/* shanghaiexcavator.com — graphite + safety-orange industrial theme */
:root{--g0:#0f1114;--g1:#16191e;--g2:#1f2329;--g3:#2b3038;--or:#f26b1d;--or2:#ff8a3d;--ink:#15181c;--muted:#68707c;--bg:#f3f4f6;--line:#e2e4e8;--r:4px;--max:1240px;--shadow:0 18px 40px rgba(15,17,20,.16);
--font:"Inter","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Noto Sans CJK SC","Noto Sans Arabic",Tahoma,Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:16px/1.65 var(--font);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}a{color:inherit;text-decoration:none}
.wrap{width:min(100% - 2.5rem,var(--max));margin-inline:auto}
/* utility bar */
.utility{background:var(--or);color:#fff;font-size:13px;font-weight:600}
.utility .wrap{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;padding:6px 0}
.u-l{display:flex;gap:18px;align-items:center;flex-wrap:wrap}.u-l a{color:#fff;font-weight:800}.u-tag{opacity:.85;font-weight:500}
.langbar{display:flex;gap:2px;flex-wrap:wrap}.langbar a{color:#fff;font-size:12px;font-weight:700;padding:2px 8px;border-radius:2px;opacity:.85}
.langbar a:hover,.langbar a.on{background:var(--g0);opacity:1}
/* header: white, bold */
header.site{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 2px 0 var(--g0),0 6px 20px rgba(0,0,0,.06)}
.hd{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:12px 0}
.logo{display:flex;align-items:center;gap:12px;color:var(--g0)}
.logo .mark{width:46px;height:46px;object-fit:contain}
.logo b{display:block;font-size:1.25rem;font-weight:900;letter-spacing:.02em;text-transform:uppercase;line-height:1.15}
.logo small{display:block;color:var(--or);font-size:10.5px;letter-spacing:.18em;font-weight:800}
nav.main{display:flex;gap:1.3rem;align-items:center}
nav.main a{color:var(--g2);font-weight:700;font-size:14.5px;text-transform:uppercase;letter-spacing:.04em;padding:6px 0;border-bottom:3px solid transparent}
nav.main a:hover,nav.main a.on{border-color:var(--or);color:var(--g0)}
nav.main a.ext{color:var(--or)}
nav.main a.btn{border:0;color:#fff;padding:10px 16px}
.burger{display:none;background:var(--g0);border:0;color:#fff;font-size:20px;padding:6px 12px;border-radius:var(--r)}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;border-radius:var(--r);font-weight:800;border:2px solid transparent;transition:.18s;cursor:pointer;font-size:15px;text-transform:uppercase;letter-spacing:.03em}
.btn.sm{padding:9px 14px;font-size:12.5px}
.btn-or{background:var(--or);color:#fff!important}.btn-or:hover{background:var(--or2);transform:translateY(-1px)}
.btn-line{border-color:rgba(255,255,255,.55);color:#fff}.btn-line:hover{border-color:var(--or);color:var(--or2)}
.btn-dark{background:var(--g0);color:#fff}.btn-dark:hover{background:var(--or)}
.btn-ghost-d{border-color:var(--g0);color:var(--g0)}.btn-ghost-d:hover{background:var(--g0);color:#fff}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin:1rem 0}
/* hero: split text + photo mosaic */
.hero{background:linear-gradient(115deg,var(--g0) 0%,var(--g1) 55%,#24201c 100%);color:#fff;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;inset-inline-end:-8%;top:-30%;width:55%;height:160%;background:repeating-linear-gradient(135deg,rgba(242,107,29,.07) 0 14px,transparent 14px 28px);transform:skewX(-12deg);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:3rem;align-items:center;padding:4.5rem 0 4rem;position:relative;z-index:1}
.kick{display:inline-flex;align-items:center;gap:10px;color:var(--or);font-weight:800;letter-spacing:.16em;text-transform:uppercase;font-size:12.5px;margin:0 0 .9rem}
.kick::before{content:"";width:28px;height:3px;background:var(--or)}
.hero h1{font-size:clamp(2.2rem,4.6vw,3.9rem);line-height:1.08;margin:0 0 1.1rem;font-weight:900;text-transform:uppercase;letter-spacing:-.01em}
.hero .lead{font-size:1.1rem;color:#c3c8cf;max-width:38rem;margin:0 0 1.2rem}
.quick{margin-top:1.6rem;border-top:1px solid rgba(255,255,255,.12);padding-top:1.1rem}
.quick p{margin:0 0 .7rem;color:#9aa2ad;font-size:13px;text-transform:uppercase;letter-spacing:.1em}.quick p b{color:var(--or2);font-size:1.1rem}
.quick div{display:flex;flex-wrap:wrap;gap:8px}
.quick a{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);padding:7px 12px;border-radius:var(--r);font-size:13.5px;font-weight:700}
.quick a span{color:var(--or2);margin-inline-start:4px}.quick a:hover{background:var(--or);border-color:var(--or)}.quick a:hover span{color:#fff}
.mosaic{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:10px;aspect-ratio:1/0.82}
.mosaic a{position:relative;overflow:hidden;border-radius:var(--r);background:#000}
.mosaic a:first-child{grid-row:span 2}
.mosaic img{width:100%;height:100%;object-fit:cover;transition:.4s;opacity:.92}.mosaic a:hover img{transform:scale(1.05);opacity:1}
.mosaic span{position:absolute;inset-inline:0;bottom:0;padding:22px 12px 9px;background:linear-gradient(transparent,rgba(0,0,0,.85));font-size:13px;font-weight:800}
.mosaic a:first-child::before{content:"";position:absolute;top:0;inset-inline-start:0;width:5px;height:100%;background:var(--or);z-index:1}
/* stats: orange band */
.stats{background:var(--or);color:#fff}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:1.4rem 1.2rem;border-inline-start:1px solid rgba(255,255,255,.25)}.stat:first-child{border:0}
.stat b{display:block;font-size:1.25rem;font-weight:900;text-transform:uppercase}.stat span{font-size:13.5px;opacity:.9}
/* sections */
.sec{padding:4.5rem 0}.sec.alt{background:#fff}
.sec h2{font-size:clamp(1.6rem,2.6vw,2.4rem);margin:0 0 1.6rem;color:var(--g0);font-weight:900;text-transform:uppercase;letter-spacing:-.005em}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:1rem;flex-wrap:wrap}.sec-head h2{margin-bottom:1.4rem}
.more{color:var(--or);font-weight:800;text-transform:uppercase;font-size:14px;margin-bottom:1.6rem}
.sub{color:var(--muted);max-width:40rem}
/* category tiles */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.cat-card{position:relative;background:var(--g1);color:#fff;padding:1.4rem 1.2rem 1.2rem;border-radius:var(--r);display:flex;flex-direction:column;gap:.2rem;overflow:hidden;transition:.2s;min-height:128px}
.cat-card .n{font-size:2.3rem;font-weight:900;line-height:1;color:var(--or)}
.cat-card b{font-size:1.05rem}.cat-card i{position:absolute;inset-inline-end:16px;bottom:14px;font-style:normal;color:#6c737d;font-size:1.2rem;transition:.2s}
.cat-card:hover{background:var(--or)}.cat-card:hover .n,.cat-card:hover i{color:#fff}
/* product cards */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.grid.g3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:.2s;border-bottom:3px solid var(--g0)}
.card:hover{box-shadow:var(--shadow);border-bottom-color:var(--or);transform:translateY(-3px)}
.ci{position:relative;display:block;aspect-ratio:16/10;background:#111;overflow:hidden}.ci img{width:100%;height:100%;object-fit:cover;transition:.4s}.card:hover .ci img{transform:scale(1.04)}
.kbadge{position:absolute;top:0;inset-inline-start:0;background:var(--or);color:#fff;font-weight:800;font-size:11px;padding:5px 10px;text-transform:uppercase;letter-spacing:.05em}
.cb{padding:.9rem 1rem 1rem;display:flex;flex-direction:column;gap:.45rem;flex:1}
.brandrow{display:flex;justify-content:space-between;align-items:center}
.brandrow small{color:var(--muted);font-weight:800;letter-spacing:.1em;text-transform:uppercase;font-size:11px}
.to-main{font-size:11px;font-weight:800;color:var(--or);border:1px solid #f6c3a4;padding:1px 7px;border-radius:2px}.to-main:hover{background:var(--or);color:#fff}
.cb h3{margin:0;font-size:1.1rem;color:var(--g0);font-weight:900}.cb h3 a:hover{color:var(--or)}
.spec{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:var(--r)}
.spec div{padding:6px 10px}.spec div+div{border-inline-start:1px solid var(--line)}
.spec span{display:block;font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}.spec b{font-size:14px}
.more-link{margin-top:auto;font-weight:800;font-size:13px;text-transform:uppercase;color:var(--g0);display:flex;justify-content:space-between;padding-top:.4rem}
.more-link span{color:var(--or)}.more-link:hover{color:var(--or)}
[dir=rtl] .more-link span,[dir=rtl] .cat-card i{transform:scaleX(-1)}
/* brands */
.brands-sec{background:var(--g0);color:#fff}.brands-sec h2{color:#fff}
.brands{display:grid;grid-template-columns:repeat(6,1fr);gap:1px;background:var(--g3);border:1px solid var(--g3)}
.badge{background:var(--g0);padding:1.2rem 1rem;display:flex;justify-content:space-between;align-items:baseline;transition:.15s}
.badge b{font-size:1.05rem;letter-spacing:.06em;text-transform:uppercase}.badge span{color:var(--or2);font-weight:800;font-size:13px}
.badge:hover{background:var(--or)}.badge:hover span{color:#fff}
/* main-site banner */
.main-banner{background:var(--g2);color:#cfd3d9;border-top:3px solid var(--or)}
.main-banner .wrap{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;padding:1rem 0;font-weight:600}
.main-banner a{color:#fff;font-weight:900;border-bottom:2px solid var(--or)}
/* services */
.services{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.svc{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:1.6rem 1.3rem;border-top:4px solid var(--g0);transition:.2s}
.svc:hover{border-top-color:var(--or)}
.svc .num{font-size:2rem;font-weight:900;color:var(--or);line-height:1}.svc h3{margin:.6rem 0 .4rem;color:var(--g0)}.svc p{margin:0;color:var(--muted);font-size:14.5px}
/* video */
.video-sec{background:var(--g1);color:#fff}.video-sec h2{color:#fff}.video-sec .sub{color:#aab1bb}
.video-wrap{display:grid;grid-template-columns:1fr 1.5fr;gap:2.5rem;align-items:center}
.video-wrap video{width:100%;border-radius:var(--r);border:3px solid var(--or);background:#000}
/* about */
.about-band{display:grid;grid-template-columns:.9fr 1.1fr;gap:3rem;align-items:center}
.about-band img{border-radius:var(--r);aspect-ratio:4/3;object-fit:cover;width:100%;box-shadow:12px 12px 0 var(--or)}
[dir=rtl] .about-band img{box-shadow:-12px 12px 0 var(--or)}
.about-band p,.prose p{color:#3b424c;font-size:1.04rem}
.lnk{color:var(--or);font-weight:800;text-decoration:underline}
/* CTA */
.cta-band{background:var(--g0);color:#fff;padding:3rem 0;border-top:6px solid var(--or)}
.cta-in{display:flex;justify-content:space-between;align-items:center;gap:2rem;flex-wrap:wrap}
.cta-band h2{margin:0 0 .4rem;font-size:clamp(1.5rem,2.4vw,2.1rem);text-transform:uppercase;font-weight:900}.cta-band p{color:#aab1bb;max-width:40rem;margin:0}
/* page hero */
.page-hero{background:var(--g1);color:#fff;padding:2.8rem 0 2.4rem;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;inset-inline-end:0;top:0;width:30%;height:100%;background:repeating-linear-gradient(135deg,rgba(242,107,29,.12) 0 12px,transparent 12px 24px)}
.page-hero .wrap{position:relative;z-index:1}
.page-hero h1{margin:0 0 .4rem;font-size:clamp(1.8rem,3.4vw,2.8rem);text-transform:uppercase;font-weight:900}.page-hero h1 em{font-style:normal;color:var(--or)}
.page-hero p{margin:0;color:#aab1bb;max-width:44rem}.page-hero.slim{padding:2rem 0 1.6rem}
.crumb{font-size:13px;color:#8a929d!important;margin-bottom:.7rem!important}.crumb a{color:#d4d8dd}.crumb a:hover{color:var(--or2)}.crumb span{color:var(--or2)}
/* stock layout with sidebar filters */
.stock-layout{display:grid;grid-template-columns:270px 1fr;gap:1.6rem;align-items:start}
.filters{position:sticky;top:90px;display:flex;flex-direction:column;gap:12px}
.fbox{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:1rem}
.fbox h4{margin:0 0 .6rem;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.fbox ul{list-style:none;margin:0;padding:0}
.fbox li a{display:flex;justify-content:space-between;padding:7px 10px;border-radius:var(--r);font-weight:700;font-size:14px;color:var(--g2);border-inline-start:3px solid transparent}
.fbox li a span{color:var(--muted);font-weight:600;font-size:12.5px}
.fbox li a:hover{background:var(--bg)}.fbox li a.on{background:var(--g0);color:#fff;border-color:var(--or)}.fbox li a.on span{color:var(--or2)}
.bchips{display:flex;flex-wrap:wrap;gap:6px}
.bchip{font-size:12.5px;font-weight:700;padding:4px 9px;border:1px solid var(--line);border-radius:2px}.bchip span{color:var(--muted);font-weight:600}
.bchip:hover,.bchip.on{background:var(--or);border-color:var(--or);color:#fff}.bchip:hover span,.bchip.on span{color:#fff}
.fbox.dark{background:var(--g0);color:#cfd3d9;border:0}.fbox.dark p{margin:0 0 .8rem;font-size:14px}.fbox.dark .tel{display:block;margin-top:.7rem;color:#fff;font-weight:900}
.pager{display:flex;gap:4px;justify-content:center;align-items:center;flex-wrap:wrap;margin:2rem 0 0}
.pager a,.pager span{min-width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--r);border:1px solid var(--line);background:#fff;font-weight:800;color:var(--g0);padding:0 10px}
.pager a:hover{border-color:var(--or);color:var(--or)}.pager span.on{background:var(--or);color:#fff;border-color:var(--or)}
/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:2rem;border-top:4px solid var(--or)}.panel h3{margin:0 0 1rem;color:var(--g0);font-size:1.3rem;text-transform:uppercase}
.panel.dark{background:var(--g0);color:#cfd3d9;border:0;border-top:4px solid var(--or)}.panel.dark h3{color:#fff}
.panel dl{margin:0;display:grid;gap:.3rem}.panel dt{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:.6rem}
.panel dd{margin:0;font-size:1.1rem;font-weight:700;color:var(--g0)}.panel dd a{color:var(--or)}
/* detail */
.detail{display:grid;grid-template-columns:1.35fr .9fr;gap:2rem;align-items:start}
.gallery{border-radius:var(--r);overflow:hidden;background:#111;border-bottom:4px solid var(--or)}.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover}
.thumbs{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin-top:6px}.thumbs img{aspect-ratio:4/3;object-fit:cover;border-radius:2px;cursor:pointer;opacity:.85}.thumbs img:hover{opacity:1;outline:2px solid var(--or)}
.meta{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:1.6rem;position:sticky;top:90px}.meta h2{font-size:1.2rem;margin:0;text-transform:uppercase}
.meta table{width:100%;border-collapse:collapse;margin:1rem 0}.meta th,.meta td{text-align:start;padding:.55rem .6rem;border-bottom:1px solid var(--line)}
.meta tr:nth-child(odd){background:#f8f9fa}.meta th{color:var(--muted);font-weight:600;width:42%}.meta td{font-weight:800;color:var(--g0)}
.main-cta{display:flex;justify-content:space-between;align-items:center;gap:1rem;background:var(--g0);color:#fff;padding:14px 16px;border-radius:var(--r);border-inline-start:5px solid var(--or);margin:1rem 0}
.main-cta small{display:block;color:#9aa2ad;font-size:11.5px;letter-spacing:.06em}.main-cta b{font-size:1.02rem}.main-cta i{font-style:normal;font-size:1.4rem;color:var(--or)}
.main-cta:hover{background:var(--or)}.main-cta:hover i,.main-cta:hover small{color:#fff}
.muted{color:var(--muted);font-size:14px}
/* footer */
footer.site{background:var(--g0);color:#9aa2ad;padding:3.2rem 0 1.4rem;font-size:14.5px;border-top:6px solid var(--or)}
.fgrid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:2.2rem;margin-bottom:2rem}
.flogo{color:#fff;margin-bottom:.8rem}
footer.site h4{color:#fff;margin:0 0 1rem;letter-spacing:.12em;text-transform:uppercase;font-size:13px}
footer.site a{color:#d4d8dd}footer.site a:hover{color:var(--or2)}footer.site p{margin:.35rem 0}.cnt{color:var(--or);font-size:12px;font-weight:800}
.grp a b{color:var(--or2)}
.copy{border-top:1px solid #23272d;padding-top:1rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;font-size:13px}
.wa-float{position:fixed;inset-inline-end:18px;bottom:18px;z-index:60;display:flex;align-items:center;gap:8px;background:#25D366;color:#fff;padding:12px 18px 12px 14px;border-radius:var(--r);font-weight:800;box-shadow:0 10px 26px rgba(37,211,102,.45)}
@media(max-width:1100px){.grid{grid-template-columns:repeat(3,1fr)}.grid.g3{grid-template-columns:repeat(2,1fr)}.brands{grid-template-columns:repeat(4,1fr)}.fgrid{grid-template-columns:1fr 1fr}}
@media(max-width:900px){.hero-grid,.about-band,.video-wrap,.contact-grid,.detail,.stock-layout{grid-template-columns:1fr}.filters,.meta{position:static}
.grid,.services,.cat-grid{grid-template-columns:repeat(2,1fr)}.stats .wrap{grid-template-columns:repeat(2,1fr)}.brands{grid-template-columns:repeat(3,1fr)}
.burger{display:block}.hd{flex-wrap:wrap}nav.main{display:none;width:100%;flex-direction:column;align-items:flex-start;gap:.4rem;padding-bottom:1rem}header.site.open nav.main{display:flex}.u-tag{display:none}}
@media(max-width:560px){.grid,.grid.g3,.services,.fgrid{grid-template-columns:1fr}.cat-grid{grid-template-columns:1fr 1fr}.hero-grid{padding:3rem 0}.wa-float span{display:none}.wa-float{padding:14px;border-radius:50%}.logo b{font-size:1.05rem}}