/* ============================================================
   SWITH INDUSTRY DEVELOPMENT (HK) LIMITED — swith.hk
   Bronze / Charcoal / Cream — industrial trading co.
   ============================================================ */
:root{
  --bronze:#b38d54;
  --bronze-dark:#8a6b3e;
  --bronze-light:#d4b380;
  --charcoal:#1c1c1e;
  --charcoal-2:#26262a;
  --cream:#faf8f5;
  --cream-dark:#f0ebe3;
  --line:#e5e0d8;
  --text:#1c1c1e;
  --mute:#6e6e73;
  --serif:"Georgia","Times New Roman","Songti SC","STSong",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--text);line-height:1.6;background:var(--cream);-webkit-font-smoothing:antialiased;font-size:16px}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- top bar ---------- */
.topbar{background:var(--charcoal);color:#9a9a9f;font-size:12.5px;padding:8px 0}
.topbar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px}
.topbar a{color:#9a9a9f;margin-left:18px;transition:color .2s}
.topbar a:hover{color:var(--bronze-light)}
.topbar a.lang{color:var(--bronze-light);font-weight:600;letter-spacing:.02em}
.topbar .tb-left span{margin-right:18px}

/* ---------- header ---------- */
.header{background:var(--cream);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100}
.nav{display:flex;justify-content:space-between;align-items:center;padding:16px 0}
.logo{display:flex;align-items:center;gap:13px}
.logo-mark{width:44px;height:44px;border-radius:50%;border:2px solid var(--bronze);display:flex;align-items:center;justify-content:center;color:var(--bronze);font-size:19px;font-weight:700;font-family:var(--serif);flex-shrink:0}
.logo-text .cn{font-size:15px;font-weight:700;line-height:1.25;letter-spacing:.02em}
.logo-text .en{font-size:10px;color:var(--mute);letter-spacing:.6px;text-transform:uppercase}
.nav-menu{display:flex;list-style:none;align-items:center}
.nav-menu a{display:block;padding:9px 18px;font-size:14px;font-weight:500;color:var(--mute);transition:color .2s}
.nav-menu a:hover,.nav-menu a.active{color:var(--bronze-dark)}
.nav-cta{margin-left:14px;display:inline-block;padding:10px 22px;background:var(--bronze);color:#fff;font-size:13px;font-weight:600;letter-spacing:.04em;transition:transform .2s,box-shadow .2s,background .2s}
.nav-cta:hover{background:var(--bronze-dark);transform:translateY(-1px);box-shadow:0 6px 14px rgba(138,107,62,.35)}
.mobile-toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--text);line-height:1}

/* ---------- hero ---------- */
.hero{position:relative;min-height:560px;display:flex;align-items:flex-end;overflow:hidden;background:var(--charcoal)}
.hero-bg{position:absolute;inset:0;background:url('../images/machinery_export.jpg') center/cover no-repeat}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(28,28,30,.86) 0%,rgba(28,28,30,.55) 46%,rgba(28,28,30,.12) 78%),linear-gradient(0deg,rgba(28,28,30,.55) 0%,transparent 40%)}
.hero-content{position:relative;z-index:2;padding:96px 24px 84px;max-width:760px}
.hero .eyebrow{font-size:12px;letter-spacing:3.5px;text-transform:uppercase;color:var(--bronze-light);margin-bottom:18px;font-weight:600}
.hero h1{font-family:var(--serif);font-size:clamp(34px,5vw,54px);line-height:1.15;color:#fff;font-weight:400;margin-bottom:16px}
.hero p{font-size:17px;color:rgba(255,255,255,.82);margin-bottom:34px;max-width:600px;line-height:1.65}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 34px;font-weight:600;font-size:14px;transition:transform .22s,box-shadow .22s,background .22s,border-color .22s;cursor:pointer;border:none;font-family:var(--sans)}
.btn-bronze{background:var(--bronze);color:#fff}
.btn-bronze:hover{background:var(--bronze-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(138,107,62,.4)}
.btn-line{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45)}
.btn-line:hover{border-color:var(--bronze-light);color:var(--bronze-light);transform:translateY(-2px)}

/* ---------- section ---------- */
.section{padding:88px 0}
.section.tight{padding:72px 0}
.section.loose{padding:104px 0}
.section.alt{background:var(--cream-dark)}
.section.dark{background:var(--charcoal);color:rgba(255,255,255,.72)}
.section-head{margin-bottom:46px;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.section-head .label{font-size:12px;color:var(--bronze-dark);font-weight:700;letter-spacing:2.5px;text-transform:uppercase;margin-bottom:10px}
.section.dark .section-head .label{color:var(--bronze-light)}
.section-head h2{font-family:var(--serif);font-size:clamp(28px,3.4vw,38px);line-height:1.2;font-weight:400;color:var(--text)}
.section.dark .section-head h2{color:#fff}
.section-head .more{font-size:13.5px;font-weight:600;color:var(--bronze-dark);border-bottom:1px solid var(--bronze);padding-bottom:3px;transition:color .2s;white-space:nowrap}
.section-head .more:hover{color:var(--bronze)}

/* ---------- service ---------- */
.service-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:56px;align-items:center}
.service-text p{font-size:16px;color:var(--mute);line-height:1.8;margin-bottom:22px}
.service-list{counter-reset:svc;border-top:1px solid var(--line)}
.service-item{counter-increment:svc;display:grid;grid-template-columns:52px 1fr;gap:16px;padding:20px 0;border-bottom:1px solid var(--line);align-items:baseline}
.service-item::before{content:"0" counter(svc);font-family:var(--serif);font-style:italic;font-size:17px;color:var(--bronze)}
.service-item h4{font-size:16.5px;font-weight:600;margin-bottom:3px}
.service-item p{font-size:14px;color:var(--mute);line-height:1.55}
.service-photo{position:relative}
.service-photo img{width:100%;height:420px;object-fit:cover;filter:saturate(.92)}
.service-photo::after{content:"";position:absolute;inset:14px;border:1px solid rgba(255,255,255,.35);pointer-events:none}

/* ---------- category grid (home preview) ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat-card{background:#fff;border:1px solid var(--line);transition:transform .25s,box-shadow .25s;display:block}
.cat-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(28,28,30,.10)}
.cat-card .ph{height:170px;overflow:hidden}
.cat-card .ph img{width:100%;height:100%;object-fit:cover;filter:saturate(.9);transition:transform .5s}
.cat-card:hover .ph img{transform:scale(1.05)}
.cat-card .body{padding:18px 20px 20px}
.cat-card .k{font-size:10.5px;letter-spacing:1.6px;text-transform:uppercase;color:var(--bronze-dark);font-weight:700;margin-bottom:6px}
.cat-card h3{font-size:17px;font-weight:600;margin-bottom:5px}
.cat-card p{font-size:13px;color:var(--mute);line-height:1.55}

/* ---------- gallery ---------- */
.gal{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.gal figure{position:relative;overflow:hidden;background:var(--charcoal-2)}
.gal img{width:100%;height:250px;object-fit:cover;filter:saturate(.9);transition:transform .55s,opacity .3s}
.gal figure:hover img{transform:scale(1.04);opacity:.9}
.gal figcaption{position:absolute;left:0;bottom:0;right:0;padding:12px 16px;background:linear-gradient(0deg,rgba(28,28,30,.82),transparent);color:#fff;font-size:13px;font-weight:500;letter-spacing:.03em}

/* ---------- about / stats ---------- */
.about-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:64px;align-items:center}
.about-text h3{font-family:var(--serif);font-size:26px;color:#fff;margin-bottom:18px;font-weight:400;line-height:1.35}
.about-text p{font-size:15px;color:rgba(255,255,255,.72);margin-bottom:14px;line-height:1.8}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:0 28px}
.stat{padding:26px 0 22px;border-top:1px solid rgba(255,255,255,.14)}
.stat .num{font-family:var(--serif);font-size:38px;color:var(--bronze-light);line-height:1}
.stat .desc{font-size:12.5px;color:rgba(255,255,255,.48);margin-top:8px;letter-spacing:.04em;text-transform:uppercase}

/* ---------- CTA band ---------- */
.cta{background:var(--bronze);color:#fff;padding:72px 0}
.cta .wrap{display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.cta h2{font-family:var(--serif);font-size:30px;margin-bottom:8px;font-weight:400}
.cta p{font-size:15px;color:rgba(255,255,255,.85)}
.cta .btn{background:#fff;color:var(--bronze-dark)}
.cta .btn:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(0,0,0,.22)}

/* ---------- page hero (sub pages) ---------- */
.page-hero{background:var(--charcoal);padding:64px 0;position:relative;overflow:hidden}
.page-hero .bg{position:absolute;inset:0;background:url('../images/machinery_export.jpg') center/cover no-repeat;opacity:.18;filter:saturate(.6)}
.page-hero .inner{position:relative;z-index:1}
.page-hero .label{font-size:11.5px;letter-spacing:3px;text-transform:uppercase;color:var(--bronze-light);font-weight:700;margin-bottom:10px}
.page-hero h1{font-family:var(--serif);font-size:clamp(30px,4vw,44px);color:#fff;font-weight:400}
.page-hero p{color:rgba(255,255,255,.72);max-width:720px;margin-top:12px;font-size:15.5px;line-height:1.7}

/* ---------- product rows (industrial group) ---------- */
.prod-row{display:grid;grid-template-columns:1fr 1fr;gap:0;border-bottom:1px solid var(--line);background:var(--cream)}
.prod-row.alt-bg{background:var(--cream-dark)}
.prod-row .p-img{min-height:320px;overflow:hidden}
.prod-row .p-img img{width:100%;height:100%;object-fit:cover;filter:saturate(.9);transition:transform .5s}
.prod-row:hover .p-img img{transform:scale(1.03)}
.prod-row .p-body{padding:52px;display:flex;flex-direction:column;justify-content:center}
.prod-row .p-num{font-family:var(--serif);font-style:italic;font-size:14px;color:var(--bronze);margin-bottom:8px}
.prod-row h3{font-family:var(--serif);font-size:27px;font-weight:400;margin-bottom:5px}
.prod-row .p-en{font-size:12.5px;color:var(--bronze-dark);text-transform:uppercase;letter-spacing:1.2px;font-weight:700;margin-bottom:14px}
.prod-row p{font-size:15px;color:var(--mute);line-height:1.75;margin-bottom:16px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:12px;padding:4px 13px;border:1px solid var(--line);color:var(--mute);background:#fff}

/* ---------- daily bento ---------- */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.bento .b-card{background:#fff;border:1px solid var(--line);overflow:hidden;transition:transform .25s,box-shadow .25s}
.bento .b-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(28,28,30,.10)}
.bento .b-card .ph{height:210px;overflow:hidden}
.bento .b-card .ph img{width:100%;height:100%;object-fit:cover;filter:saturate(.9);transition:transform .5s}
.bento .b-card:hover .ph img{transform:scale(1.05)}
.bento .b-card .body{padding:18px 20px 20px}
.bento .b-card h3{font-size:17.5px;font-weight:600;margin-bottom:5px}
.bento .b-card p{font-size:13px;color:var(--mute);line-height:1.55}
.bento .wide{grid-column:span 2}
.bento .wide .ph{height:260px}
.bento .b-cta{background:var(--charcoal);border:none;color:#fff;display:flex;flex-direction:column;justify-content:center;padding:34px}
.bento .b-cta h3{font-family:var(--serif);font-size:22px;font-weight:400;color:#fff;margin-bottom:10px}
.bento .b-cta p{color:rgba(255,255,255,.65);font-size:13.5px;line-height:1.7;margin-bottom:18px}
.bento .b-cta a{color:var(--bronze-light);font-size:13.5px;font-weight:600;border-bottom:1px solid var(--bronze);padding-bottom:2px;align-self:flex-start}

/* ---------- group divider ---------- */
.group-head{display:flex;align-items:baseline;gap:18px;margin:64px 0 30px}
.group-head:first-child{margin-top:0}
.group-head .g-label{font-family:var(--serif);font-style:italic;font-size:15px;color:var(--bronze)}
.group-head h2{font-family:var(--serif);font-size:30px;font-weight:400}
.group-head .rule{flex:1;height:1px;background:var(--line)}

/* ---------- contact page ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:56px}
.c-info .item{display:grid;grid-template-columns:46px 1fr;gap:16px;padding:22px 0;border-bottom:1px solid var(--line);align-items:start}
.c-info .item:first-child{border-top:1px solid var(--line)}
.c-info .ico{width:44px;height:44px;border:1px solid var(--line);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--bronze-dark)}
.c-info h4{font-size:13px;letter-spacing:1.5px;text-transform:uppercase;color:var(--mute);margin-bottom:5px;font-weight:700}
.c-info p{font-size:15.5px;line-height:1.6}
.c-info a{color:var(--bronze-dark);border-bottom:1px solid var(--bronze-light)}
.c-form{background:#fff;border:1px solid var(--line);padding:38px}
.c-form h3{font-family:var(--serif);font-size:24px;font-weight:400;margin-bottom:6px}
.c-form .sub{font-size:14px;color:var(--mute);margin-bottom:26px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:7px;color:var(--text)}
.field label span{color:#b0413e}
.field input,.field textarea{width:100%;padding:13px 15px;border:1px solid var(--line);background:var(--cream);font-size:14.5px;font-family:var(--sans);transition:border-color .2s,background .2s;color:var(--text)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--bronze);background:#fff}
.field textarea{min-height:130px;resize:vertical}
.form-ok{margin-top:16px;padding:14px 16px;background:#eef5ec;border:1px solid #c9dcc4;color:#2e5b2a;font-size:14px}

/* ---------- about page ---------- */
.two-col{display:grid;grid-template-columns:1.3fr 1fr;gap:60px;align-items:start}
.prose h3{font-family:var(--serif);font-size:23px;font-weight:400;margin:30px 0 14px}
.prose h3:first-child{margin-top:0}
.prose p{font-size:15.5px;color:var(--mute);line-height:1.85;margin-bottom:16px}
.side-photo{border:1px solid var(--line);background:#fff;padding:12px}
.side-photo img{width:100%;height:auto;filter:saturate(.92)}
.side-photo figcaption{font-size:12px;color:var(--mute);padding:10px 4px 2px;letter-spacing:.04em}

/* ---------- footer ---------- */
footer{background:var(--charcoal);color:rgba(255,255,255,.55);padding:56px 0 0}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:44px}
.f-brand .logo-mark{margin-bottom:14px}
.f-brand p{font-size:13.5px;line-height:1.8;max-width:340px}
footer h4{color:#fff;font-size:13px;letter-spacing:1.8px;text-transform:uppercase;margin-bottom:18px;font-weight:600}
.f-links li{list-style:none;margin-bottom:10px}
.f-links a{font-size:14px;transition:color .2s}
.f-links a:hover{color:var(--bronze-light)}
.f-contact li{list-style:none;font-size:14px;margin-bottom:10px;line-height:1.6}
.f-contact a{color:var(--bronze-light)}
.f-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.38)}

/* ---------- responsive ---------- */
@media (max-width: 960px){
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid,.about-grid,.contact-grid,.two-col{grid-template-columns:1fr;gap:36px}
  .service-photo img{height:300px}
  .gal{grid-template-columns:repeat(2,1fr)}
  .bento{grid-template-columns:1fr 1fr}
  .bento .wide{grid-column:span 2}
  .f-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 720px){
  .nav-menu{display:none;position:absolute;top:100%;left:0;right:0;background:var(--cream);border-bottom:1px solid var(--line);flex-direction:column;padding:10px 0;align-items:stretch}
  .nav-menu.open{display:flex}
  .nav-menu a{padding:13px 26px}
  .nav-cta{display:none}
  .mobile-toggle{display:block}
  .prod-row{grid-template-columns:1fr}
  .prod-row .p-body{padding:32px 26px}
  .prod-row .p-img{min-height:240px}
  .gal{grid-template-columns:1fr}
  .bento{grid-template-columns:1fr}
  .bento .wide{grid-column:span 1}
  .cat-grid{grid-template-columns:1fr 1fr}
  .hero{min-height:480px}
  .topbar .tb-left{display:none}
}