/* ============================================================
   苏州密泰新材料 · 官网样式
   主色沿用品牌蓝 #1f5ec5 / #104fa2，做现代化重塑
   ============================================================ */
:root{
    --brand:#1f5ec5;
    --brand-d:#104fa2;
    --brand-l:#eef4ff;
    --brand-l2:#dfeafd;
    --ink:#16233a;
    --ink-2:#3c4a5f;
    --muted:#6b7a90;
    --line:#e4eaf2;
    --soft:#f5f8fc;
    --accent:#ef7600;
    --radius:14px;
    --radius-s:10px;
    --shadow:0 6px 24px rgba(16,79,162,.08);
    --shadow-h:0 14px 40px rgba(16,79,162,.16);
    --container:1280px;
    --head-h:74px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
    margin:0;color:var(--ink);background:#fff;
    font:15px/1.75 -apple-system,BlinkMacSystemFont,"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    overflow-x:hidden;
}
img{max-width:100%;height:auto;border:0;vertical-align:middle}
a{color:inherit;text-decoration:none;transition:color .2s}
a:hover{color:var(--brand)}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.35;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input,textarea,select,button{font:inherit;color:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.ic{width:1em;height:1em;fill:currentColor;vertical-align:-.12em}

/* ---------------- 按钮 ---------------- */
.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:.5em;
    padding:0 24px;height:44px;border-radius:999px;border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
    transition:all .22s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(31,94,197,.28)}
.btn-primary:hover{background:var(--brand-d);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(31,94,197,.34)}
.btn-light{background:#fff;color:var(--brand-d)}
.btn-light:hover{color:var(--brand);transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.16)}
.btn-ghost{border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.12);color:#fff}
.btn-block{width:100%}
.btn-sm{height:36px;padding:0 16px;font-size:13.5px}

/* ---------------- 顶栏 ---------------- */
.topbar{background:var(--brand-d);color:rgba(255,255,255,.88);font-size:13px}
.topbar-in{display:flex;align-items:center;justify-content:space-between;height:38px}
.tb-right{display:flex;align-items:center;gap:22px}
.tb-item{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.88)}
.tb-item:hover{color:#fff}
.tb-item .ic{font-size:14px}

/* ---------------- 页头 ---------------- */
.header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line)}
.header.is-stuck{box-shadow:0 2px 18px rgba(16,79,162,.10)}
.header-in{display:flex;align-items:center;gap:24px;height:var(--head-h)}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.logo img{height:42px;width:auto}
.logo-txt{display:flex;flex-direction:column;line-height:1.15}
.logo-txt b{font-size:19px;letter-spacing:.5px;color:var(--brand-d)}
.logo-txt i{font-style:normal;font-size:9.5px;letter-spacing:1.6px;color:var(--muted)}

.nav{flex:1 1 auto;min-width:0}
.nav>ul{display:flex;align-items:center;gap:4px}
.nav>ul>li{position:relative}
.nav>ul>li>a{
    display:block;padding:0 15px;height:var(--head-h);line-height:var(--head-h);
    font-size:15.5px;font-weight:600;color:var(--ink-2);position:relative;
}
.nav>ul>li>a:hover,.nav>ul>li:hover>a{color:var(--brand)}
.nav>ul>li>a.on{color:var(--brand)}
.nav>ul>li>a.on::after,.nav>ul>li:hover>a::after{
    content:'';position:absolute;left:15px;right:15px;bottom:16px;height:3px;border-radius:2px;background:var(--brand);
}
.caret{display:inline-block;width:5px;height:5px;margin-left:6px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:translateY(-2px) rotate(45deg)}

.sub{
    position:absolute;left:50%;top:100%;transform:translate(-50%,10px);
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow-h);padding:22px 24px;display:flex;gap:30px;
    opacity:0;visibility:hidden;transition:all .24s ease;min-width:420px;
}
.nav>ul>li:hover .sub{opacity:1;visibility:visible;transform:translate(-50%,0)}
.sub-col{min-width:150px}
.sub-simple{min-width:180px;padding:14px 8px}
.sub-title{display:block;font-size:15px;font-weight:700;color:var(--ink);margin-bottom:10px;padding-left:14px;position:relative}
.sub-title::before{content:'';position:absolute;left:0;top:7px;width:4px;height:14px;border-radius:2px;background:var(--brand)}
.sub-title.line{margin:0;padding:9px 10px;font-size:14.5px;font-weight:500;color:var(--ink-2);border-radius:8px}
.sub-title.line::before{display:none}
.sub-title.line:hover{background:var(--brand-l);color:var(--brand)}
.sub-links{display:flex;flex-direction:column}
.sub-links a{font-size:14px;color:var(--muted);padding:5px 0 5px 14px;border-left:1px solid var(--line);position:relative}
.sub-links a:hover{color:var(--brand);border-left-color:var(--brand)}

.head-act{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink-2);display:grid;place-items:center}
.search-btn:hover{border-color:var(--brand);color:var(--brand)}
.search-btn .ic{font-size:18px}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;padding:11px 10px;flex-direction:column;justify-content:space-between}
.burger span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.burger.on span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.burger.on span:nth-child(2){opacity:0}
.burger.on span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

.search-panel{position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none}
.search-panel.on{display:block}
.search-form{display:flex;align-items:center;gap:12px;padding:16px 24px;position:relative}
.search-form input{flex:1;height:46px;border:1px solid var(--line);border-radius:999px;padding:0 20px;outline:none}
.search-form input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-l)}
.search-close{border:0;background:none;font-size:26px;line-height:1;color:var(--muted);cursor:pointer}

/* ---------------- 主视觉 ---------------- */
.hero{position:relative;background:var(--brand-d)}
.hero-slider{position:relative;height:520px;overflow:hidden}
.hero-slide{
    position:absolute;inset:0;opacity:0;transition:opacity .8s ease;
    background-size:cover;background-position:center;
}
.hero-slide::before{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(9,40,90,.90) 0%,rgba(9,40,90,.72) 42%,rgba(9,40,90,.24) 100%)}
.hero-slide.on{opacity:1}
.hero-in{position:relative;height:100%;display:flex;align-items:center}
.hero-copy{max-width:640px;color:#fff}
.hero-tag{display:inline-block;padding:5px 14px;border:1px solid rgba(255,255,255,.42);border-radius:999px;font-size:12px;letter-spacing:2px;margin-bottom:20px}
.hero-copy h1{font-size:52px;line-height:1.2;color:#fff;margin-bottom:18px;letter-spacing:-.5px}
.hero-copy p{font-size:17.5px;color:rgba(255,255,255,.86);margin-bottom:32px;max-width:560px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-dots{position:absolute;left:50%;bottom:112px;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.hero-dots button{width:34px;height:4px;border:0;border-radius:3px;background:rgba(255,255,255,.4);cursor:pointer;padding:0;transition:.25s}
.hero-dots button.on{background:#fff;width:52px}

.hero-feat{
    position:relative;z-index:4;margin-top:-72px;background:#fff;border-radius:var(--radius);
    box-shadow:var(--shadow-h);display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;
}
.hero-feat li{padding:26px 26px;display:flex;flex-direction:column;gap:3px;border-right:1px solid var(--line)}
.hero-feat li:last-child{border-right:0}
.hero-feat .ic{font-size:24px;color:var(--brand);margin-bottom:6px}
.hero-feat b{font-size:16px}
.hero-feat span{font-size:13.5px;color:var(--muted)}

/* ---------------- 区块 ---------------- */
.sec{padding:78px 0}
.sec-soft{background:var(--soft)}
.sec-dark{background:linear-gradient(120deg,#0b3273,#104fa2 55%,#1f5ec5);color:#fff}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:42px}
.sec-head.center{justify-content:center;text-align:center}
.sec-en{display:block;font-size:12.5px;letter-spacing:3px;font-weight:700;color:var(--brand);margin-bottom:8px}
.sec-en.light{color:rgba(255,255,255,.66)}
.sec-head h2{font-size:34px;letter-spacing:-.5px;position:relative;padding-bottom:14px}
.sec-head h2::after{content:'';position:absolute;left:0;bottom:0;width:48px;height:4px;border-radius:2px;background:var(--brand)}
.sec-head.center h2::after{left:50%;transform:translateX(-50%)}
.sec-dark .sec-head h2{color:#fff}
.sec-head p{color:var(--muted);margin-top:12px;font-size:15px;max-width:720px}
.more{color:var(--brand);font-weight:600;font-size:14.5px;white-space:nowrap;display:inline-flex;align-items:center;gap:4px}
.more i{font-style:normal;font-size:18px;transition:transform .2s}
.more:hover i{transform:translateX(4px)}

/* ---------------- 产品分类卡 ---------------- */
.cat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.cat-card{display:flex;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:all .28s}
.cat-card:hover{box-shadow:var(--shadow-h);transform:translateY(-3px);border-color:var(--brand-l2)}
.cat-img{flex:0 0 210px;background:var(--soft);overflow:hidden}
.cat-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.cat-card:hover .cat-img img{transform:scale(1.06)}
.cat-body{flex:1;padding:26px 26px 22px;min-width:0}
.cat-body h3{font-size:20px;margin-bottom:10px}
.cat-body p{color:var(--muted);font-size:14px;margin-bottom:16px;min-height:44px}
.cat-links{display:flex;flex-wrap:wrap;gap:8px}
.cat-links a{font-size:13px;padding:4px 12px;border-radius:999px;background:var(--brand-l);color:var(--brand-d)}
.cat-links a:hover{background:var(--brand);color:#fff}

/* ---------------- 应用领域 ---------------- */
.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.app-card{position:relative;display:block;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;background:var(--brand-l)}
.app-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.app-card::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(10,34,72,.86),rgba(10,34,72,0) 62%)}
.app-card:hover img{transform:scale(1.07)}
.app-name{position:absolute;left:0;right:0;bottom:0;padding:18px;color:#fff;font-weight:700;font-size:16.5px;z-index:2}

/* ---------------- 快速入口（图标式，不依赖图片） ---------------- */
.quick-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:14px}
.quick-card{
    display:flex;flex-direction:column;align-items:center;gap:10px;position:relative;
    padding:24px 12px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    transition:all .26s;text-align:center;
}
.quick-card b{font-size:14.5px;color:var(--ink);font-weight:700;letter-spacing:.2px}
.quick-card i{position:absolute;right:12px;top:10px;color:var(--line);font-style:normal;font-size:16px;transition:.26s}
.quick-card:hover{border-color:var(--brand);box-shadow:var(--shadow-h);transform:translateY(-4px)}
.quick-card:hover b{color:var(--brand)}
.quick-card:hover i{color:var(--brand);right:10px}
.quick-ico{
    width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
    background:var(--brand-l);color:var(--brand);transition:.26s;
}
.quick-ico .ic{width:26px;height:26px;fill:currentColor}
.quick-card:hover .quick-ico{background:var(--brand);color:#fff}

/* ---------------- 产品卡 ---------------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:all .28s;display:flex;flex-direction:column}
.prod-card:hover{box-shadow:var(--shadow-h);transform:translateY(-4px);border-color:var(--brand-l2)}
.prod-img{display:block;aspect-ratio:1/1;background:var(--soft);overflow:hidden}
.prod-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.prod-card:hover .prod-img img{transform:scale(1.07)}
.prod-body{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
.prod-body h3{font-size:16px;line-height:1.5;margin-bottom:8px;min-height:44px}
.prod-body p{color:var(--muted);font-size:13px;flex:1;margin-bottom:12px}
.prod-more{color:var(--brand);font-size:13.5px;font-weight:600}

/* ---------------- 企业实力 ---------------- */
.strength-in{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.str-copy h2{font-size:32px;color:#fff;margin:8px 0 18px;letter-spacing:-.5px}
.str-copy p{color:rgba(255,255,255,.82);margin-bottom:22px;font-size:15px}
.str-list{margin-bottom:28px}
.str-list li{position:relative;padding-left:26px;color:rgba(255,255,255,.9);margin-bottom:11px;font-size:15px}
.str-list li::before{content:'';position:absolute;left:0;top:9px;width:14px;height:8px;border-left:2px solid #7fb2ff;border-bottom:2px solid #7fb2ff;transform:rotate(-45deg)}
.str-stat{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.str-stat .st{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);padding:26px 22px;text-align:center}
.str-stat b{display:block;font-size:38px;color:#fff;line-height:1;letter-spacing:-1px}
.str-stat b i{font-style:normal;font-size:16px;margin-left:3px;color:#9cc4ff}
.str-stat span{display:block;margin-top:10px;font-size:13.5px;color:rgba(255,255,255,.72)}

/* ---------------- 案例 ---------------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:all .28s}
.case-card:hover{box-shadow:var(--shadow-h);transform:translateY(-4px)}
.case-img{aspect-ratio:16/10;background:var(--soft);overflow:hidden}
.case-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-card:hover .case-img img{transform:scale(1.06)}
.case-body{padding:20px 22px 22px}
.case-body h3{font-size:16.5px;margin-bottom:8px}
.case-body p{color:var(--muted);font-size:13.5px}

/* ---------------- 新闻 ---------------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:all .28s;height:100%}
.news-card:hover{box-shadow:var(--shadow-h);transform:translateY(-4px);border-color:var(--brand-l2)}
.news-card a{display:block;padding:24px;height:100%}
.news-card time{font-size:12.5px;color:var(--brand);font-weight:600;letter-spacing:.4px}
.news-card h3{font-size:16.5px;line-height:1.5;margin:10px 0 10px;min-height:50px}
.news-card p{color:var(--muted);font-size:13.5px;margin-bottom:14px;min-height:60px}
.news-more{color:var(--brand);font-size:13.5px;font-weight:600}

/* ---------------- 合作伙伴 ---------------- */
.partner-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.partner{display:grid;place-items:center;height:92px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-s);color:var(--ink-2);font-weight:600;font-size:14.5px;transition:.25s}
.partner:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--shadow)}
.partner img{max-height:52px;width:auto;filter:grayscale(1);opacity:.75;transition:.3s}
.partner:hover img{filter:none;opacity:1}

/* ---------------- 底部咨询 ---------------- */
.sec-cta{background:linear-gradient(120deg,#eef4ff,#f7fbff)}
.cta-in{display:grid;grid-template-columns:1fr 420px;gap:56px;align-items:center}
.cta-copy h2{font-size:30px;margin-bottom:14px;letter-spacing:-.5px}
.cta-copy p{color:var(--muted);margin-bottom:24px;max-width:560px}
.cta-tel{display:flex;align-items:baseline;gap:12px}
.cta-tel span{color:var(--muted);font-size:14px}
.cta-tel a{font-size:32px;font-weight:800;color:var(--brand-d);letter-spacing:-.5px}
.cta-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form label{display:block;margin-bottom:12px}
.form label>span{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px;font-weight:600}
.form label em{color:#d33;font-style:normal;margin-left:3px}
.form input,.form textarea{
    width:100%;border:1px solid var(--line);border-radius:var(--radius-s);padding:11px 14px;outline:none;
    transition:.2s;background:#fbfdff;font-size:14.5px;
}
.form input:focus,.form textarea:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px var(--brand-l)}
.form textarea{resize:vertical}
.form-tip{font-size:12.5px;color:var(--muted);margin-top:10px;text-align:center}

/* ---------------- 页脚 ---------------- */
.footer{background:#0d1c33;color:rgba(255,255,255,.68);padding-top:58px;font-size:13.5px}
.footer-in{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.1fr;gap:34px;padding-bottom:44px}
.fcol h4{color:#fff;font-size:15.5px;margin-bottom:18px;position:relative;padding-bottom:12px}
.fcol h4::after{content:'';position:absolute;left:0;bottom:0;width:28px;height:2px;background:var(--brand)}
.fcol ul li{margin-bottom:9px}
.fcol ul a{color:rgba(255,255,255,.66)}
.fcol ul a:hover{color:#fff}
.flogo img{height:40px;filter:brightness(0) invert(1);opacity:.95}
.fdesc{margin:16px 0 18px;line-height:1.8;max-width:330px}
.fcontact .fphone{display:block;font-size:23px;font-weight:800;color:#fff;letter-spacing:-.3px}
.fcontact .fmail a{color:rgba(255,255,255,.7)}
.faddr{line-height:2}
.qr{margin-top:14px;text-align:center;display:inline-block}
.qr img{width:104px;border-radius:8px;background:#fff;padding:5px}
.qr span{display:block;font-size:12px;margin-top:6px;color:rgba(255,255,255,.6)}
.foot-bar{border-top:1px solid rgba(255,255,255,.1)}
.foot-bar-in{display:flex;align-items:center;justify-content:space-between;height:60px;gap:18px;flex-wrap:wrap;font-size:13px}
.foot-links{display:flex;gap:18px}
.foot-links a:hover{color:#fff}

/* ---------------- 移动端底部栏 ---------------- */
.mbar{
    display:none;position:fixed;left:0;right:0;bottom:0;z-index:120;
    background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
}
.mbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:9px 0;font-size:11.5px;color:var(--ink-2)}
.mbar .ic{font-size:20px}
.mbar-tel{color:var(--brand)!important}

/* ---------------- 侧边工具 ---------------- */
.side-tools{position:fixed;right:18px;bottom:110px;z-index:110;display:flex;flex-direction:column;gap:10px}
.st-item{
    width:56px;height:56px;border-radius:14px;background:#fff;border:1px solid var(--line);
    box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:2px;font-size:11px;color:var(--ink-2);cursor:pointer;transition:.22s;padding:0;
}
.st-item .ic{font-size:20px;color:var(--brand)}
.st-item:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px)}
.st-item:hover .ic{color:#fff}

/* ---------------- 弹窗 ---------------- */
.modal{position:fixed;inset:0;z-index:200;background:rgba(11,26,49,.62);display:none;align-items:center;justify-content:center;padding:20px}
.modal.on{display:flex}
.modal-box{background:#fff;border-radius:var(--radius);max-width:560px;width:100%;padding:34px;position:relative;max-height:92vh;overflow:auto;box-shadow:0 30px 80px rgba(0,0,0,.3)}
.modal-x{position:absolute;right:16px;top:12px;border:0;background:none;font-size:28px;line-height:1;color:var(--muted);cursor:pointer}
.modal-box h3{font-size:21px;margin-bottom:8px}
.modal-sub{color:var(--muted);font-size:14px;margin-bottom:20px}
.modal-ok{text-align:center;padding:26px 0}
.ok-ico{width:60px;height:60px;margin:0 auto 16px;border-radius:50%;background:#e8f6ec;color:#1a9b48;display:grid;place-items:center;font-size:30px;font-weight:700}

/* ---------------- 内页通用 ---------------- */
.crumb{background:var(--soft);border-bottom:1px solid var(--line);padding:16px 0}
.crumb ul{display:flex;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--muted)}
.crumb li+li::before{content:'/';margin-right:8px;color:#c3cedd}
.crumb a:hover{color:var(--brand)}

.page-hero{
    background:linear-gradient(120deg,#0b3273,#104fa2 60%,#1f5ec5);color:#fff;
    padding:64px 0;position:relative;overflow:hidden;
}
.page-hero::after{content:'';position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.06)}
.page-hero h1{font-size:36px;color:#fff;letter-spacing:-.5px}
.page-hero p{margin-top:12px;color:rgba(255,255,255,.8);max-width:760px}

.layout{display:grid;grid-template-columns:264px 1fr;gap:40px;align-items:start;padding:56px 0 76px}
.side{position:sticky;top:calc(var(--head-h) + 20px)}
.side-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:20px}
.side-head{background:var(--brand-d);color:#fff;padding:16px 20px;font-weight:700;font-size:16px}
.side-head span{display:block;font-size:11px;opacity:.7;letter-spacing:1.4px;font-weight:400}
.side-nav a{display:flex;align-items:center;justify-content:space-between;padding:13px 20px;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink-2)}
.side-nav a:last-child{border-bottom:0}
.side-nav a:hover,.side-nav a.on{background:var(--brand-l);color:var(--brand);padding-left:26px}
.side-nav a i{font-style:normal;color:#c3cedd}
.side-contact{padding:22px 20px;background:linear-gradient(150deg,#0f3f86,#1f5ec5);color:#fff}
.side-contact h4{color:#fff;font-size:15px;margin-bottom:14px}
.side-contact .sc-tel{font-size:22px;font-weight:800;color:#fff;display:block;margin-bottom:6px;letter-spacing:-.3px}
.side-contact p{font-size:13px;color:rgba(255,255,255,.76);line-height:1.9}
.side-hot a{display:block;padding:11px 20px;border-bottom:1px solid var(--line);font-size:13.5px;color:var(--ink-2);line-height:1.6}
.side-hot a:last-child{border-bottom:0}
.side-hot a:hover{color:var(--brand);background:var(--soft)}

.main{min-width:0}
.main-head{margin-bottom:26px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.main-head h2{font-size:26px;letter-spacing:-.4px}
.main-head p{color:var(--muted);margin-top:8px;font-size:14.5px}

/* 富文本内容 */
.rich{font-size:15.5px;line-height:1.95;color:var(--ink-2);word-break:break-word}
.rich p{margin:0 0 16px}
.rich h2,.rich h3,.rich h4{margin:28px 0 14px;color:var(--ink)}
.rich h2{font-size:22px}
.rich h3{font-size:19px}
.rich img{max-width:100%;height:auto;border-radius:var(--radius-s);margin:12px 0}
.rich ul{margin:0 0 16px;padding-left:22px;list-style:disc}
.rich ol{margin:0 0 16px;padding-left:22px;list-style:decimal}
.rich li{margin-bottom:8px}
.rich table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
.rich th,.rich td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.rich th{background:var(--soft);font-weight:700;color:var(--ink)}
.rich a{color:var(--brand);text-decoration:underline}
.rich strong,.rich b{color:var(--ink);font-weight:700}
.rich blockquote{margin:18px 0;padding:14px 20px;background:var(--soft);border-left:4px solid var(--brand);border-radius:0 8px 8px 0;color:var(--ink-2)}

/* 详情页 */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;margin-bottom:48px}
.gallery-main{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--soft);aspect-ratio:1/1}
.gallery-main img{width:100%;height:100%;object-fit:cover}
.gallery-thumbs{display:flex;gap:12px;margin-top:12px;flex-wrap:wrap}
.gallery-thumbs button{width:76px;height:76px;border:1px solid var(--line);border-radius:var(--radius-s);overflow:hidden;background:var(--soft);cursor:pointer;padding:0}
.gallery-thumbs button.on{border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-l)}
.gallery-thumbs img{width:100%;height:100%;object-fit:cover}
.detail-info h1{font-size:27px;line-height:1.4;margin-bottom:14px;letter-spacing:-.4px}
.detail-sub{color:var(--muted);font-size:15px;line-height:1.9;padding-bottom:20px;border-bottom:1px dashed var(--line);margin-bottom:20px}
.detail-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.detail-meta span{font-size:13px;background:var(--brand-l);color:var(--brand-d);padding:5px 13px;border-radius:999px}
.detail-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.spec-table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px}
.spec-table th,.spec-table td{border:1px solid var(--line);padding:11px 14px}
.spec-table th{background:var(--soft);width:170px;text-align:left;font-weight:700}
.article-head{text-align:center;padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:28px}
.article-head h1{font-size:29px;line-height:1.45;margin-bottom:14px;letter-spacing:-.4px}
.article-meta{color:var(--muted);font-size:13.5px;display:flex;gap:20px;justify-content:center;flex-wrap:wrap}
.article-foot{margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.pager{display:flex;flex-direction:column;gap:10px;font-size:14.5px;color:var(--muted)}
.pager a:hover{color:var(--brand)}
.relate{margin-top:44px;padding-top:30px;border-top:1px solid var(--line)}
.relate h3{font-size:19px;margin-bottom:20px;padding-left:14px;position:relative}
.relate h3::before{content:'';position:absolute;left:0;top:6px;width:4px;height:16px;border-radius:2px;background:var(--brand)}

/* 列表卡（新闻/资料） */
.list{display:flex;flex-direction:column;gap:16px}
.list-item{display:flex;gap:20px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.25s}
.list-item:hover{box-shadow:var(--shadow);border-color:var(--brand-l2);transform:translateY(-2px)}
.list-date{flex:0 0 74px;text-align:center;border-right:1px solid var(--line);padding-right:16px}
.list-date b{display:block;font-size:25px;color:var(--brand);line-height:1.1;letter-spacing:-.5px}
.list-date span{font-size:12.5px;color:var(--muted)}
.list-body{flex:1;min-width:0}
.list-body h3{font-size:17px;margin-bottom:9px;line-height:1.5}
.list-body p{color:var(--muted);font-size:14px}
.list-body .list-tag{display:inline-block;font-size:12px;background:var(--brand-l);color:var(--brand-d);padding:2px 10px;border-radius:999px;margin-bottom:9px}

/* 分页 */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:40px;flex-wrap:wrap}
.pagination a,.pagination span{min-width:40px;height:40px;padding:0 13px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;font-size:14.5px;background:#fff}
.pagination a:hover{border-color:var(--brand);color:var(--brand)}
.pagination .on{background:var(--brand);border-color:var(--brand);color:#fff}
.pagination .dis{color:#c3cedd;background:var(--soft)}

/* 空状态 */
.empty{text-align:center;padding:70px 20px;color:var(--muted)}
.empty svg{width:62px;height:62px;fill:#c9d6e6;margin-bottom:16px}
.empty h3{font-size:17px;color:var(--ink-2);margin-bottom:8px}

/* 搜索页 */
.search-bar{display:flex;gap:12px;margin-bottom:32px}
.search-bar input{flex:1;height:48px;border:1px solid var(--line);border-radius:999px;padding:0 22px;outline:none}
.search-bar input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-l)}

/* 站点地图 */
.smap{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.smap-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.smap-box h3{font-size:17px;margin-bottom:14px;padding-left:13px;position:relative}
.smap-box h3::before{content:'';position:absolute;left:0;top:5px;width:4px;height:15px;border-radius:2px;background:var(--brand)}
.smap-links{display:flex;flex-wrap:wrap;gap:9px}
.smap-links a{font-size:13.5px;padding:5px 12px;border-radius:8px;background:var(--soft);color:var(--ink-2)}
.smap-links a:hover{background:var(--brand);color:#fff}

/* 下载 */
.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.dl-card{display:flex;align-items:center;gap:18px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.25s}
.dl-card:hover{box-shadow:var(--shadow);border-color:var(--brand-l2)}
.dl-ico{flex:0 0 50px;height:50px;border-radius:12px;background:var(--brand-l);color:var(--brand);display:grid;place-items:center;font-weight:800;font-size:12.5px;text-transform:uppercase}
.dl-body{flex:1;min-width:0}
.dl-body h3{font-size:16px;margin-bottom:5px}
.dl-body span{font-size:13px;color:var(--muted)}

/* 设备 */
.eq-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.eq-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.eq-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.eq-card h3{font-size:16px;padding:16px 20px 6px}
.eq-card p{color:var(--muted);font-size:13.5px;padding:0 20px 18px}

/* ---------------- 响应式 ---------------- */
@media (max-width:1180px){
    .quick-grid{grid-template-columns:repeat(4,1fr)}
    .nav>ul>li>a{padding:0 11px;font-size:15px}
    .head-cta{display:none}
    .prod-grid,.app-grid{grid-template-columns:repeat(3,1fr)}
    .partner-grid{grid-template-columns:repeat(4,1fr)}
    .footer-in{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:26px}
    .fcol-qr{display:none}
    .strength-in{grid-template-columns:1fr;gap:36px}
    .cta-in{grid-template-columns:1fr;gap:32px}
}
@media (max-width:980px){
    .quick-grid{grid-template-columns:repeat(3,1fr)}
    :root{--head-h:64px}
    .container{padding:0 18px}
    .logo-txt i{display:none}
    .logo-txt b{font-size:17px}
    .logo img{height:36px}
    .burger{display:flex}
    .nav{
        position:fixed;left:0;right:0;top:calc(var(--head-h) + 38px);bottom:0;background:#fff;
        padding:16px 18px 90px;overflow:auto;transform:translateX(-100%);transition:transform .28s ease;
        box-shadow:var(--shadow-h);z-index:99;
    }
    .nav.on{transform:translateX(0)}
    .nav>ul{flex-direction:column;align-items:stretch;gap:0}
    .nav>ul>li>a{height:auto;line-height:1.5;padding:15px 4px;border-bottom:1px solid var(--line);font-size:16px}
    .nav>ul>li>a.on::after,.nav>ul>li:hover>a::after{display:none}
    .nav>ul>li>a.on{color:var(--brand)}
    .sub{
        position:static;transform:none;opacity:1;visibility:visible;display:none;
        box-shadow:none;border:0;border-radius:0;padding:6px 0 12px 14px;min-width:0;flex-direction:column;gap:14px;
    }
    .nav>ul>li.expand .sub{display:flex}
    .sub-simple{padding:6px 0 12px 14px}
    .sub-title{font-size:15px}
    .sub-links{gap:2px}
    .sub-links a{border-left:0;padding:6px 0}
    .sub-links a::before{content:'· ';color:var(--brand)}
    .search-btn{display:none}
    .search-panel{display:none!important}

    section.hero .hero-slider{height:440px}
    .hero-copy h1{font-size:32px}
    .hero-copy p{font-size:15.5px}
    .hero-tag{margin-bottom:14px}
    .hero-dots{bottom:auto;top:auto;bottom:150px}
    .hero-feat{grid-template-columns:repeat(2,1fr);margin-top:-56px}
    .hero-feat li{padding:18px 18px;border-bottom:1px solid var(--line)}
    .hero-feat .ic{font-size:20px}
    .hero-feat b{font-size:14.5px}
    .hero-feat span{font-size:12.5px}

    .sec{padding:52px 0}
    .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
    .sec-head h2{font-size:25px}
    .sec-head p{font-size:14px}
    .cat-grid{grid-template-columns:1fr}
    .cat-card{flex-direction:column}
    .cat-img{flex:0 0 auto;aspect-ratio:16/9}
    .prod-grid{grid-template-columns:repeat(2,1fr);gap:14px}
    .app-grid{grid-template-columns:repeat(2,1fr);gap:12px}
    .case-grid,.news-grid,.eq-grid{grid-template-columns:1fr}
    .partner-grid{grid-template-columns:repeat(2,1fr)}
    .str-stat b{font-size:30px}
    .cta-copy h2{font-size:23px}
    .cta-tel a{font-size:25px}
    .grid2{grid-template-columns:1fr}
    .footer-in{grid-template-columns:1fr 1fr;gap:24px}
    .fcol-info{grid-column:1/-1}
    .footer{padding-bottom:64px}

    .layout{grid-template-columns:1fr;gap:28px;padding:32px 0 56px}
    .side{position:static}
    .detail-grid{grid-template-columns:1fr;gap:28px}
    .detail-info h1{font-size:22px}
    .article-head h1{font-size:22px}
    .smap{grid-template-columns:1fr}
    .dl-grid{grid-template-columns:1fr}
    .page-hero{padding:42px 0}
    .page-hero h1{font-size:25px}
    .list-date{flex:0 0 60px;padding-right:12px}
    .list-date b{font-size:20px}
    .rich{font-size:15px}
    .rich table{display:block;overflow-x:auto;white-space:nowrap}

    .mbar{display:flex}
    .side-tools{right:12px;bottom:82px;gap:8px}
    .st-item{width:48px;height:48px;font-size:10px;border-radius:12px}
    .st-item .ic{font-size:17px}
    .modal-box{padding:26px 20px}
}
@media (max-width:520px){
    .quick-grid{grid-template-columns:repeat(2,1fr);gap:10px}
    .quick-card{padding:18px 10px 16px}
    .quick-ico{width:44px;height:44px;border-radius:12px}
    .quick-ico .ic{width:22px;height:22px}
    .tb-hide{display:none}
    .hero-copy h1{font-size:26px}
    .hero-copy p{font-size:14.5px}
    .btn{height:42px;padding:0 18px;font-size:14.5px}
    .hero-btns{gap:10px}
    .prod-grid{grid-template-columns:1fr}
    .footer-in{grid-template-columns:1fr}
    .foot-bar-in{justify-content:center;text-align:center;height:auto;padding:14px 0}
}