/* ============================================================
   S & U HEALTH CARE PRODUCTS — SHARED STYLESHEET
   ============================================================ */
:root{
  --navy:#28427b;
  --navy-deep:#182c54;
  --navy-2:#3a5aa0;
  --red:#c62443;
  --red-deep:#8f1a30;
  --ash:#5c6478;
  --paper:#f2f4f8;
  --white:#ffffff;
  --gold:#b8902e;
  --line: rgba(19,42,94,0.14);
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--paper);
  color:var(--navy-deep);
  font-family:'Inter', sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit; text-decoration:none;}
img{display:block; max-width:100%;}
ul{list-style:none;}
.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.7rem; letter-spacing:0.16em; text-transform:uppercase;
  color:var(--red); font-weight:600;
}
h1,h2,h3{
  font-family:'Oswald', sans-serif;
  text-transform:uppercase;
  letter-spacing:0.01em;
  color:var(--navy-deep);
  font-weight:600;
}

/* ===== TOP UTILITY BAR (enquiry strip) ===== */
.topbar{
  background:var(--navy-deep);
  color:#c7d0e8;
  font-family:'IBM Plex Mono', monospace;
  font-size:0.74rem;
  letter-spacing:0.02em;
}
.topbar-wrap{
  max-width:1200px; margin:0 auto; padding:8px 28px;
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:8px;
}
.topbar-wrap a{ color:#c7d0e8; }
.topbar-wrap a:hover{ color:var(--gold); }
.topbar .divider{ color:#4a5a89; margin:0 10px; }
.topbar-left span{ display:inline-flex; align-items:center; gap:6px; }
.topbar-right{ display:flex; gap:18px; align-items:center; }
.topbar-right .lang{ border-left:1px solid #2a3a6a; padding-left:14px; }

/* ===== HEADER / NAV ===== */
header{
  position:sticky; top:0; z-index:60;
  background:rgba(255,255,255,0.96);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  max-width:1200px; margin:0 auto;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 28px;
}
.brand img{height:44px;}
nav.mainnav ul{display:flex; gap:30px;}
nav.mainnav a{
  font-family:'Oswald', sans-serif; font-size:0.8rem; font-weight:500;
  letter-spacing:0.04em; text-transform:uppercase; color:var(--navy-deep);
  position:relative; padding-bottom:4px;
}
nav.mainnav a::after{
  content:''; position:absolute; left:0; bottom:0; height:2px; width:0;
  background:var(--red); transition:width 0.25s ease;
}
nav.mainnav a:hover::after, nav.mainnav a.active::after{width:100%;}
nav.mainnav a.active{color:var(--red);}
@media (max-width:880px){ nav.mainnav ul{display:none;} }

.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 28px; font-family:'Oswald', sans-serif;
  font-size:0.82rem; font-weight:600; letter-spacing:0.05em; text-transform:uppercase;
  transition:all 0.2s ease; border:1px solid transparent; cursor:pointer;
}
.btn-primary{ background:var(--red); color:var(--white); }
.btn-primary:hover{ background:var(--red-deep); }
.btn-navy{ background:var(--navy); color:var(--white); }
.btn-navy:hover{ background:var(--navy-deep); }
.btn-ghost{ border-color:var(--white); color:var(--white); }
.btn-ghost:hover{ background:var(--white); color:var(--navy-deep); }
.btn-ghost-navy{ border-color:var(--navy-deep); color:var(--navy-deep); }
.btn-ghost-navy:hover{ background:var(--navy-deep); color:var(--white); }
.nav-cta .btn{ padding:10px 20px; font-size:0.78rem; }

/* ===== PAGE HERO (secondary pages) ===== */
.page-hero{
  background:linear-gradient(115deg, var(--navy-deep) 0%, var(--navy) 55%, var(--navy-2) 100%);
  color:var(--white); padding:70px 28px 60px; position:relative; overflow:hidden;
}
.page-hero::before{
  content:''; position:absolute; inset:0;
  background-image:repeating-linear-gradient(115deg, rgba(255,255,255,0.035) 0px, rgba(255,255,255,0.035) 2px, transparent 2px, transparent 60px);
  pointer-events:none;
}
.page-hero-wrap{ max-width:1200px; margin:0 auto; position:relative; z-index:2; }
.page-hero h1{ color:var(--white); font-size:clamp(2rem, 4vw, 2.9rem); margin-top:14px; }
.page-hero .zh{ font-family:'Inter'; text-transform:none; color:#b9c4e0; margin-top:10px; font-size:1rem; }
.crumb{ font-family:'IBM Plex Mono', monospace; font-size:0.72rem; color:#8fa0cf; margin-top:16px; }
.crumb a:hover{ color:var(--gold); }

/* ===== HERO (home) ===== */
.hero{
  position:relative; overflow:hidden;
  background:linear-gradient(115deg, var(--navy-deep) 0%, var(--navy) 55%, var(--navy-2) 100%);
  color:var(--white);
}
.hero::before{
  content:''; position:absolute; inset:0;
  background-image:repeating-linear-gradient(115deg, rgba(255,255,255,0.035) 0px, rgba(255,255,255,0.035) 2px, transparent 2px, transparent 60px);
  pointer-events:none;
}
.hero-wrap{
  max-width:1200px; margin:0 auto; padding:90px 28px 60px;
  display:grid; grid-template-columns:1.05fr 0.95fr; gap:40px; align-items:center;
  position:relative; z-index:2;
}
.hero h1{ font-size:clamp(2.3rem, 4.4vw, 3.6rem); line-height:1.08; color:var(--white); margin:20px 0 20px; }
.hero h1 span{color:var(--gold);}
.hero .zh{ font-family:'Inter'; font-size:1rem; color:#b9c4e0; margin-bottom:22px; text-transform:none;}
.hero p.desc{ font-size:1rem; color:#c7d0e8; max-width:460px; margin-bottom:34px;}
.btn-row{display:flex; gap:14px; flex-wrap:wrap;}

.hero-visual{ position:relative; display:flex; align-items:center; justify-content:center; height:420px; }
.hero-visual img.bottle{ position:absolute; filter:drop-shadow(0 22px 34px rgba(0,0,0,0.45)); }
.b-nmn{ width:150px; left:8%; top:10%; z-index:3; }
.b-fish{ width:170px; left:38%; top:2%; z-index:4; }
.b-squa{ width:150px; left:60%; top:16%; z-index:2; }
.b-bone{ width:130px; left:2%; top:52%; z-index:2; }
.b-kids{ width:135px; left:66%; top:56%; z-index:3; }
@media (max-width:860px){ .hero-wrap{grid-template-columns:1fr;} .hero-visual{height:320px;} }

/* ===== CERT STRIP ===== */
.certstrip{ background:var(--navy-deep); border-top:1px solid rgba(255,255,255,0.08); padding:22px 28px; }
.certstrip-wrap{
  max-width:1200px; margin:0 auto;
  display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:24px;
}
.certstrip-wrap .badges{ display:flex; align-items:center; gap:26px; flex-wrap:wrap; }
.certstrip-wrap img{ height:46px; opacity:0.92; }
.certstrip-wrap .iso{ height:40px; background:#fff; padding:4px 6px; }
.certstrip-wrap .txt{ font-family:'IBM Plex Mono', monospace; font-size:0.72rem; color:#9fadd0; letter-spacing:0.06em; }

/* ===== SECTION SHARED ===== */
.section{ max-width:1200px; margin:0 auto; padding:90px 28px; }
.section-head{
  display:flex; justify-content:space-between; align-items:flex-end; gap:20px; flex-wrap:wrap;
  margin-bottom:44px; padding-bottom:22px; border-bottom:2px solid var(--navy-deep);
}
.section-head h2{ font-size:1.9rem; margin-top:6px; }
.section-head .zh-cap{ font-family:'Inter'; font-size:0.95rem; color:var(--ash); margin-top:4px; text-transform:none; }

/* ===== CATEGORIES ===== */
.cat-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
.cat-card{ background:var(--white); padding:28px 22px; min-height:150px; display:flex; flex-direction:column; justify-content:space-between; transition:background .2s;}
.cat-card:hover{ background:#eef1f8; }
.cat-card .num{ font-family:'IBM Plex Mono', monospace; font-size:0.7rem; color:var(--red); }
.cat-card h3{ font-size:1rem; margin-top:12px; }
.cat-card .zh{ font-family:'Inter'; font-size:0.8rem; color:var(--ash); margin-top:2px; text-transform:none; }
@media (max-width:900px){ .cat-grid{grid-template-columns:repeat(2,1fr);} }
@media (max-width:560px){ .cat-grid{grid-template-columns:1fr;} }

/* ===== PRODUCTS ===== */
.prod-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
@media (max-width:900px){ .prod-grid{grid-template-columns:repeat(2,1fr);} }
@media (max-width:600px){ .prod-grid{grid-template-columns:1fr;} }

.prod-card{
  background:var(--white); border:1px solid var(--line);
  display:flex; flex-direction:column; overflow:hidden;
  transition:transform .25s ease, box-shadow .25s ease;
}
.prod-card:hover{ transform:translateY(-5px); box-shadow:0 18px 34px -18px rgba(19,42,94,0.35); }
.prod-visual{
  background:radial-gradient(circle at 50% 30%, #ffffff 0%, #e7ebf3 100%);
  height:230px; display:flex; align-items:center; justify-content:center; position:relative;
}
.prod-visual img{ max-height:190px; width:auto; }
.prod-visual .ribbon{
  position:absolute; top:14px; left:-6px;
  background:var(--red); color:var(--white);
  font-family:'IBM Plex Mono', monospace; font-size:0.65rem; letter-spacing:0.06em;
  padding:4px 12px 4px 16px; text-transform:uppercase;
}
.prod-visual .ribbon::after{
  content:''; position:absolute; right:-8px; top:0; border-style:solid;
  border-width:0 8px 11px 0; border-color:transparent transparent var(--red-deep) transparent;
}
.prod-body{ padding:22px 22px 26px; }
.prod-body .cat-label{ font-family:'IBM Plex Mono', monospace; font-size:0.66rem; color:var(--navy-2); text-transform:uppercase; letter-spacing:0.08em; }
.prod-body h3{ font-size:1.1rem; margin-top:8px; }
.prod-body .zh{ font-family:'Inter'; font-size:0.82rem; color:var(--ash); margin-bottom:12px; text-transform:none; }
.prod-body p{ font-family:'Inter'; font-size:0.85rem; color:#3a4258; text-transform:none; }
.prod-body .more{
  display:inline-block; margin-top:14px; font-family:'Oswald'; font-size:0.76rem; font-weight:600;
  letter-spacing:0.04em; text-transform:uppercase; color:var(--navy-deep); border-bottom:2px solid var(--red);
}

/* ===== MANUFACTURING GRID ===== */
.manuf{ background:var(--white); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.manuf-wrap{ max-width:1200px; margin:0 auto; padding:90px 28px; }
.manuf-grid{ display:grid; grid-template-columns:1.1fr 0.9fr 0.9fr; grid-template-rows:auto auto; gap:14px; margin-top:40px;}
.manuf-grid figure{ position:relative; overflow:hidden; margin:0; background:var(--navy-deep); }
.manuf-grid img{ width:100%; height:100%; object-fit:cover; display:block; transition:transform .4s ease;}
.manuf-grid figure:hover img{ transform:scale(1.05); }
.manuf-grid figcaption{
  position:absolute; bottom:0; left:0; right:0;
  background:linear-gradient(to top, rgba(10,25,56,0.88), transparent);
  color:#fff; padding:16px 16px 12px; font-family:'IBM Plex Mono', monospace; font-size:0.7rem; letter-spacing:0.06em; text-transform:uppercase;
}
.m1{ grid-column:1; grid-row:1 / 3; min-height:420px; }
.m2{ grid-column:2; grid-row:1; min-height:200px; }
.m3{ grid-column:3; grid-row:1; min-height:200px; }
.m4{ grid-column:2 / 4; grid-row:2; min-height:200px; }
@media (max-width:860px){
  .manuf-grid{ grid-template-columns:1fr 1fr; }
  .m1{ grid-column:1/3; grid-row:1; min-height:280px;}
  .m2{ grid-column:1; grid-row:2;}
  .m3{ grid-column:2; grid-row:2;}
  .m4{ grid-column:1/3; grid-row:3;}
}

/* ===== STORY ===== */
.story{ background:var(--navy-deep); color:var(--white); }
.story-wrap{
  max-width:1200px; margin:0 auto; padding:90px 28px;
  display:grid; grid-template-columns:0.85fr 1.15fr; gap:60px; align-items:center;
}
.story-photo img{ width:100%; border:6px solid var(--navy-2); }
.story-copy .eyebrow{ color:var(--gold); }
.story-copy h2{ color:var(--white); font-size:2rem; margin:14px 0 20px; }
.story-copy p{ font-family:'Inter'; color:#c7d0e8; font-size:0.98rem; margin-bottom:16px; max-width:520px; text-transform:none;}
.story-stats{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:rgba(255,255,255,0.15); margin-top:30px;}
.stat{ background:var(--navy-deep); padding:18px 14px; text-align:left;}
.stat .n{ font-family:'Oswald'; font-size:1.7rem; color:var(--gold); }
.stat .l{ font-family:'IBM Plex Mono', monospace; font-size:0.62rem; letter-spacing:0.06em; text-transform:uppercase; color:#a9b7de; margin-top:4px;}
@media (max-width:860px){ .story-wrap{grid-template-columns:1fr;} .story-stats{grid-template-columns:repeat(2,1fr);} }

/* ===== CONTACT PAGE ===== */
.contact-wrap{
  max-width:1200px; margin:0 auto; padding:90px 28px;
  display:grid; grid-template-columns:0.9fr 1.1fr; gap:60px;
}
.contact-info h2{ font-size:1.7rem; margin:14px 0 24px; }
.contact-card{
  background:var(--white); border:1px solid var(--line); padding:26px;
  display:flex; gap:18px; margin-bottom:18px;
}
.contact-card .ic{
  width:44px; height:44px; flex-shrink:0; border-radius:50%;
  background:var(--navy-deep); display:flex; align-items:center; justify-content:center;
}
.contact-card .ic svg{ width:20px; height:20px; stroke:var(--white); fill:none; stroke-width:1.8; }
.contact-card h4{
  font-family:'Oswald', sans-serif; font-size:0.95rem; text-transform:uppercase; letter-spacing:0.03em;
  color:var(--navy-deep); margin-bottom:6px;
}
.contact-card p, .contact-card a{ font-family:'Inter'; font-size:0.9rem; color:var(--ash); }
.contact-card a:hover{ color:var(--red); }

.enquiry-form{
  background:var(--white); border:1px solid var(--line); padding:36px;
}
.enquiry-form h3{ font-size:1.3rem; margin-bottom:6px; }
.enquiry-form .zh-cap{ font-family:'Inter'; text-transform:none; color:var(--ash); font-size:0.9rem; margin-bottom:26px; }
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:16px; }
.form-group{ display:flex; flex-direction:column; gap:6px; }
.form-group.full{ grid-column:1 / -1; }
.form-group label{
  font-family:'IBM Plex Mono', monospace; font-size:0.68rem; letter-spacing:0.06em; text-transform:uppercase; color:var(--ash);
}
.form-group input, .form-group textarea, .form-group select{
  font-family:'Inter'; font-size:0.92rem; padding:12px 14px; border:1px solid var(--line);
  background:var(--paper); color:var(--navy-deep); outline:none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus{ border-color:var(--navy); background:var(--white); }
.form-group textarea{ resize:vertical; min-height:110px; }
@media (max-width:860px){ .contact-wrap{grid-template-columns:1fr;} .form-row{grid-template-columns:1fr;} }

.map-embed{ margin-top:26px; border:1px solid var(--line); height:280px; }
.map-embed iframe{ width:100%; height:100%; border:0; display:block; }

/* ===== FOOTER ===== */
footer{ background:var(--white); border-top:1px solid var(--line); padding:60px 28px 30px; }
.foot-wrap{ max-width:1200px; margin:0 auto; display:grid; grid-template-columns:1.3fr 1fr 1fr 1fr; gap:40px; }
.foot-wrap img.footlogo{ height:34px; margin-bottom:14px; opacity:0.85; }
.foot-wrap h4{
  font-family:'IBM Plex Mono', monospace; font-size:0.7rem; text-transform:uppercase; letter-spacing:0.1em;
  color:var(--ash); margin-bottom:16px;
}
.foot-wrap li{ margin-bottom:10px; font-size:0.86rem; }
.foot-wrap li a:hover{ color:var(--red); }
.foot-bottom{
  max-width:1200px; margin:50px auto 0; padding-top:20px; border-top:1px solid var(--line);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  font-family:'IBM Plex Mono', monospace; font-size:0.72rem; color:var(--ash);
}
@media (max-width:860px){ .foot-wrap{grid-template-columns:1fr 1fr;} }

/* ===== PRODUCT DETAIL PAGE ===== */
.product-hero{ background:var(--white); border-bottom:1px solid var(--line); }
.product-hero-wrap{
  max-width:1200px; margin:0 auto; padding:60px 28px;
  display:grid; grid-template-columns:0.85fr 1.15fr; gap:60px; align-items:center;
}
.product-hero-visual{
  background:radial-gradient(circle at 50% 30%, #ffffff 0%, #e7ebf3 100%);
  border:1px solid var(--line); min-height:420px;
  display:flex; align-items:center; justify-content:center; padding:30px;
}
.product-hero-visual img{ max-height:380px; width:auto; }
.product-hero-info .cat-label{
  font-family:'IBM Plex Mono', monospace; font-size:0.7rem; color:var(--navy-2);
  text-transform:uppercase; letter-spacing:0.08em;
}
.product-hero-info h1{ font-size:clamp(1.7rem, 3vw, 2.4rem); margin:10px 0 4px; }
.product-hero-info .zh-title{ font-family:'Inter'; text-transform:none; color:var(--ash); font-size:1.05rem; margin-bottom:20px; }
.product-hero-info .highlight{
  font-family:'Inter'; font-size:0.95rem; color:#3a4258; margin-bottom:8px; text-transform:none;
}
.product-hero-info .highlight.zh{ color:var(--ash); font-size:0.9rem; }
.product-hero-info .divider-line{ border:none; border-top:1px solid var(--line); margin:18px 0; }
.product-hero-info .btn-row{ margin-top:26px; }

.info-tabs{ max-width:1200px; margin:0 auto; padding:0 28px 90px; }
.info-block{
  background:var(--white); border:1px solid var(--line); margin-bottom:1px;
}
.info-block-head{
  padding:20px 28px; background:var(--navy-deep); color:var(--white);
  font-family:'Oswald', sans-serif; font-size:0.95rem; text-transform:uppercase; letter-spacing:0.04em;
  display:flex; justify-content:space-between; align-items:center;
}
.info-block-head .zh{ font-family:'Inter'; text-transform:none; font-size:0.82rem; color:#a9b7de; }
.info-block-body{ padding:28px; display:grid; grid-template-columns:1fr 1fr; gap:40px; }
.info-block-body .col h4{
  font-family:'IBM Plex Mono', monospace; font-size:0.68rem; letter-spacing:0.08em; text-transform:uppercase;
  color:var(--red); margin-bottom:10px;
}
.info-block-body .col p, .info-block-body .col ul{
  font-family:'Inter'; font-size:0.9rem; color:#3a4258; margin-bottom:16px; text-transform:none;
}
.info-block-body .col ul{ padding-left:18px; }
.info-block-body .col.zh p, .info-block-body .col.zh ul{ color:var(--ash); }
@media (max-width:860px){
  .product-hero-wrap{ grid-template-columns:1fr; }
  .info-block-body{ grid-template-columns:1fr; }
}

.related-wrap{ max-width:1200px; margin:0 auto; padding:0 28px 90px; }
.related-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-top:30px; }
@media (max-width:860px){ .related-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .related-grid{ grid-template-columns:1fr; } }
.related-card{
  background:var(--white); border:1px solid var(--line); padding:20px; text-align:center;
  transition:transform .2s ease, box-shadow .2s ease;
}
.related-card:hover{ transform:translateY(-4px); box-shadow:0 14px 26px -14px rgba(19,42,94,0.3); }
.related-card img{ max-height:120px; margin:0 auto 14px; }
.related-card h5{ font-family:'Oswald'; font-size:0.85rem; text-transform:uppercase; letter-spacing:0.02em; color:var(--navy-deep); }
.related-card .zh{ font-family:'Inter'; font-size:0.78rem; color:var(--ash); margin-top:2px; }

.caution-note{
  background:#fdf3ea; border:1px solid #e9cfa8; padding:16px 20px; font-family:'Inter';
  font-size:0.85rem; color:#7a4a12; text-transform:none;
}

/* ============================================================
   MOBILE NAVIGATION + INTERACTIVE ENHANCEMENTS (2026 update)
   ============================================================ */

/* Hamburger toggle button */
.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:40px; height:36px; background:none; border:none; cursor:pointer; padding:0;
}
.nav-toggle span{
  display:block; width:100%; height:2px; background:var(--navy-deep); transition:all 0.25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

@media (max-width:880px){
  .nav-toggle{ display:flex; }
  .nav-cta{ display:none; }
}

/* Mobile nav panel */
.mobile-nav{
  display:none; flex-direction:column;
  background:var(--white); border-top:1px solid var(--line);
  max-height:0; overflow:hidden; transition:max-height 0.3s ease;
}
.mobile-nav.open{ max-height:520px; }
@media (max-width:880px){ .mobile-nav{ display:flex; } }
.mobile-nav a{
  padding:16px 28px; font-family:'Oswald', sans-serif; font-size:0.9rem; letter-spacing:0.03em;
  text-transform:uppercase; color:var(--navy-deep); border-bottom:1px solid var(--line);
}
.mobile-nav a.active{ color:var(--red); }
.mobile-nav .mobile-cta{ padding:16px 28px; }
.mobile-nav .mobile-cta .btn{ width:100%; justify-content:center; }

/* Header scroll state */
header.scrolled{ box-shadow:0 6px 20px -12px rgba(19,42,94,0.25); }

/* Focus visibility (accessibility) */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--red); outline-offset:2px;
}

/* Floating enquiry CTA */
.float-cta{
  position:fixed; right:22px; bottom:22px; z-index:80;
  display:flex; align-items:center; gap:10px;
  background:var(--red); color:var(--white);
  padding:14px 20px; border-radius:40px;
  font-family:'Oswald', sans-serif; font-size:0.8rem; font-weight:600; letter-spacing:0.04em; text-transform:uppercase;
  box-shadow:0 12px 28px -10px rgba(196,32,43,0.55);
  transition:transform 0.2s ease, background 0.2s ease, opacity 0.3s ease;
  opacity:0; transform:translateY(12px); pointer-events:none;
}
.float-cta.visible{ opacity:1; transform:translateY(0); pointer-events:auto; }
.float-cta:hover{ background:var(--red-deep); transform:translateY(-2px); }
.float-cta svg{ width:16px; height:16px; stroke:#fff; fill:none; stroke-width:2; }
@media (max-width:600px){ .float-cta span.full-label{ display:none; } .float-cta{ padding:14px; border-radius:50%; } }

/* Back to top */
.back-to-top{
  position:fixed; left:22px; bottom:22px; z-index:80;
  width:44px; height:44px; border-radius:50%;
  background:var(--navy-deep); color:var(--white);
  display:flex; align-items:center; justify-content:center;
  opacity:0; transform:translateY(12px); pointer-events:none;
  transition:opacity 0.3s ease, transform 0.2s ease, background 0.2s ease;
}
.back-to-top.visible{ opacity:1; transform:translateY(0); pointer-events:auto; }
.back-to-top:hover{ background:var(--navy); }
.back-to-top svg{ width:18px; height:18px; stroke:#fff; fill:none; stroke-width:2; }

/* Form field validation state */
.form-group input.invalid, .form-group textarea.invalid{ border-color:var(--red); background:#fdf1f1; }
.form-group .field-error{
  font-family:'IBM Plex Mono', monospace; font-size:0.68rem; color:var(--red); display:none;
}
.form-group .field-error.show{ display:block; }
.form-status{
  margin-top:16px; padding:12px 16px; font-family:'Inter'; font-size:0.85rem; display:none;
}
.form-status.success{ display:block; background:#eaf5ec; color:#1f6b32; border:1px solid #bfe3c6; }
.form-status.error{ display:block; background:#fdecec; color:#a3222a; border:1px solid #f3c6c8; }

/* Image loading polish */
img{ background:#eef1f6; }

/* Skip-to-content link */
.skip-link{
  position:absolute; left:-999px; top:0; background:var(--navy-deep); color:#fff;
  padding:10px 18px; z-index:100; font-family:'IBM Plex Mono', monospace; font-size:0.8rem;
}
.skip-link:focus{ left:10px; top:10px; }

@media (prefers-reduced-motion: reduce){
  *{ transition-duration:0.01ms !important; animation-duration:0.01ms !important; }
}

/* ===== SIMPLIFIED HOME HERO (no product photo) ===== */
.hero-wrap-simple{
  grid-template-columns:1fr;
  max-width:760px; text-align:center; padding:110px 28px 90px;
}
.hero-wrap-simple .zh{ max-width:100%; }
.hero-wrap-simple .desc{ max-width:100%; margin-left:auto; margin-right:auto; }
.hero-wrap-simple .btn-row{ justify-content:center; }

/* ===== CATEGORIES DROPDOWN (nav) ===== */
nav.mainnav ul{ align-items:center; }
.has-dropdown{ position:relative; display:flex; align-items:center; }
.has-dropdown > a{
  display:inline-flex; align-items:center; gap:6px; line-height:1;
}
.dropdown-caret{ width:9px; height:9px; display:inline-block; flex-shrink:0; position:relative; top:1px; }
.dropdown-caret path{ stroke:var(--navy-deep); stroke-width:2; fill:none; }

.dropdown-menu{
  position:absolute; top:100%; left:0; min-width:250px;
  background:var(--white); border:1px solid var(--line); box-shadow:0 18px 34px -14px rgba(19,42,94,0.25);
  padding:0 0 8px; margin-top:14px; opacity:0; visibility:hidden; transform:translateY(6px);
  transition:opacity .18s ease, transform .18s ease, visibility .18s ease;
  z-index:70; overflow:hidden;
}
.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu{
  opacity:1; visibility:visible; transform:translateY(0);
}
.dropdown-menu-header{
  background:var(--navy); color:var(--white); padding:12px 20px; margin-bottom:6px;
  font-family:'IBM Plex Mono', monospace; font-size:0.68rem; letter-spacing:0.08em; text-transform:uppercase;
  display:flex; justify-content:space-between; align-items:center;
}
.dropdown-menu-header .zh{ color:#a9bfe0; font-family:'Inter'; text-transform:none; font-size:0.72rem; }
.dropdown-menu a{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:10px 20px; font-family:'Inter'; font-size:0.85rem; font-weight:500;
  text-transform:none; letter-spacing:normal; color:var(--navy-deep); border-bottom:none; line-height:1.3;
}
.dropdown-menu a:hover{ background:var(--paper); color:var(--red); }
.dropdown-menu a .zh{ font-size:0.75rem; color:var(--ash); flex-shrink:0; }
.dropdown-menu a::after{ display:none; }

/* Mobile categories accordion */
.mobile-cats-toggle{
  width:100%; text-align:left; background:var(--navy); border:none; cursor:pointer;
  padding:16px 28px; font-family:'Oswald', sans-serif; font-size:0.9rem; letter-spacing:0.03em;
  text-transform:uppercase; color:var(--white); border-bottom:1px solid var(--line);
  display:flex; justify-content:space-between; align-items:center;
}
.mobile-cats-toggle svg{ width:12px; height:12px; transition:transform .2s ease; flex-shrink:0; }
.mobile-cats-toggle svg path{ stroke:var(--white); }
.mobile-cats-toggle[aria-expanded="true"] svg{ transform:rotate(180deg); }
.mobile-cats-panel{
  max-height:0; overflow:hidden; transition:max-height .25s ease; background:var(--paper);
}
.mobile-cats-panel.open{ max-height:420px; overflow-y:auto; }
.mobile-cats-panel a{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:12px 40px; font-family:'Inter'; font-size:0.85rem; text-transform:none;
  color:var(--navy-deep); border-bottom:1px solid var(--line); line-height:1.3;
}
.mobile-cats-panel a .zh{ font-size:0.72rem; color:var(--ash); flex-shrink:0; }

/* Offset anchor scroll targets so sticky header doesn't overlap */
.prod-card{ scroll-margin-top:90px; }
.cat-card{ cursor:pointer; }