:root{--blue:#0b3d91;--dark:#1d1d1f;--accent:#e8611a;--gray:#f5f5f7;--text:#2b3445;--line:#e3e8ef}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);line-height:1.7;background:#fff;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.container.wide{max-width:1440px}
.topbar{background:#161617;color:#a1a1a6;font-size:12px;padding:7px 0}
.topbar .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px}
.topbar a{color:#d8d8dc}
header.site{background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(16px);-webkit-backdrop-filter:saturate(180%) blur(16px);position:sticky;top:0;z-index:50;box-shadow:0 1px 0 rgba(0,0,0,.08)}
header.site .container{display:flex;align-items:center;justify-content:space-between;min-height:76px;padding-top:8px;padding-bottom:8px}
.logo{display:flex;align-items:center;gap:10px;color:var(--blue)}
.logo img{width:auto;display:block}
.logo-txt{color:#111;font-weight:700;line-height:1.2}
nav.main{display:flex;gap:28px;align-items:center}
nav.main a{font-size:15px;font-weight:500;color:#333;padding:8px 0;border-bottom:2px solid transparent}
nav.main a:hover,nav.main a.on{color:var(--blue);border-bottom-color:var(--accent)}
nav.main .tel{color:var(--accent);font-weight:700}
.menu-btn{display:none;font-size:26px;background:none;border:none;cursor:pointer}
/* ===== 页头版本 ===== */
.hv1 .logo{flex-direction:column;align-items:center;gap:2px}
.hv1 .logo img{height:36px}
.hv1 .logo-txt{font-size:14px;color:#111}
.hv2 .logo{flex-direction:column;align-items:flex-start;gap:2px}
.hv2 .logo img{height:38px}
.hv2 .logo-txt{font-size:13px;color:#111;letter-spacing:2px}
.hv3 .logo{flex-direction:column;align-items:center;gap:1px}
.hv3 .logo img{height:44px}
.hv3 .logo-txt{font-size:13px;color:#111;letter-spacing:4px}
.hv3 .logo-sub{font-size:9px;color:#86868b;letter-spacing:3px}
/* ===== 横幅轮播 ===== */
.hero{position:relative;height:440px;overflow:hidden;background:#0a1226}
.hero .slide{position:absolute;inset:0;background-size:cover;background-position:center right;opacity:0;transition:opacity 1.2s ease;display:flex;align-items:center}
.hero .slide.cur{opacity:1}
.hero .slide .inner{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;color:#fff}
.hero .kicker{font-size:14px;letter-spacing:3px;opacity:.75;margin-bottom:10px}
.hero h1{font-size:52px;font-weight:700;letter-spacing:1px;text-shadow:0 2px 20px rgba(0,0,0,.35)}
.hero .sub{font-size:17px;opacity:.92;margin-top:12px;max-width:520px}
.heroB .slide .inner{text-align:center}
.heroB .slide{background-position:center}
.heroB .slide::before{content:"";position:absolute;inset:0;background:rgba(8,15,35,.35)}
.heroB .slide .inner{position:relative}
.heroB .sub{margin-left:auto;margin-right:auto}
.hero .dots{position:absolute;bottom:22px;left:0;right:0;display:flex;justify-content:center;gap:10px;z-index:5}
.hero .dots i{width:26px;height:4px;border-radius:2px;background:rgba(255,255,255,.35);cursor:pointer;transition:.3s}
.hero .dots i.cur{background:#fff}
/* 右侧随动小按钮 */
.side-quote{position:fixed;right:0;top:50%;transform:translateY(-50%);z-index:60;background:var(--accent);color:#fff;writing-mode:vertical-rl;padding:16px 9px;border-radius:8px 0 0 8px;font-size:14px;letter-spacing:4px;font-weight:600;box-shadow:-4px 0 14px rgba(0,0,0,.18);transition:.2s}
.side-quote:hover{background:#cf5212;padding-right:14px}
/* sections */
section{padding:72px 0}
.sec-title{text-align:center;margin-bottom:46px}
.sec-title h2{font-size:34px;color:var(--dark);font-weight:700;letter-spacing:.5px}
.sec-title .en{display:block;font-size:13px;letter-spacing:3px;color:#86868b;margin-top:6px;text-transform:uppercase}
.gray{background:var(--gray)}
/* ===== 产品系列大卡 ===== */
.cats{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.cat-card{background:#fff;border-radius:18px;overflow:hidden;box-shadow:0 4px 24px rgba(0,0,0,.06);transition:.3s;display:flex;flex-direction:column}
.cat-card:hover{transform:translateY(-8px);box-shadow:0 18px 44px rgba(11,61,145,.14)}
.cat-card .pic{position:relative;height:0;padding-bottom:100%;background:linear-gradient(180deg,#fafbfd,#eef1f6);overflow:hidden}
.cat-card .pic img{position:absolute;top:22px;left:22px;right:22px;bottom:22px;width:calc(100% - 44px);height:calc(100% - 44px);object-fit:contain}
.cat-card .t{padding:20px 22px 24px;flex:1;display:flex;flex-direction:column}
.cat-card .t h3{font-size:19px;color:var(--dark);margin-bottom:2px}
.cat-card .t .en{font-size:12px;color:#86868b;letter-spacing:1px;margin-bottom:8px}
.cat-card .t p{font-size:13.5px;color:#6e7686;flex:1}
.cat-card .t .go{margin-top:14px;color:var(--blue);font-weight:600;font-size:14px}
.cat-card .t .go::after{content:" →";transition:.2s}
.cat-card:hover .t .go::after{margin-left:4px}
/* 热销产品小卡 */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.05);transition:.25s;display:block}
.card:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(0,0,0,.1)}
.card .pic{height:170px;background:#fff;padding:12px}
.card .pic img{width:100%;height:100%;object-fit:contain}
.card .n{padding:12px 14px;font-weight:600;font-size:14.5px;color:var(--dark);border-top:1px solid #f0f2f6;text-align:center}
/* why */
.whys{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.why{background:#fff;padding:30px 24px;border-radius:16px;box-shadow:0 2px 12px rgba(0,0,0,.05)}
.why h3{color:var(--blue);font-size:17px;margin-bottom:10px}
.why p{font-size:14px;color:#555d6e}
/* 产品详情 */
.detail{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.detail .picbox{background:linear-gradient(180deg,#fafbfd,#eef1f6);border-radius:18px;padding:26px}
.detail .picbox img{display:block;margin:0 auto;max-height:460px;max-width:100%;object-fit:contain}
.detail h1{font-size:30px;color:var(--dark);margin-bottom:6px}
.crumb{font-size:13.5px;color:#86868b;margin:20px 0 30px}
.crumb a{color:var(--blue)}
table.spec{width:100%;border-collapse:collapse;margin-top:16px;font-size:14.5px;background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 1px 6px rgba(0,0,0,.05)}
table.spec th,table.spec td{border-bottom:1px solid #eef1f5;padding:10px 14px;text-align:left}
table.spec th{width:40%;font-weight:600;color:var(--dark)}
table.spec tr.head td{background:var(--blue);color:#fff;font-weight:700;text-align:center}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:13px 30px;border-radius:980px;font-weight:600;font-size:15px;transition:.2s;border:none;cursor:pointer}
.btn:hover{background:#cf5212;transform:translateY(-1px)}
.btn.ghost{background:transparent;border:1.5px solid var(--blue);color:var(--blue)}
.btn.ghost:hover{background:var(--blue);color:#fff}
/* ===== 联系我们（苹果风）===== */
.contact-hero{background:var(--gray);text-align:center;padding:96px 20px 80px}
.contact-hero h1{font-size:56px;font-weight:700;color:var(--dark);letter-spacing:1px}
.contact-hero p{font-size:19px;color:#6e6e73;margin-top:16px;max-width:640px;margin-left:auto;margin-right:auto}
.p-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:960px;margin:0 auto}
.p-card{background:#fff;border-radius:20px;padding:38px 28px;text-align:center;box-shadow:0 4px 24px rgba(0,0,0,.05);transition:.3s}
.p-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(0,0,0,.1)}
.p-card .avatar{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,var(--blue),#2f6fd6);color:#fff;font-size:26px;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 18px}
.p-card h3{font-size:19px;color:var(--dark)}
.p-card .role{font-size:13px;color:#86868b;margin:2px 0 14px}
.p-card .num{font-size:21px;font-weight:700;color:var(--blue);letter-spacing:.5px}
.p-card .acts{margin-top:18px;display:flex;gap:10px;justify-content:center}
.p-card .acts a{font-size:13.5px;padding:8px 18px;border-radius:980px;border:1.5px solid var(--blue);color:var(--blue);font-weight:600;transition:.2s}
.p-card .acts a:hover{background:var(--blue);color:#fff}
.p-card .acts a.wa{border-color:#25d366;color:#1da851}
.p-card .acts a.wa:hover{background:#25d366;color:#fff}
.c-info{display:flex;justify-content:center;gap:56px;flex-wrap:wrap;text-align:center;margin-top:64px}
.c-info div{max-width:280px}
.c-info .ico{font-size:24px;margin-bottom:10px}
.c-info b{display:block;color:var(--dark);margin-bottom:4px}
.c-info span{font-size:14px;color:#6e6e73}
form.inq{max-width:640px;margin:0 auto;background:#fff;border-radius:24px;padding:44px;box-shadow:0 4px 28px rgba(0,0,0,.06)}
form.inq h2{text-align:center;font-size:24px;color:var(--dark);margin-bottom:8px}
form.inq .tip{text-align:center;font-size:13px;color:#86868b;margin-bottom:26px}
form.inq input,form.inq textarea{width:100%;padding:15px 18px;border:1px solid #d9dde3;border-radius:12px;margin-bottom:14px;font-size:15px;font-family:inherit;background:#fbfbfd;transition:.2s}
form.inq input:focus,form.inq textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(11,61,145,.12);background:#fff}
form.inq textarea{min-height:130px;resize:vertical}
form.inq .btn{width:100%;padding:15px;font-size:16px}
/* 搜索 */
.searchbar{max-width:640px;margin:0 auto 36px;display:flex}
.searchbar input{flex:1;padding:13px 18px;border:1.5px solid #d9dde3;border-right:none;border-radius:980px 0 0 980px;font-size:15px;outline:none;padding-left:22px}
.searchbar button{background:var(--blue);color:#fff;border:none;padding:0 30px;border-radius:0 980px 980px 0;font-size:15px;cursor:pointer}
/* footer */
footer{background:#161617;color:#a1a1a6;padding:56px 0 26px;font-size:13.5px}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:34px;margin-bottom:34px}
footer h4{color:#f5f5f7;margin-bottom:14px;font-size:15px}
footer a{display:block;padding:3px 0;color:#a1a1a6}
footer a:hover{color:#fff}
footer .copy{text-align:center;border-top:1px solid #2c2c2e;padding-top:20px;font-size:12.5px}
footer .copy a{display:inline;color:#86868b}
.float-call{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px}
.float-call a{width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-weight:700;box-shadow:0 6px 16px rgba(0,0,0,.22)}
.float-call .telb{background:var(--accent)}
.float-call .wab{background:#25d366}
@media(max-width:960px){
.cats{grid-template-columns:repeat(2,1fr)}
.grid,.whys{grid-template-columns:repeat(2,1fr)}
.p-cards{grid-template-columns:1fr;max-width:420px}
.detail{grid-template-columns:1fr}
footer .cols{grid-template-columns:1fr}
.hero{height:340px}
.hero .slide{background-position:72% center}
.hero h1{font-size:32px}
.contact-hero h1{font-size:36px}
form.inq{padding:30px 22px}
nav.main{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;padding:10px 20px;box-shadow:0 10px 20px rgba(0,0,0,.1)}
nav.main.open{display:flex}
.menu-btn{display:block}
.side-quote{display:none}
}
@media(max-width:520px){
.cats,.grid,.whys{grid-template-columns:1fr}
.hero{height:300px}
.hero .slide{background-position:78% center}
.hero h1{font-size:25px}
.contact-hero{padding:64px 20px 52px}
.topbar{font-size:11px;padding:5px 0}
.topbar .container{justify-content:center;text-align:center}
}