:var(--ivory)}
#navToggle{
  display:none;background:none;border:none;cursor:pointer;padding:8px;z-index:110;
}
#navToggle span{
  display:block;width:26px;height:1.5px;background:var(--ink);margin:6px 0;
  transition:transform .4s var(--ease),opacity .3s;
}
body.menu-open #navToggle span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
body.menu-open #navToggle span:nth-child(2){opacity:0}
body.menu-open #navToggle span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* mobile menu overlay */
#mobileMenu{
  position:fixed;inset:0;z-index:99;background:var(--ivory);
  display:flex;flex-direction:column;justify-content:center;padding:0 var(--pad);
  opacity:0;visibility:hidden;transition:opacity .5s var(--ease),visibility .5s;
}
body.menu-open #mobileMenu{opacity:1;visibility:visible}
#mobileMenu a{
  font-size:clamp(2rem,9vw,3.4rem);font-weight:600;text-transform:uppercase;
  line-height:1.25;letter-spacing:-.01em;
  border-bottom:1px solid var(--line);padding:14px 0;
  display:flex;justify-content:space-between;align-items:center;
}
#mobileMenu a .arrow{font-weight:400;color:var(--gray)}
#mobileMenu .mm-quote{margin-top:36px;border:1px solid var(--ink);padding:18px;
  text-align:center;font-size:13px;letter-spacing:.18em;text-transform:uppercase;font-weight:600}

/* ---------- reveal system ---------- */
.rv{opacity:0;transform:translateY(46px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.1s}.rv-d2{transition-delay:.2s}.rv-d3{transition-delay:.3s}
.rv-d4{transition-delay:.4s}.rv-d5{transition-delay:.5s}.rv-d6{transition-delay:.6s}
.line-mask{display:block;overflow:hidden}
.line-mask>span{
  display:block;transform:translateY(105%);
  transition:transform 1.1s var(--ease);
}
.in .line-mask>span,.line-mask.in>span{transform:translateY(0)}
.line-mask:nth-child(2)>span{transition-delay:.1s}
.line-mask:nth-child(3)>span{transition-delay:.2s}
.line-mask:nth-child(4)>span{transition-delay:.3s}
.img-reveal{overflow:hidden;position:relative}
.img-reveal::after{
  content:"";position:absolute;inset:0;background:var(--ivory);
  transform:scaleY(1);transform-origin:top;
  transition:transform 1.2s var(--ease);
}
.img-reveal.in::after{transform:scaleY(0)}
.img-reveal img{transform:scale(1.08);transition:transform 1.6s var(--ease)}
.img-reveal.in img{transform:scale(1)}

/* ---------- section scaffolding ---------- */
section{position:relative}
.wrap{max-width:1600px;margin:0 auto;padding:0 var(--pad)}
.sect{padding:clamp(90px,13vh,180px) 0}
.sect-head{display:grid;grid-template-columns:1fr;gap:clamp(28px,4vw,56px)}
.sect-head .label{margin-bottom:clamp(18px,2.5vw,34px)}

/* ---------- hero ---------- */
#hero{
  height:100svh;min-height:640px;position:relative;
  display:flex;flex-direction:column;justify-content:flex-end;
  overflow:hidden;
}
.hero-media{position:absolute;inset:0;overflow:hidden}
.hero-media img{
  width:100%;height:100%;object-fit:cover;
  transform:scale(1.12);
  transition:transform 2.4s var(--ease);
  will-change:transform;
}
body.loaded .hero-media img{transform:scale(1.02)}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to bottom,rgba(23,23,23,.18) 0%,rgba(23,23,23,.05) 40%,rgba(23,23,23,.55) 100%);
}
.hero-media::before{
  content:"";position:absolute;inset:0;background:var(--ivory);z-index:2;
  transform-origin:bottom;transform:scaleY(1);
  transition:transform 1.6s var(--ease) .35s;
}
body.loaded .hero-media::before{transform:scaleY(0)}
.hero-inner{
  position:relative;z-index:3;color:var(--soft);
  padding:0 var(--pad) clamp(36px,6vh,72px);
  max-width:1600px;margin:0 auto;width:100%;
}
.hero-label{
  font-size:11px;letter-spacing:.34em;text-transform:uppercase;color:rgba(251,250,247,.85);
  margin-bottom:clamp(20px,3vh,36px);
  opacity:0;transform:translateY(16px);
  transition:opacity 1s var(--ease) 1s,transform 1s var(--ease) 1s;
}
body.loaded .hero-label{opacity:1;transform:none}
#hero h1{
  font-size:clamp(3.4rem,11.5vw,10.8rem);font-weight:600;text-transform:uppercase;
  line-height:.92;letter-spacing:-.02em;color:var(--soft);
  text-shadow:0 2px 40px rgba(23,23,23,.25);
}
#hero h1 .line-mask{display:block;overflow:hidden}
#hero h1 .line-mask span{
  display:block;transform:translateY(110%);
  transition:transform 1.2s var(--ease);
}
#hero h1 .line-mask:nth-child(1) span{transition-delay:1.15s}
#hero h1 .line-mask:nth-child(2) span{transition-delay:1.28s}
#hero h1 .line-mask:nth-child(3) span{transition-delay:1.41s}
body.loaded #hero h1 .line-mask span{transform:translateY(0)}
.hero-sub{
  margin-top:clamp(22px,3.4vh,40px);max-width:44ch;
  color:rgba(251,250,247,.9);font-size:clamp(14px,1.2vw,18px);line-height:1.75;
  opacity:0;transform:translateY(20px);
  transition:opacity 1s var(--ease) 1.8s,transform 1s var(--ease) 1.8s;
}
body.loaded .hero-sub{opacity:1;transform:none}
.hero-ctas{
  display:flex;gap:18px;flex-wrap:wrap;margin-top:clamp(26px,4vh,44px);
  opacity:0;transform:translateY(20px);
  transition:opacity 1s var(--ease) 2.1s,transform 1s var(--ease) 2.1s;
}
body.loaded .hero-ctas{opacity:1;transform:none}
.btn{
  display:inline-flex;align-items:center;gap:12px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;
  padding:17px 30px;border:1px solid transparent;cursor:pointer;background:none;
  transition:background .4s,color .4s,border-color .4s;
}
.btn .arr{transition:transform .4s var(--ease);font-weight:400}
.btn:hover .arr{transform:translateX(6px)}
.btn-solid{background:var(--soft);color:var(--ink);border-color:var(--soft)}
.btn-solid:hover{background:transparent;color:var(--soft)}
.btn-ghost{border-color:rgba(251,250,247,.55);color:var(--soft)}
.btn-ghost:hover{background:rgba(251,250,247,.12);border-color:var(--soft)}
.btn-ink{border-color:var(--ink);color:var(--ink)}
.btn-ink:hover{background:var(--ink);color:var(--ivory)}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-accent:hover{background:var(--ink);border-color:var(--ink)}
.hero-stats{
  position:relative;z-index:3;
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid rgba(251,250,247,.28);
  color:var(--soft);
  max-width:1600px;margin:0 auto;width:100%;
  padding:clamp(18px,3vh,30px) var(--pad) clamp(24px,4vh,40px);
  opacity:0;transition:opacity 1.2s var(--ease) 2.4s;
}
body.loaded .hero-stats{opacity:1}
.hero-stats .stat{display:flex;flex-direction:column;gap:6px;padding-right:20px}
.hero-stats .stat+.stat{border-left:1px solid rgba(251,250,247,.28);padding-left:clamp(16px,3vw,40px)}
.hero-stats .num{
  font-size:clamp(1.1rem,2.2vw,1.7rem);font-weight:600;letter-spacing:.02em;
}
.hero-stats .cap{font-size:10px;letter-spacing:.26em;color:rgba(251,250,247,.72);text-transform:uppercase}
.scroll-hint{
  position:absolute;right:var(--pad);bottom:clamp(120px,18vh,170px);z-index:3;
  writing-mode:vertical-rl;font-size:10px;letter-spacing:.4em;text-transform:uppercase;
  color:rgba(251,250,247,.7);display:flex;align-items:center;gap:14px;
  opacity:0;transition:opacity 1s var(--ease) 2.6s;
}
body.loaded .scroll-hint{opacity:1}
.scroll-hint::after{
  content:"";width:1px;height:56px;background:rgba(251,250,247,.5);
  animation:hintDrop 2.2s var(--ease) infinite;
}
@keyframes hintDrop{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- 01 intro ---------- */
#about{background:var(--soft);margin-top:0;z-index:4}
.intro-grid{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:clamp(40px,6vw,110px);align-items:end;
}
.intro-copy p+p{margin-top:1.4em}
.intro-copy .body-copy{max-width:58ch}
.bignum-block{
  border-top:1px solid var(--line);padding-top:26px;
}
.bignum{
  font-size:clamp(5rem,11vw,11rem);font-weight:600;line-height:1;letter-spacing:-.03em;
}
.bignum-block .cap{
  font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:var(--gray);margin-top:10px;
}
.intro-photo{position:relative}
.intro-photo img{width:100%;height:clamp(420px,72vh,760px);object-fit:cover}
.intro-photo .tag{
  position:absolute;left:-1px;bottom:-1px;background:var(--ivory);
  padding:14px 22px;font-size:10px;letter-spacing:.28em;text-transform:uppercase;color:var(--gray);
}

/* ---------- factory-direct ---------- */
#model{background:var(--ivory)}
.model-grid{
  display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);
  gap:clamp(44px,6vw,110px);align-items:start;
}
.model-copy p+p{margin-top:1.4em}
.journey{margin-top:clamp(36px,5vh,60px);position:relative}
.journey ol{list-style:none;position:relative}
.journey ol::before{
  content:"";position:absolute;left:11px;top:12px;bottom:12px;width:1px;
  background:var(--line);
}
.journey .progress{
  position:absolute;left:11px;top:12px;width:1px;height:0;
  background:var(--accent);transition:height 2.4s var(--ease);
}
.journey.in .progress{height:calc(100% - 24px)}
.journey li{
  position:relative;padding:0 0 clamp(26px,4vh,44px) 52px;
}
.journey li:last-child{padding-bottom:0}
.journey li::before{
  content:"";position:absolute;left:6px;top:7px;width:11px;height:11px;border-radius:50%;
  background:var(--ivory);border:1.5px solid var(--gray);
  transition:background .5s,border-color .5s,transform .5s var(--ease);
}
.journey.in li::before{background:var(--accent);border-color:var(--accent);transform:scale(1)}
.journey li:nth-child(1)::before{transition-delay:.05s}
.journey li:nth-child(2)::before{transition-delay:.5s}
.journey li:nth-child(3)::before{transition-delay:.95s}
.journey li:nth-child(4)::before{transition-delay:1.4s}
.journey li:nth-child(5)::before{transition-delay:1.85s}
.journey .j-name{
  font-size:13px;letter-spacing:.22em;font-weight:600;text-transform:uppercase;
}
.journey .j-sub{font-size:13px;color:var(--gray);margin-top:4px}

/* ---------- products ---------- */
#products{background:var(--soft)}
.prod-list{margin-top:clamp(48px,7vh,90px);border-top:1px solid var(--line)}
.prod-panel{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:clamp(28px,4vw,72px);align-items:center;
  padding:clamp(34px,5vh,58px) 0;border-bottom:1px solid var(--line);
  cursor:pointer;
}
.prod-panel .p-media{overflow:hidden;aspect-ratio:16/10;background:#e8e4da}
.prod-panel .p-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 1.1s var(--ease);
}
.prod-panel:hover .p-media img{transform:scale(1.05)}
.p-info .p-idx{
  font-size:11px;letter-spacing:.3em;color:var(--accent);font-weight:600;
  margin-bottom:14px;display:block;
}
.p-info h3{
  font-size:clamp(1.9rem,4.4vw,4rem);font-weight:600;text-transform:uppercase;
  line-height:1;letter-spacing:-.015em;
  transition:transform .6s var(--ease);
}
.prod-panel:hover .p-info h3{transform:translateX(14px)}
.p-info .p-sub{
  color:var(--gray);margin-top:12px;font-size:clamp(14px,1.1vw,17px);
}
.p-info .p-line{
  height:1px;background:var(--ink);width:44px;margin-top:clamp(18px,3vh,28px);
  transition:width .7s var(--ease),background .5s;
}
.prod-panel:hover .p-info .p-line{width:120px;background:var(--accent)}
.p-info .p-arrow{
  display:inline-flex;align-items:center;gap:10px;margin-top:clamp(18px,3vh,28px);
  font-size:11px;letter-spacing:.22em;text-transform:uppercase;font-weight:600;
  opacity:0;transform:translateX(-10px);
  transition:opacity .5s,transform .6s var(--ease),color .4s;
}
.prod-panel:hover .p-info .p-arrow{opacity:1;transform:translateX(0)}
.p-info .p-arrow:hover{color:var(--accent)}

/* ---------- color & customization ---------- */
#color{
  position:relative;color:var(--soft);
  background:url('/wp-content/themes/purepress/assets/img/color-threads.jpg') center/cover no-repeat fixed;
  min-height:110vh;display:flex;align-items:center;
}
#color::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to bottom,rgba(23,23,23,.62),rgba(23,23,23,.34) 45%,rgba(23,23,23,.66));
}
@media(max-width:900px){#color{background-attachment:scroll}}
#color .wrap{position:relative;z-index:2;padding-top:clamp(100px,15vh,200px);padding-bottom:clamp(100px,15vh,200px)}
#color .label{color:rgba(251,250,247,.75)}
#color .h-xl{color:var(--soft);max-width:12ch}
#color .body-copy{color:rgba(251,250,247,.88);max-width:48ch}
.color-chips{margin-top:clamp(40px,6vh,64px);display:flex;flex-wrap:wrap;gap:0;border-top:1px solid rgba(251,250,247,.3);border-bottom:1px solid rgba(251,250,247,.3)}
.color-chips .chip{
  flex:1 1 auto;text-align:center;padding:20px 18px;
  font-size:11px;letter-spacing:.24em;text-transform:uppercase;font-weight:600;
  color:rgba(251,250,247,.85);border-right:1px solid rgba(251,250,247,.3);
  transition:background .4s,color .4s;cursor:default;
}
.color-chips .chip:last-child{border-right:none}
.color-chips .chip:hover,.color-chips .chip.on{background:rgba(251,250,247,.14);color:#fff}
#color .support{margin-top:26px;font-size:13px;color:rgba(251,250,247,.72);max-width:52ch}

/* ---------- applications ---------- */
#applications{background:var(--ivory);overflow:hidden}
.apps-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap}
.apps-note{color:var(--gray);font-size:11px;letter-spacing:.26em;text-transform:uppercase}
.apps-strip{
  display:flex;gap:clamp(16px,2vw,28px);
  margin-top:clamp(44px,6vh,72px);
  overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px var(--pad) 26px;margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);
  scrollbar-width:thin;scrollbar-color:var(--gray) transparent;
  cursor:grab;
}
.apps-strip.dragging{cursor:grabbing;scroll-snap-type:none}
.app-card{
  flex:0 0 clamp(260px,30vw,430px);scroll-snap-align:start;
}
.app-card .a-media{overflow:hidden;aspect-ratio:3/4;background:#e8e4da;position:relative}
.app-card .a-media img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
.app-card:hover .a-media img{transform:scale(1.04)}
.app-card .a-name{
  display:flex;justify-content:space-between;align-items:baseline;
  padding-top:18px;border-top:1px solid var(--line);margin-top:18px;
  font-size:13px;letter-spacing:.24em;font-weight:600;text-transform:uppercase;
}
.app-card .a-name .no{color:var(--gray);font-weight:400;letter-spacing:.1em}

/* ---------- techniques (dark) ---------- */
#capabilities{
  background:var(--ink);color:var(--ivory);
}
#capabilities .label{color:rgba(245,242,235,.6)}
#capabilities .body-copy{color:rgba(245,242,235,.7)}
.tech-grid{
  margin-top:clamp(50px,7vh,84px);
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line-light);
}
.tech-cell{
  background:var(--ink);padding:clamp(26px,3vw,44px) clamp(20px,2.4vw,36px);
  display:flex;flex-direction:column;min-height:420px;
  transition:background .5s;
}
.tech-cell:hover{background:#211f1c}
.tech-cell svg{width:34px;height:34px;stroke:rgba(245,242,235,.85);fill:none;stroke-width:1.2;margin-bottom:22px}
.tech-cell .a-media{overflow:hidden;aspect-ratio:1/1;background:#262421;margin-bottom:22px}
.tech-cell .a-media img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
.tech-cell:hover .a-media img{transform:scale(1.05)}
.tech-cell h3{
  font-size:14px;letter-spacing:.26em;text-transform:uppercase;font-weight:600;margin-bottom:10px;
}
.tech-cell p{font-size:13.5px;color:rgba(245,242,235,.62);line-height:1.7}

/* ---------- manufacturing ---------- */
#manufacturing{background:var(--ivory)}
.mfg-photo{margin-top:clamp(50px,7vh,84px)}
.mfg-photo img{width:100%;height:clamp(320px,58vh,640px);object-fit:cover}
.mfg-photo img{will-change:transform}
.numbers-strip{
  display:flex;align-items:stretch;gap:0;margin-top:clamp(50px,8vh,96px);
  overflow-x:auto;scroll-snap-type:x mandatory;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  scrollbar-width:none;
}
.numbers-strip::-webkit-scrollbar{display:none}
.num-item{
  flex:1 0 auto;min-width:min(300px,80vw);scroll-snap-align:center;
  padding:clamp(34px,5vh,64px) clamp(24px,3vw,48px);
  display:flex;flex-direction:column;justify-content:center;gap:12px;
  border-right:1px solid var(--line);
}
.num-item:last-child{border-right:none}
.num-item .n{
  font-size:clamp(4rem,8.5vw,8.6rem);font-weight:600;line-height:1;letter-spacing:-.03em;
}
.num-item .n .unit{font-size:.32em;letter-spacing:0;color:var(--gray);font-weight:500;margin-left:6px}
.num-item .c{font-size:10px;letter-spacing:.28em;text-transform:uppercase;color:var(--gray)}
.num-item .seq{font-size:10px;letter-spacing:.28em;color:var(--accent);font-weight:600}

/* ---------- production process ---------- */
#process{background:var(--soft)}
.process-wrap{position:relative;margin-top:clamp(50px,8vh,96px)}
.process-line{
  position:absolute;left:clamp(8px,1.4vw,20px);top:0;bottom:0;width:1px;background:var(--line);
}
.process-line .fill{
  position:absolute;top:0;left:0;width:100%;height:0;background:var(--accent);
  transition:height .2s linear;
}
.step{
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,3fr) minmax(0,5fr);
  gap:clamp(24px,4vw,70px);align-items:center;
  padding:clamp(36px,6vh,70px) 0 clamp(36px,6vh,70px) clamp(48px,7vw,110px);
  position:relative;
}
.step+.step{border-top:1px solid var(--line)}
.step::before{
  content:"";position:absolute;left:calc(clamp(8px,1.4vw,20px) - 5px);top:clamp(52px,8vh,96px);
  width:11px;height:11px;border-radius:50%;
  background:var(--soft);border:1.5px solid var(--gray);
  transition:background .5s,border-color .5s;
}
.step.active::before{background:var(--accent);border-color:var(--accent)}
.step .s-no{
  font-size:clamp(2.6rem,5.5vw,5.4rem);font-weight:600;line-height:1;letter-spacing:-.02em;
  color:var(--ink);transition:color .5s,opacity .5s;opacity:.28;
}
.step.active .s-no{opacity:1}
.step.active .s-no em{color:var(--accent);font-style:normal}
.step .s-body{transition:opacity .5s;opacity:.55}
.step.active .s-body{opacity:1}
.step .s-body h3{font-size:14px;letter-spacing:.24em;text-transform:uppercase;font-weight:600;margin-bottom:10px}
.step .s-body p{font-size:14px;color:var(--gray);line-height:1.7;max-width:30ch}
.step .s-media{overflow:hidden;aspect-ratio:16/10;background:#e8e4da}
.step .s-media img{width:100%;height:100%;object-fit:cover;transform:scale(1.05);transition:transform 1.4s var(--ease),filter .8s;filter:saturate(.85) brightness(.98)}
.step.active .s-media img{transform:scale(1);filter:none}

/* ---------- why hehui ---------- */
#why{background:var(--ivory)}
.principles{
  margin-top:clamp(50px,8vh,90px);
  display:grid;grid-template-columns:repeat(3,1fr);  gap:1px;background:var(--line);
  border:1px solid var(--line);
}
.pr{
  background:var(--ivory);padding:clamp(28px,3.4vw,52px);min-height:230px;
  display:flex;flex-direction:column;justify-content:space-between;gap:26px;
  transition:background .5s;
}
.pr:hover{background:var(--soft)}
.pr .p-no{font-size:10px;letter-spacing:.3em;color:var(--accent);font-weight:600}
.pr h3{font-size:15px;letter-spacing:.22em;text-transform:uppercase;font-weight:600}
.pr p{font-size:13.5px;color:var(--gray);line-height:1.7}

/* ---------- export ---------- */
#export{background:var(--soft)}
.export-grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:clamp(44px,6vw,110px);align-items:center}
.map-box svg{width:100%;height:auto;display:block}
.route{stroke:var(--accent);stroke-width:1.4;fill:none;stroke-dasharray:6 7;opacity:0;transition:opacity 1.2s}
.map-box.in .route{opacity:1;animation:dashMove 26s linear infinite}
@keyframes dashMove{to{stroke-dashoffset:-260}}
.port{fill:var(--ink)}
.port-ring{fill:none;stroke:var(--accent);stroke-width:1;opacity:0;transform-origin:center;transform-box:fill-box}
.map-box.in .port-ring{animation:ringPop 1s var(--ease) forwards}
.map-box.in .port-ring:nth-of-type(1){animation-delay:.2s}
.map-box.in .port-ring:nth-of-type(2){animation-delay:.9s}
.map-box.in .port-ring:nth-of-type(3){animation-delay:1.6s}
@keyframes ringPop{from{opacity:.9;transform:scale(.4)}to{opacity:0;transform:scale(1.9)}}
.port-label{font-size:9px;letter-spacing:.22em;fill:var(--ink);font-family:'Archivo',sans-serif;font-weight:600;text-transform:uppercase}
.globe-line{stroke:var(--line);stroke-width:1;fill:none}
.export-steps{margin-top:clamp(40px,6vh,64px);display:flex;flex-wrap:wrap;row-gap:16px;align-items:center}
.export-steps .es{
  font-size:11px;letter-spacing:.24em;font-weight:600;text-transform:uppercase;
  padding:12px 20px;border:1px solid var(--line);background:var(--ivory);
  transition:border-color .4s,color .4s;
}
.export-steps .es:hover{border-color:var(--accent);color:var(--accent)}
.export-steps .sep{color:var(--accent);padding:0 10px;font-size:12px}

/* ---------- factory visit ---------- */
#visit{position:relative;color:var(--soft);background:var(--ink)}
#visit .bg{position:absolute;inset:0;overflow:hidden}
#visit .bg img{width:100%;height:118%;object-fit:cover;opacity:.62;will-change:transform}
#visit .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(to bottom,rgba(23,23,23,.55),rgba(23,23,23,.35) 50%,rgba(23,23,23,.78))}
#visit .wrap{position:relative;z-index:2;padding-top:clamp(110px,18vh,220px);padding-bottom:clamp(110px,18vh,220px)}
#visit .label{color:rgba(251,250,247,.75)}
#visit .h-lg{color:var(--soft);max-width:14ch}
#visit .body-copy{color:rgba(251,250,247,.85)}
#visit .btn-ghost{border-color:rgba(251,250,247,.55);color:var(--soft)}
#visit .btn-ghost:hover{background:rgba(251,250,247,.14);border-color:var(--soft)}

/* ---------- specifications ---------- */
#specs{background:var(--ivory)}
.spec-list{margin-top:clamp(48px,7vh,84px);border-top:1px solid var(--line)}
.spec-row{
  display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);align-items:center;
  gap:clamp(20px,4vw,60px);padding:clamp(28px,4.5vh,52px) 0;border-bottom:1px solid var(--line);
  transition:padding-left .5s var(--ease);
}
.spec-row:hover{padding-left:18px}
.spec-row .code{
  font-size:clamp(2.2rem,5.6vw,5.4rem);font-weight:600;text-transform:uppercase;
  letter-spacing:-.02em;line-height:1;transition:color .4s;
}
.spec-row:hover .code{color:var(--accent)}
.spec-row .desc{color:var(--gray);font-size:clamp(13px,1.1vw,16px);letter-spacing:.08em;text-transform:uppercase}

/* ---------- egypt ---------- */
#egypt{background:var(--soft)}
.egypt-inner{max-width:900px}
#egypt .h-xl{max-width:12ch}

/* ---------- final CTA ---------- */
#cta{background:var(--ivory);text-align:left}
#cta .wrap{max-width:1300px}
#cta .h-xl{max-width:15ch}
#cta .body-copy{margin-top:clamp(28px,4vh,44px)}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:clamp(36px,5vh,56px)}
.cta-phone{
  margin-top:clamp(30px,4vh,44px);font-size:clamp(1.2rem,2.4vw,1.9rem);font-weight:500;
  letter-spacing:.04em;
}
.cta-phone a{border-bottom:1px solid var(--line);transition:border-color .4s,color .4s}
.cta-phone a:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- inquiry form ---------- */
#contact{background:var(--soft)}
.form-grid{
  margin-top:clamp(50px,7vh,84px);
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(26px,3.6vw,56px) clamp(30px,4vw,64px);
}
.field{display:flex;flex-direction:column;gap:10px}
.field.full{grid-column:1/-1}
.field label{
  font-size:10px;letter-spacing:.28em;text-transform:uppercase;color:var(--gray);font-weight:600;
}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:15px;color:var(--ink);background:transparent;
  border:none;border-bottom:1px solid var(--line);padding:12px 2px;
  outline:none;border-radius:0;
  transition:border-color .4s;
}
.field select{cursor:pointer;-webkit-appearance:none;appearance:none;
  background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="6" viewBox="0 0 10 6"><path d="M1 1l4 4 4-4" fill="none" stroke="%2377736D" stroke-width="1.2"/></svg>') no-repeat right 4px center;
}
.field textarea{resize:vertical;min-height:110px}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--ink)}
.field input::placeholder,.field textarea::placeholder{color:#b5b0a8}
.form-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:10px}
.form-note{font-size:12px;color:var(--gray)}

/* ---------- contact info ---------- */
#contact-info{background:var(--ivory);padding-bottom:clamp(90px,13vh,180px)}
.contact-grid{
  display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.c-item{background:var(--ivory);padding:clamp(26px,3vw,44px) clamp(18px,2vw,32px)}
.c-item .c-k{font-size:10px;letter-spacing:.28em;text-transform:uppercase;color:var(--gray);font-weight:600;margin-bottom:14px}
.c-item .c-v{font-size:14px;line-height:1.7;word-break:break-word}
.c-item a.c-v{border-bottom:1px solid transparent;transition:color .4s}
.c-item a.c-v:hover{color:var(--accent)}

/* ---------- footer ---------- */
footer{background:var(--ink);color:var(--ivory)}
footer .wrap{padding-top:clamp(70px,10vh,130px);padding-bottom:34px}
.foot-top{display:flex;justify-content:space-between;gap:50px;flex-wrap:wrap}
.foot-mark{
  font-size:clamp(4.4rem,13vw,12rem);font-weight:600;letter-spacing:.06em;
  line-height:.9;text-transform:uppercase;color:var(--ivory);
}
.foot-state{color:rgba(245,242,235,.6);font-size:14px;margin-top:22px;max-width:32ch;line-height:1.7}
.foot-cols{display:flex;gap:clamp(40px,6vw,110px);flex-wrap:wrap}
.foot-col .f-k{font-size:10px;letter-spacing:.28em;text-transform:uppercase;color:rgba(245,242,235,.5);font-weight:600;margin-bottom:18px}
.foot-col a,.foot-col .f-v{
  display:block;font-size:13.5px;color:rgba(245,242,235,.82);padding:5px 0;
  transition:color .4s;line-height:1.6;
}
.foot-col a:hover{color:var(--accent)}
.foot-bottom{
  margin-top:clamp(60px,9vh,110px);padding-top:26px;border-top:1px solid var(--line-light);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:11px;letter-spacing:.14em;color:rgba(245,242,235,.5);text-transform:uppercase;
}

/* ---------- language dropdown ---------- */
.nav-right{display:flex;align-items:center;gap:16px}
.lang-dd{position:relative}
.lang-btn{
  display:flex;align-items:center;gap:9px;background:none;border:1px solid transparent;
  padding:10px 13px;cursor:pointer;font-family:inherit;color:var(--ink);
  font-size:11px;letter-spacing:.2em;font-weight:600;text-transform:uppercase;
  transition:border-color .35s,padding .5s var(--ease);
}
#nav.scrolled .lang-btn{padding:8px 11px}
.lang-btn:hover{border-color:var(--line)}
.lang-btn svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.4;flex:none}
.lang-btn .chev{transition:transform .4s var(--ease)}
.lang-dd.open .chev{transform:rotate(180deg)}
.lang-menu{
  position:absolute;top:calc(100% + 10px);right:0;min-width:250px;
  background:var(--soft);border:1px solid var(--line);list-style:none;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .35s var(--ease),transform .35s var(--ease),visibility .35s;
  z-index:130;max-height:min(60vh,480px);overflow:auto;
  box-shadow:0 18px 50px rgba(23,23,23,.10);
}
.lang-dd.open .lang-menu{opacity:1;visibility:visible;transform:none}
.lang-menu li{
  padding:13px 18px;font-size:12.5px;letter-spacing:.06em;cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  border-bottom:1px solid var(--line);transition:background .3s,color .3s;
}
.lang-menu li:last-child{border-bottom:none}
.lang-menu li:hover{background:var(--ivory);color:var(--accent)}
.lang-menu li.active{color:var(--accent)}
.lang-menu li .code{font-size:10px;letter-spacing:.22em;color:var(--gray);font-weight:600}
.lang-menu li.active .code,.lang-menu li:hover .code{color:var(--accent)}
.lang-menu li .native{color:var(--gray);font-size:11px}
.lang-menu li.active,.lang-menu li.active .native{color:var(--accent)}

/* ---------- bottom floating social rail ---------- */
.social-rail{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  display:flex;flex-direction:row;justify-content:center;
  background:rgba(251,250,247,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
}
.rail-item{
  position:relative;width:80px;height:80px;display:flex;align-items:center;justify-content:center;
  color:#000000;text-decoration:none;transition:color .35s,background .35s;
}
.rail-item + .rail-item{border-left:1px solid var(--line)}
.rail-item svg{width:34px;height:34px;display:block;fill:currentColor}
.rail-item:hover{color:var(--accent);background:rgba(184,92,58,.07)}
.rail-item .tip{
  position:absolute;bottom:calc(100% + 10px);left:50%;
  transform:translateX(-50%) translateY(6px);
  white-space:nowrap;font-size:10px;letter-spacing:.22em;text-transform:uppercase;font-weight:600;
  background:var(--ink);color:var(--ivory);padding:6px 11px;
  opacity:0;pointer-events:none;transition:opacity .3s,transform .3s var(--ease);
}
.rail-item:hover .tip{opacity:1;transform:translateX(-50%) translateY(0)}
body{padding-bottom:80px}
@media(max-width:640px){
  .rail-item{width:calc(100%/7);max-width:56px;height:56px}
  .rail-item svg{width:22px;height:22px}
  body{padding-bottom:56px}
}

/* ---------- responsive ---------- */
@media(max-width:1100px){
  .tech-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:repeat(3,1fr)}
  .principles{grid-template-columns:repeat(2,1fr)}
  .step{grid-template-columns:minmax(0,3fr) minmax(0,6fr)}
  .step .s-media{grid-column:1/-1;order:-1}
}
@media(max-width:900px){
  .nav-links,.nav-quote{display:none}
  #navToggle{display:block}
  .intro-grid,.model-grid,.export-grid{grid-template-columns:1fr}
  .prod-panel{grid-template-columns:1fr}
  .prod-panel .p-media{aspect-ratio:16/9}
  .spec-row{grid-template-columns:1fr;gap:10px}
  .form-grid{grid-template-columns:1fr}
  .hero-stats .stat .cap{letter-spacing:.14em}
  .scroll-hint{display:none}
}
@media(max-width:640px){
  .tech-grid{grid-template-columns:1fr}
  .tech-cell{min-height:0}
  .principles{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr 1fr}
  .hero-stats{grid-template-columns:1fr;gap:14px}
  .hero-stats .stat+.stat{border-left:none;padding-left:0;border-top:1px solid rgba(251,250,247,.28);padding-top:14px}
  .color-chips .chip{flex-basis:50%;border-bottom:1px solid rgba(251,250,247,.3)}
  .step{padding-left:40px;grid-template-columns:1fr}
  .export-steps .es{flex:1 1 40%}
  .foot-top{flex-direction:column}
}

/* ---------- reduced motion ---------- */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .rv{opacity:1;transform:none}
  .line-mask>span{transform:none}
  .img-reveal::after{display:none}
  .img-reveal img{transform:none}
}

#guestbook-tip-box {
    font-family: 'Archivo', Helvetica, Arial, sans-serif;
    font-size: 11px;
    letter-spacing: .26em;
    text-transform: uppercase;
    font-weight: 500;
    line-height: 1.6;
    padding: 16px 22px;
    margin-top: 20px;
    border: 1px solid rgba(23,23,23,.16);
    background: var(--soft, #FBFAF7);
    color: var(--gray, #77736D);
    transition: opacity .5s cubic-bezier(.22,1,.36,1),
                border-color .5s,
                color .5s;
}

/* ---------- wechat qr popup ---------- */
.rail-item.wechat-qr {
  position: relative;
  overflow: visible; /* 允许二维码溢出 */
}

.qr-popup {
  position: absolute;
  bottom: calc(100% + 16px);
  left: 50%;
  width: 180px;
  background: var(--soft);
  border: 1px solid var(--line);
  padding: 12px;
  box-shadow: 0 12px 30px rgba(23,23,23,.12);
  
  /* 初始状态：隐藏并下移 */
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(10px) scale(.95);
  transform-origin: bottom center;
  transition: all .4s var(--ease);
  pointer-events: none;
  z-index: 70;
}

/* 小三角箭头 */
.qr-popup::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 50%;
  width: 10px;
  height: 10px;
  background: var(--soft);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transform: translateX(-50%) rotate(45deg);
}

.qr-popup img {
  width: 100%;
  height: auto;
  display: block;
  /* aspect-ratio: 1/1;  ← 删：不再强制正方形 */
  /* object-fit: cover;  ← 删：不再裁剪 */
  background: #fff; /* 确保二维码背景为白 */
}

.qr-popup .qr-text {
  margin-top: 8px;
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray);
  text-align: center;
  line-height: 1.4;
}

/* Hover 或 Focus 时显示 */
.rail-item.wechat-qr:hover .qr-popup,
.rail-item.wechat-qr:focus-within .qr-popup {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0) scale(1);
  pointer-events: auto;
}

/* 移动端适配：防止二维码超出屏幕 */
@media(max-width: 640px){
  .qr-popup {
    width: 140px;
    bottom: calc(100% + 12px);
  }
}