:root{--max:1200px;--space:clamp(14px,2vw,22px);--radius:14px;--shadow:0 8px 24px rgba(0,0,0,.08);--brand:#c1121f;--nav-size:20px;--dd-size:18px;--h1-hero:32px;--p-hero:12px;--h1-contact:37.7px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Microsoft YaHei","Microsoft YaHei UI","微软雅黑","Noto Sans SC","PingFang SC","Hiragino Sans GB",Arial,sans-serif;font-size:14px;line-height:1.5;color:#101010;background:#fafafa;letter-spacing:.2px}
a{color:inherit;text-decoration:none}.container{max-width:var(--max);margin:auto;padding:0 var(--space)}
.nav{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.65);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid rgba(0,0,0,.08)}.nav .inner{display:flex;align-items:center;justify-content:space-between;height:104px}
.brand img{height:96px}@media (max-width:640px){.brand img{height:64px}.nav .inner{height:78px}}.nav .menu{display:flex;align-items:center;gap:12px}.nav .menu>.nav-item{position:relative}
.nav .menu>.nav-item>a,.nav .menu>.nav-item>button{padding:8px 10px;border-radius:10px;color:#333;background:none;border:0;cursor:pointer;font:inherit;display:flex;align-items:center;gap:6px;font-family:"Mulish","Microsoft YaHei",sans-serif;font-weight:700;font-size:var(--nav-size);position:relative}
.nav .menu>.nav-item>a::after,.nav .menu>.nav-item>button::after{content:"";position:absolute;left:8px;right:8px;bottom:-14px;height:4px;background:#000;transform:scaleX(0);transform-origin:left;transition:transform .2s ease;border-radius:3px}
.nav .menu>.nav-item>a:hover::after,.nav .menu>.nav-item>button:hover::after{transform:scaleX(1)}
.nav .menu>.nav-item>a.active::after,.nav .menu>.nav-item>button.active::after{transform:scaleX(1)}
.nav .menu>.nav-item>a:hover,.nav .menu>.nav-item>button:hover{text-decoration:none}
.dd{position:absolute;top:100%;left:0;background:#000;border:1px solid #000;border-radius:12px;box-shadow:0 12px 34px rgba(0,0,0,.3);padding:8px;display:none;width:max-content;min-width:auto;white-space:nowrap}
.nav .nav-item:hover>.dd{display:block}.dd a{display:block;padding:10px 12px;border-radius:10px;color:#fff;font-family:"Mulish","Microsoft YaHei",sans-serif;font-weight:400;font-size:var(--dd-size)}.dd a:hover{background:#1c1c1c}
.lang{position:relative;margin-left:6px}.lang .lang-btn{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:12px;border:1px solid #ddd;background:#fff;cursor:pointer;font-family:"Mulish","Microsoft YaHei",sans-serif;font-weight:400;font-size:var(--nav-size);line-height:1}
.lang .globe{width:18px;height:18px;display:inline-block;flex:0 0 18px}.lang .lang-dd{position:absolute;top:calc(100% + 6px);right:0;background:#000;border:1px solid #000;border-radius:12px;box-shadow:0 12px 34px rgba(0,0,0,.3);padding:6px;display:none;z-index:2;width:max-content;white-space:nowrap}
.lang .lang-dd a{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:10px;color:#fff;font-family:"Mulish","Microsoft YaHei",sans-serif;font-weight:400;font-size:var(--dd-size)}.lang .lang-dd a:hover{background:#1c1c1c}.lang.open .lang-dd{display:block}.flag{width:18px;height:12px;display:inline-block}.chev{width:14px;height:14px}
.hero{position:relative;color:#fff;padding:min(20vh,200px) 0;min-height:clamp(480px,68vh,820px);background-image:linear-gradient(to bottom,rgba(0,0,0,.45),rgba(0,0,0,.35),rgba(0,0,0,.45)),url('/assets/home/hero-bg.svg');background-position:center;background-size:cover;background-repeat:no-repeat}
.hero .container{text-align:left}.hero h1{font-family:"Mulish","Microsoft YaHei",sans-serif;font-weight:800;font-size:var(--h1-hero);margin:0 0 14px;max-width:720px}.hero p{font-family:"Roboto","Microsoft YaHei",sans-serif;font-size:var(--p-hero);opacity:.95;margin:0 auto 0 0;max-width:720px}
.hero .cta-set{display:flex;gap:12px;margin-top:22px;justify-content:flex-start;flex-wrap:wrap;max-width:720px}.btn{display:inline-block;padding:12px 16px;border-radius:999px;border:1px solid #333;background:#fff;color:#111;box-shadow:var(--shadow);transition:all .2s ease}
.btn.btn-products{padding:14px 32px;background:linear-gradient(135deg,#000,#333);color:#fff;border-color:#000}.btn.btn-products:hover{background:linear-gradient(135deg,#333,#000);filter:brightness(1.05)}
.btn.btn-contact{padding:14px 32px;background:linear-gradient(135deg,#fff,#ececec);color:#000;border-color:#444}.btn.btn-contact:hover{background:linear-gradient(135deg,#f5f5f5,#ffffff);filter:contrast(1.05)}
.section{padding:clamp(44px,8.4vh,88px) 0}.block{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:center}.block.reverse{grid-template-columns:.9fr 1.1fr}@media (max-width:900px){.block,.block.reverse{grid-template-columns:1fr}}
.phimg{aspect-ratio:16/9;background:#eef2f3;border:1px dashed #bbb;border-radius:16px;display:flex;align-items:center;justify-content:center;color:#777}.section h2{margin:0 0 10px;font-weight:800;font-size:clamp(22px,3vw,34px)}
.footer{padding:28px 0;margin-top:44px;background:#0c0c0c;color:#aaa}.footer .grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}@media (max-width:900px){.footer .grid{grid-template-columns:1fr}}
.footer h3{margin:0 0 8px;font-size:clamp(18px,2.4vw,22px);color:#fff;text-align:left}.footer p{margin:6px 0 14px;text-align:left;font-size:clamp(16px,1.5vw,20px)}
.footer .footer-socials{display:flex;gap:16px;align-items:center}.footer .footer-socials a{display:inline-flex;align-items:center;justify-content:center;width:76px;height:76px;border-radius:999px;border:1px solid #333;background:#111;color:#fff;box-shadow:0 8px 26px rgba(0,0,0,.24)}.footer .footer-socials svg{width:36px;height:36px}
.footer .contact-list{list-style:none;margin:0;padding:0;display:grid;gap:10px;font-size:clamp(16px,1.5vw,20px)}.footer .contact-item{display:flex;gap:10px;align-items:flex-start}.footer .icon{width:20px;height:20px;flex:0 0 20px;color:#fff;opacity:.9;margin-top:2px}
.rfq-sticky{position:fixed;right:18px;bottom:18px;z-index:50;width:min(360px,92vw);background:#fff;border:1px solid #ddd;border-radius:16px;box-shadow:0 18px 44px rgba(0,0,0,.22);overflow:hidden}.rfq-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid #eee;background:#fafafa}
.rfq-title{font-weight:800;margin:0;display:flex;align-items:center}.rfq-toggle{border:0;background:#0000000a;border-radius:10px;width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.rfq-body{padding:14px;display:block}
.rfq-collapsed .rfq-body{display:none}.rfq-collapsed{width:auto}.rfq-collapsed .rfq-head{background:#16a34a;color:#fff;border-bottom-color:#16a34a}.rfq-collapsed .rfq-toggle{background:rgba(255,255,255,.15);color:#fff}.rfq-head .icon-contact{width:18px;height:18px;margin-right:8px;opacity:.95}.rfq-sticky form label{display:block;margin-bottom:8px}.rfq-sticky input,.rfq-sticky textarea{width:100%;display:block;padding:12px;border:1px solid #ddd;border-radius:10px;font:inherit;background:#fff}.rfq-sticky .btn{width:100%}@media (max-width:480px){.rfq-sticky{left:10px;right:10px;bottom:10px;width:auto}}
.contact-head h1{font-family:"Mulish",sans-serif;font-weight:800;font-size:var(--h1-contact);margin:0 0 12px}
.contact-info{background:#fff;border:1px solid #e6e6e6;border-radius:14px;height:360px;padding:22px 22px}
.contact-map iframe{height:360px;width:100%;border:0}
@media (min-width:901px){.contact-grid{display:grid;grid-template-columns:0.95fr 1.05fr;gap:24px}}
@media (max-width:900px){.contact-grid{display:grid;grid-template-columns:1fr;gap:16px}}
.contact-info .co-name{font-size:16px;font-weight:700;margin-bottom:12px}
.contact-info .row{display:flex;gap:8px;align-items:flex-start;margin:14px 0}
.contact-info .row .label{font-weight:800;color:#000;min-width:64px}
.contact-info .row .value{color:#555;font-weight:400}
.contact-info{font-family:"Roboto","Microsoft YaHei",sans-serif;font-size:20px;font-weight:400;line-height:1.7}
.about-article h1{font-family:"Roboto","Microsoft YaHei",sans-serif!important;font-weight:700;font-size:var(--h1-hero)}