/* ============================================================
   南京耀冲装饰材料有限公司 · 企业官网
   Design system: 科技蓝 + 藏蓝 · Visual Hierarchy + Motion
   ============================================================ */

:root{
  /* 品牌色 */
  --blue:#3B82F6;
  --blue-600:#2563EB;
  --blue-400:#60A5FA;
  --navy:#0F2744;
  --navy-2:#1A3A5C;
  --ink:#0F172A;
  --ink-2:#334155;
  --ink-3:#64748B;
  --line:#E2E8F0;
  --line-2:#F1F5F9;
  --bg:#FFFFFF;
  --bg-soft:#F8FAFC;
  --bg-deep:#0B1E36;
  --amber:#D97706;
  --green:#059669;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06),0 1px 3px rgba(15,23,42,.08);
  --shadow:0 4px 6px -1px rgba(15,23,42,.08),0 12px 28px -8px rgba(15,23,42,.18);
  --shadow-lg:0 18px 40px -12px rgba(15,23,42,.28);
  --maxw:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink-2);
  background:var(--bg);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}

/* ---------- 布局容器 ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:56px 0}
.section.soft{background:var(--bg-soft)}
.section.deep{background:linear-gradient(160deg,#0B1E36 0%,#16335A 60%,#1E3E66 100%);color:#E2E8F0}
.section-head{max-width:760px;margin:0 auto 32px;text-align:center}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--blue-600);text-transform:uppercase;margin-bottom:14px;
  padding:5px 14px;border-radius:999px;background:rgba(59,130,246,.1);
}
.section-head h2{font-size:32px;line-height:1.3;font-weight:800;color:var(--ink);letter-spacing:-.5px}
.section-head p{margin-top:14px;color:var(--ink-3);font-size:16px}
.deep .section-head h2,.deep .section-head p{color:#fff}
.deep .eyebrow{color:var(--blue-400);background:rgba(96,165,250,.16)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;border-radius:10px;padding:13px 28px;
  cursor:pointer;border:2px solid transparent;transition:all .25s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px -6px rgba(59,130,246,.6)}
.btn-primary:hover{background:var(--blue-600);transform:translateY(-2px);box-shadow:0 14px 28px -8px rgba(59,130,246,.7)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-outline{background:#fff;color:var(--blue-600);border-color:var(--blue)}
.btn-outline:hover{background:var(--blue);color:#fff;transform:translateY(-2px)}
.btn-lg{padding:16px 38px;font-size:16px}

/* ---------- 顶部导航 ---------- */
header.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid transparent;transition:all .3s var(--ease)}
header.nav.scrolled{box-shadow:var(--shadow-sm);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:80px;transition:height .3s var(--ease)}
header.nav.scrolled .nav-inner{height:64px}
@font-face{
  font-family:"Douyin Sans";
  src:url("../fonts/DouyinSansBold-logo.woff2") format("woff2");
  font-weight:700;
  font-style:normal;
  font-display:swap;
  unicode-range:U+5357,U+4EAC,U+8000,U+51B2,U+9694,U+65AD;
}
.logo{display:flex;align-items:center;gap:11px;flex:none;font-weight:800;color:var(--ink);font-size:19px;letter-spacing:-.3px}
.logo>span{line-height:1.25}
.logo .mark{width:38px;height:38px;flex:none}
.logo-name{
  display:block;
  white-space:nowrap;
  font-family:"Douyin Sans","抖音美好体","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-weight:700;
  font-synthesis:none;
  letter-spacing:.02em;
  background:linear-gradient(118deg,#7DD3FC 0%,#3B82F6 42%,#1D4ED8 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  -webkit-text-fill-color:transparent;
}
.logo small{display:block;font-size:11px;font-weight:600;color:var(--ink-3);letter-spacing:.05em;margin-top:1px;-webkit-text-fill-color:var(--ink-3)}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-menu>li{position:relative;flex:none}
.nav-menu>li>a{display:flex;align-items:center;padding:10px 11px;font-size:14.5px;font-weight:600;color:var(--ink-2);border-radius:8px;transition:color .2s,background .2s;white-space:nowrap}
.nav-menu>li>a:hover,.nav-menu>li:hover>a{color:var(--blue-600);background:var(--bg-soft)}
.nav-menu>li>a.active{color:var(--blue-600);background:var(--bg-soft)}
.nav-menu .caret{display:none}
.dropdown{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(8px);
  background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);
  padding:10px;min-width:200px;opacity:0;visibility:hidden;transition:all .22s var(--ease)}
.nav-menu>li:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown a{display:block;padding:9px 14px;border-radius:8px;font-size:14px;color:var(--ink-2);font-weight:500}
.dropdown a:hover{background:var(--bg-soft);color:var(--blue-600)}
.dd-label{display:block;padding:10px 14px 4px;font-size:11px;font-weight:800;letter-spacing:.08em;color:var(--ink-3);text-transform:none}
.dd-label:first-child{padding-top:4px}
/* 悬停桥：防止指针穿过 8px 间隙时下拉消失 */
.dropdown::before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px}
/* 键盘可达：Tab 聚焦即展开下拉 */
.nav-menu>li:focus-within .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nav-menu>li:focus-within>a{color:var(--blue-600);background:var(--bg-soft)}
/* 导航宽度分级收缩，保证不折行 */
@media(max-width:1280px){
  .nav-actions .nav-phone,.nav-cta .phone{display:none}
  .nav-menu{gap:0}
  .nav-menu>li>a{padding:10px 9px;font-size:14px}
}
@media(max-width:1140px){
  .logo{font-size:17px;gap:9px}
  .logo .mark{width:34px;height:34px}
  .nav-menu>li>a{padding:10px 7px;font-size:13.5px}
  .nav-cta{padding:10px 14px;font-size:13.5px}
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:14px}
.nav-cta{display:flex;align-items:center;gap:14px;flex:none}
.nav-cta .phone{font-weight:800;color:var(--blue-600);font-size:15.5px;white-space:nowrap}
.nav-cta .phone:hover{color:var(--blue-700)}
.nav-phone{display:flex;align-items:center;gap:7px;font-weight:800;color:var(--blue-600);font-size:16px}
.nav-phone svg{width:18px;height:18px}
.nav-cta{padding:10px 20px;font-size:14px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s var(--ease)}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:200;background:rgba(15,23,42,.45);opacity:0;visibility:hidden;transition:.3s}
.drawer.open{opacity:1;visibility:visible}
.drawer-panel{position:absolute;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;
  padding:24px;transform:translateX(100%);transition:transform .32s var(--ease);overflow-y:auto}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-panel .close{position:absolute;top:18px;right:18px;font-size:26px;color:var(--ink-3);background:none;border:0;cursor:pointer}
.drawer-panel .nav-phone{margin:18px 0;font-size:20px}
.drawer-menu li{border-bottom:1px solid var(--line-2)}
.drawer-menu li a{padding:14px 4px;display:flex;justify-content:space-between;font-weight:600}
.drawer-menu .sub{padding:0 0 10px 14px}
.drawer-menu .sub a{font-weight:500;color:var(--ink-3);font-size:14px;padding:8px 4px;border:0}

/* ---------- 首屏 Hero ---------- */
.hero{position:relative;min-height:680px;display:flex;align-items:center;
  background:radial-gradient(circle at 78% 20%,rgba(59,130,246,.22),transparent 42%),
            linear-gradient(150deg,#0B1E36 0%,#13315A 55%,#1C406B 100%);
  color:#fff;overflow:hidden;padding:120px 0 70px}
.hero-pattern{position:absolute;inset:0;opacity:.5;pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);padding:7px 16px;border-radius:999px;font-size:14px;font-weight:600;margin-bottom:22px}
.hero-tag .dot{width:8px;height:8px;border-radius:50%;background:#4ade80;box-shadow:0 0 0 4px rgba(74,222,128,.25)}
.hero h1{font-size:46px;line-height:1.22;font-weight:800;letter-spacing:-.6px;margin-bottom:20px}
.hero h1 .hl{color:var(--blue-400)}
.hero-lead{max-width:560px;margin:0 0 32px}
.hero-mats{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.hero-mats span{
  font-size:13px;font-weight:600;color:#E0F2FE;letter-spacing:.01em;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:999px;padding:5px 12px
}
.hero-lead p{font-size:16.5px;line-height:1.75;color:#E2E8F0;margin:0}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.hero-phone{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:18px}
.hero-phone svg{width:20px;height:20px}
.trust-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  border-top:1px solid rgba(255,255,255,.14);padding-top:26px;max-width:620px}
.trust-bar .t-val{font-size:26px;font-weight:800;color:#fff;line-height:1.1}
.trust-bar .t-lab{font-size:13px;color:#94A3B8;margin-top:4px}
/* Hero 视觉卡（隔断示意） */
.hero-visual{position:relative;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:20px;padding:22px;backdrop-filter:blur(6px)}
.hero-visual .vh-title{font-size:13px;letter-spacing:.1em;color:#94A3B8;text-transform:uppercase;margin-bottom:16px}
.partition{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.partition .panel{margin:0;display:flex;flex-direction:column;gap:10px;min-width:0}
.partition .panel-art{
  height:148px;border-radius:12px;position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(165deg,rgba(186,215,255,.3),rgba(37,99,235,.12));
  border:1px solid rgba(255,255,255,.16);
  transition:transform .2s var(--ease),border-color .2s var(--ease)
}
.partition .panel-art-hw{background:linear-gradient(165deg,rgba(148,197,255,.38),rgba(15,39,68,.28))}
.partition .panel-art-ms{background:linear-gradient(165deg,rgba(125,211,252,.22),rgba(37,99,235,.16))}
.partition .panel-art svg{width:88%;height:90%;display:block}
.partition .panel-badge{
  position:absolute;right:8px;bottom:8px;
  font-size:11px;font-weight:800;letter-spacing:.02em;color:#fff;
  background:rgba(37,99,235,.92);border-radius:6px;padding:3px 7px
}
.partition figcaption{
  font-size:12.5px;font-weight:600;color:#E2E8F0;text-align:center;letter-spacing:.02em
}
@media(hover:hover){
  .partition .panel-art:hover{transform:translateY(-3px);border-color:rgba(147,197,253,.55)}
}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:1080px){.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(59,130,246,.4)}
.card .ic{width:52px;height:52px;border-radius:13px;background:linear-gradient(135deg,var(--blue),var(--blue-600));
  display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px}
.card .ic svg{width:26px;height:26px}
.card h3{font-size:18px;color:var(--ink);font-weight:700;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--ink-3)}
.card .price{margin-top:14px;font-weight:800;color:var(--blue-600);font-size:16px}
.card .price small{font-weight:600;color:var(--ink-3);font-size:12.5px}
.card .more{display:inline-flex;align-items:center;gap:5px;margin-top:14px;color:var(--blue-600);font-weight:700;font-size:14px}
.card .more svg{width:15px;height:15px;transition:transform .2s}
.card:hover .more svg{transform:translateX(3px)}

/* 产品卡 */
.product-card .pc-top{height:160px;border-radius:var(--radius-sm);margin-bottom:18px;position:relative;overflow:hidden;
  display:flex;align-items:flex-end;padding:14px}
.product-card .pc-top .corner{position:absolute;top:0;left:0;background:var(--blue);color:#fff;font-size:12px;font-weight:700;padding:5px 12px;border-bottom-right-radius:10px}
.product-card .pc-top .pc-name{color:#fff;font-weight:800;font-size:17px;text-shadow:0 1px 4px rgba(0,0,0,.4);z-index:2}
.product-card h3{font-size:17px;margin-bottom:6px}
.product-card .spec{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}
.product-card .spec span{font-size:12px;background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:3px 9px;color:var(--ink-3)}
/* 产品卡片头部实拍图（第 32 轮）：图片承载 + 文字遮罩 */
.product-card .pc-top{background:#0b1e36}
.product-card .pc-top>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 40%;z-index:0;transition:transform .5s ease}
.product-card:hover .pc-top>img{transform:scale(1.05)}
.product-card .pc-top::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(11,30,54,0) 42%,rgba(11,30,54,.34) 68%,rgba(11,30,54,.78))}
.product-card .pc-top .corner{z-index:3}

/* 案例卡 */
.case-card{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);cursor:pointer}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.case-thumb{height:190px;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#0b1e36}
.case-thumb>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.case-thumb .scene-label{position:absolute;top:14px;left:14px;background:rgba(15,23,42,.7);color:#fff;font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;z-index:3}
.case-thumb .geo-svg{width:70%;opacity:.9}
.case-body{padding:18px 20px}
.case-body h3{font-size:17px;color:var(--ink);font-weight:700;margin-bottom:10px;line-height:1.45}
.case-meta{display:flex;flex-wrap:wrap;gap:8px}
.case-meta span{font-size:12.5px;background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:4px 10px;color:var(--ink-2)}
.case-meta span b{color:var(--blue-600)}

/* 首页产品：四种材质 */
.home-prods{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.home-prods .case-card{text-decoration:none;color:inherit;min-width:0;display:flex;flex-direction:column}
.home-prods .case-body{display:flex;flex-direction:column;flex:1;padding:16px 18px 18px}
.home-prods .case-body h3{font-size:16.5px;margin:0 0 10px}
.home-prods .hp-price{margin-top:auto;padding-top:14px;font-size:18px;font-weight:800;color:var(--blue-600);letter-spacing:-.2px}
.home-prods .hp-price small{display:block;margin-top:2px;font-size:12px;font-weight:600;color:var(--ink-3)}
@media(max-width:1080px){.home-prods{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* 数据条 */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;text-align:center}
.stat-row .num{font-size:40px;font-weight:800;color:var(--blue);letter-spacing:-1px;line-height:1}
.stat-row .lab{margin-top:8px;color:var(--ink-3);font-size:14px}
@media(max-width:680px){.stat-row{grid-template-columns:repeat(2,1fr);gap:22px}}

/* 解决方案 */
.sol-card{position:relative;border-radius:var(--radius);padding:26px;background:#fff;border:1px solid var(--line);overflow:hidden;transition:.3s var(--ease)}
.sol-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--blue);transform:scaleY(0);transform-origin:top;transition:transform .3s var(--ease)}
.sol-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(59,130,246,.4)}
.sol-card:hover::before{transform:scaleY(1)}
.sol-card .ic{width:48px;height:48px;border-radius:12px;background:var(--bg-soft);display:flex;align-items:center;justify-content:center;color:var(--blue-600);margin-bottom:14px}
.sol-card h3{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:8px}
.sol-card p{font-size:14px;color:var(--ink-3);margin-bottom:12px}
.sol-card .link{color:var(--blue-600);font-weight:700;font-size:14px;display:inline-flex;gap:5px;align-items:center}

/* CTA 通栏 */
.cta-band{background:linear-gradient(120deg,var(--navy),var(--navy-2));border-radius:22px;padding:40px 36px;
  display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-40px;top:-40px;width:240px;height:240px;border-radius:50%;background:rgba(59,130,246,.25);filter:blur(20px)}
.cta-band h2{color:#fff;font-size:28px;font-weight:800;margin-bottom:8px;position:relative;z-index:2}
.cta-band p{color:#CBD5E1;font-size:16px;position:relative;z-index:2}
.cta-band .actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}
@media(max-width:760px){.cta-band{grid-template-columns:1fr;padding:40px 26px}}

/* 页脚 */
footer.site{background:var(--bg-deep);color:#CBD5E1;padding:48px 0 24px}
.foot-grid{display:grid;grid-template-columns:1.7fr 1.1fr 1.1fr 1fr 1.1fr 1.35fr;gap:32px}
.foot-grid>.about{padding-right:10px}
footer.site h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
footer.site .about p{font-size:14px;color:#94A3B8;margin-bottom:14px}
footer.site .addr{font-size:13.5px;color:#94A3B8;line-height:1.8}
footer.site .addr b{color:#CBD5E1}
footer.site ul li{margin-bottom:10px}
footer.site ul li a{font-size:14px;color:#94A3B8;transition:color .2s}
footer.site ul li a:hover{color:var(--blue-400)}
.foot-contact .phone{font-size:20px;font-weight:800;color:#fff;margin-bottom:8px}
.foot-contact .qr{width:96px;height:96px;background:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--ink-3);font-size:12px;margin-top:12px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:10px 24px;font-size:13px;color:#64748B}
.foot-bottom .foot-links{display:inline-flex;flex-wrap:wrap;align-items:center;gap:6px 10px}
.foot-bottom .foot-links .sep{opacity:.4}
.foot-bottom .foot-links a{color:#94A3B8;text-decoration:none;transition:color .2s}
.foot-bottom .foot-links a:hover{color:#F8FAFC}
.foot-note{margin-top:12px;font-size:12px;color:#475569;text-align:center}
@media (max-width:768px){.foot-bottom{flex-direction:column;align-items:center;gap:8px;text-align:center}.foot-bottom .foot-links{justify-content:center}}

/* 移动端底部固定栏 */
.mobile-bar{position:fixed;bottom:0;left:0;right:0;z-index:90;display:none;background:#fff;border-top:1px solid var(--line);
  padding:8px 12px;gap:10px;box-shadow:0 -4px 16px rgba(0,0,0,.08)}
.mobile-bar a{flex:1;text-align:center;padding:8px;border-radius:10px;font-weight:700;font-size:14px}
.mobile-bar .call{background:var(--bg-soft);color:var(--ink-2)}
.mobile-bar .quote{background:var(--blue);color:#fff}

/* 滚动揭示动画 */
.js [data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js [data-reveal].in{opacity:1;transform:none}
[data-reveal].d1{transition-delay:.08s}[data-reveal].d2{transition-delay:.16s}
[data-reveal].d3{transition-delay:.24s}[data-reveal].d4{transition-delay:.32s}[data-reveal].d5{transition-delay:.4s}

/* 面包屑：banner 下方细条 */
.crumb{padding:0;background:var(--bg-soft);border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-3)}
.crumb + .section,.crumb + main > .section:first-of-type{padding-top:36px}
.crumb .wrap{display:flex;align-items:center;flex-wrap:nowrap;min-height:44px}
.crumb a{color:var(--ink-3);text-decoration:none;flex:none;transition:color .15s var(--ease)}
.crumb a:hover{color:var(--blue-600)}
.crumb .sep{font-size:0;margin:0 8px;flex:none}
.crumb .sep::before{content:"›";font-size:13px;color:#94A3B8;line-height:1}
.crumb .cur{color:var(--ink);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}

/* 页面头 */
.page-hero{background:linear-gradient(150deg,#0B1E36,#16335A);color:#fff;padding:104px 0 48px;position:relative;overflow:hidden}
.page-hero .eyebrow{color:var(--blue-400);background:rgba(96,165,250,.16)}
.page-hero h1{font-size:38px;font-weight:800;letter-spacing:-.5px;margin:14px 0 12px}
.page-hero p{color:#CBD5E1;font-size:17px;max-width:640px}
.page-hero-pattern{position:absolute;right:-60px;top:-40px;width:360px;height:360px;opacity:.5}

/* 表格 */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:14px;min-width:640px}
table.spec th{background:var(--bg-soft);text-align:left;padding:13px 16px;font-weight:700;color:var(--ink);border-bottom:1px solid var(--line);white-space:nowrap}
table.spec td{padding:12px 16px;border-bottom:1px solid var(--line-2);color:var(--ink-2);vertical-align:top}
table.spec tr:last-child td{border-bottom:0}
table.spec tbody tr:hover{background:#FAFCFF}
table.spec td b{color:var(--blue-600)}

/* 标签页 */
.tabs{display:flex;flex-wrap:wrap;gap:8px;border-bottom:1px solid var(--line);margin-bottom:24px}
.tabs button{border:0;background:none;padding:12px 18px;font-size:15px;font-weight:600;color:var(--ink-3);cursor:pointer;border-bottom:2px solid transparent;transition:.2s}
.tabs button.active{color:var(--blue-600);border-bottom-color:var(--blue)}
.tab-panel{display:none;animation:fade .4s var(--ease)}
.tab-panel.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* FAQ */
.faq-item{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;background:#fff;overflow:hidden;transition:border-color .2s}
.faq-item.open{border-color:var(--blue)}
.faq-q{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:18px 22px;cursor:pointer;font-weight:700;color:var(--ink);font-size:16px}
.faq-q .pm{width:26px;height:26px;flex:none;border-radius:50%;background:var(--bg-soft);display:flex;align-items:center;justify-content:center;color:var(--blue-600);font-size:18px;transition:transform .3s var(--ease)}
.faq-item.open .pm{transform:rotate(45deg);background:var(--blue);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
.faq-a-inner{padding:0 22px 20px;color:var(--ink-3);font-size:14.5px}
.faq-a-inner ul{margin:8px 0 0 18px;list-style:disc}
.faq-a-inner li{margin-bottom:6px}

/* 表单 */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-2)}
.field input,.field select,.field textarea{font-family:inherit;font-size:14.5px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);transition:border-color .2s,box-shadow .2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(59,130,246,.15)}
.field textarea{resize:vertical;min-height:110px}
.form-done{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:22px 22px 20px;margin-bottom:18px}
.form-done b{display:block;font-size:17px;color:var(--ink);margin-bottom:8px}
.form-done p{color:var(--ink-2);font-size:14.5px;line-height:1.75;margin:0 0 16px}
.form-done a.btn{display:inline-flex}
@media(max-width:600px){.form-grid{grid-template-columns:1fr}}

/* 信息卡（关于/能力） */
.info-card{display:flex;gap:18px;align-items:flex-start;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.info-card .ic{flex:none;width:46px;height:46px;border-radius:12px;background:var(--bg-soft);color:var(--blue-600);display:flex;align-items:center;justify-content:center}
.info-card h3{font-size:16px;color:var(--ink);font-weight:700;margin-bottom:5px}
.info-card p{font-size:14px;color:var(--ink-3)}

/* 地图占位 */
.map-card{height:340px;border-radius:var(--radius);border:1px solid var(--line);overflow:hidden;position:relative;
  background:linear-gradient(135deg,#eef2f7,#dde6f0)}
.map-card .pin{position:absolute;left:50%;top:46%;transform:translate(-50%,-100%);text-align:center}
.map-card .pin .dot{width:20px;height:20px;border-radius:50% 50% 50% 0;background:var(--blue);transform:rotate(-45deg);margin:0 auto;box-shadow:0 0 0 8px rgba(59,130,246,.18)}
.map-card .pin .tip{margin-top:14px;background:#fff;padding:8px 14px;border-radius:8px;font-size:13px;font-weight:700;color:var(--ink);box-shadow:var(--shadow-sm);white-space:nowrap}
.map-card .roads{position:absolute;inset:0;opacity:.5}
.map-card .badge{position:absolute;bottom:14px;left:14px;background:rgba(255,255,255,.9);padding:8px 14px;border-radius:8px;font-size:12.5px;color:var(--ink-2);box-shadow:var(--shadow-sm)}

/* 提示框 */
.note{background:var(--bg-soft);border-left:4px solid var(--blue);border-radius:8px;padding:14px 18px;font-size:14px;color:var(--ink-2);margin:18px 0}
.note.warn{border-left-color:var(--amber);background:#FFFBEB}
.note b{color:var(--ink)}

/* 标签筛选 */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:22px;scroll-margin-top:88px}
.filter-bar button{border:1px solid var(--line);background:#fff;padding:9px 20px;border-radius:999px;font-weight:600;font-size:14px;color:var(--ink-2);cursor:pointer;transition:.2s}
.filter-bar button.active{background:var(--blue);color:#fff;border-color:var(--blue)}

/* 404 / 通用 */
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.pill{background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:13px;color:var(--ink-2)}

/* 响应式导航 */
@media(max-width:980px){
  .nav-menu,.nav-actions .nav-phone{display:none}
  .burger{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-visual{max-width:420px}
  .hero h1{font-size:38px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .mobile-bar{display:flex}
  body{padding-bottom:64px}
}
@media(max-width:560px){
  .section{padding:40px 0}
  .page-hero{padding:92px 0 36px}
  .crumb .wrap{min-height:40px}
  .section-head h2{font-size:26px}
  .hero h1{font-size:31px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .hero-mats{gap:6px}
  .hero-mats span{padding:4px 10px;font-size:12px}
  .partition{gap:8px}
  .partition .panel-art{height:120px}
  .partition figcaption{font-size:11px;letter-spacing:0}
  .trust-bar{grid-template-columns:repeat(2,1fr);gap:14px}
  .foot-grid{grid-template-columns:1fr}
  .cta-band h2{font-size:23px}
}

/* ============================================================
   AI 可读语义块增强（产品 / 工程案例 / 解决方案）
   目标：语义化 article + 参数网格 + 分块标题，
   便于豆包 / DeepSeek 等大模型结构化抽取与引用。
   ============================================================ */

/* 产品详情语义块 */
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;margin-bottom:26px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(59,130,246,.4)}
.product-card .pc-head{display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;margin-bottom:4px}
.product-card h2{font-size:24px;color:var(--ink);font-weight:800;line-height:1.3}
.product-card .pc-sub{color:var(--ink-3);margin-top:6px;font-size:15px}
.product-card .price{font-size:20px;color:var(--blue-600);font-weight:800;text-align:right;white-space:nowrap}
.product-card .price small{display:block;font-size:12.5px;color:var(--ink-3);font-weight:600}
.product-card .pc-block{margin-top:20px}
.product-card .pc-block h3{font-size:16px;color:var(--ink);font-weight:700;margin-bottom:10px;padding-left:11px;border-left:3px solid var(--blue)}
.product-card .pc-block ul{margin:0 0 0 14px;list-style:disc;color:var(--ink-2);font-size:14.5px}
.product-card .pc-block ul li{margin-bottom:7px}
.product-card .pc-block p{color:var(--ink-2);font-size:14.5px}

/* 关键参数网格 */
.meta-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:16px 0}
.meta-grid .mi{background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.meta-grid .mi .k{font-size:12.5px;color:var(--ink-3)}
.meta-grid .mi .v{font-size:15px;color:var(--ink);font-weight:700;margin-top:3px}
@media(max-width:680px){.meta-grid{grid-template-columns:repeat(2,1fr)}}

/* 工程案例完整叙事 */
.case-article{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:28px;margin-bottom:24px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.case-article:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(59,130,246,.4)}
.case-article .ca-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;margin-bottom:12px}
.case-article .scene-tag{display:inline-block;background:var(--blue);color:#fff;font-size:12px;font-weight:700;padding:5px 14px;border-radius:999px;margin-bottom:10px}
.case-article h3{font-size:20px;color:var(--ink);font-weight:800;line-height:1.35}
.case-article .overview{color:var(--ink-2);font-size:14.5px;margin-bottom:8px}
.case-article .ca-block{margin-top:14px}
.case-article .ca-block h4{font-size:15px;color:var(--blue-600);font-weight:700;margin-bottom:6px;display:flex;align-items:center;gap:7px}
.case-article .ca-block h4::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--blue)}
.case-article .ca-block p{font-size:14px;color:var(--ink-2)}

/* 解决方案完整块 */
.solution-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;margin-bottom:26px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.solution-block:hover{box-shadow:var(--shadow);border-color:rgba(59,130,246,.4)}
.solution-block .sb-head{display:flex;gap:16px;align-items:center;margin-bottom:14px}
.solution-block .sb-head .ic{width:50px;height:50px;flex:none;border-radius:13px;background:var(--bg-soft);color:var(--blue-600);
  display:flex;align-items:center;justify-content:center}
.solution-block .sb-head .ic svg{width:26px;height:26px}
.solution-block h3{font-size:21px;color:var(--ink);font-weight:800}
.solution-block .sb-sub{color:var(--ink-3);font-size:14.5px;margin-top:3px}
.solution-block .sb-block{margin-top:18px}
.solution-block .sb-block h4{font-size:15px;color:var(--blue-600);font-weight:700;margin-bottom:9px;padding-left:11px;border-left:3px solid var(--blue)}
.solution-block .sb-block p{font-size:14.5px;color:var(--ink-2);margin-bottom:8px}
.solution-block .sb-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:10px}
.solution-block .sb-step{background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:13px 14px}
.solution-block .sb-step b{display:block;color:var(--ink);font-size:14.5px;margin-bottom:3px}
.solution-block .sb-step span{font-size:13px;color:var(--ink-3)}
@media(max-width:900px){.solution-block .sb-steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.solution-block .sb-steps{grid-template-columns:1fr}}

/* ===== 详情页 / 资讯扩展 ===== */
.detail-meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:13px;color:var(--ink-3);margin-top:12px}
.detail-meta span{display:inline-flex;align-items:center;gap:6px}
.pub-info{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:20px 22px;margin:24px 0}
.pub-info .pi .k{font-size:12.5px;color:var(--ink-3);margin-bottom:4px}
.pub-info .pi .v{font-size:14.5px;color:var(--ink);font-weight:600;line-height:1.5}
.pub-info .pi .v b{color:var(--blue-600)}
@media(max-width:900px){.pub-info{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.pub-info{grid-template-columns:1fr}}
.article-block{margin:28px 0}
.article-block h2{font-size:21px;line-height:1.4;color:var(--ink);margin:0 0 12px;padding-left:12px;border-left:4px solid var(--blue);letter-spacing:-.2px}
.article-block h3{font-size:16.5px;color:var(--ink);margin:18px 0 8px}
.article-block p{color:var(--ink-2);font-size:15px;line-height:1.9;margin:0 0 12px}
.article-block ul{margin:0 0 12px 20px;list-style:disc;color:var(--ink-2);font-size:15px;line-height:1.9}
.article-block li{margin-bottom:6px}
.article-block b{color:var(--ink)}
.fig{background:linear-gradient(135deg,#EFF6FF 0%,#DBEAFE 60%,#BFDBFE 100%);border:1px solid var(--line);border-radius:12px;min-height:210px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;margin:18px 0}
.fig svg{width:54px;height:54px;opacity:.55}
.fig .cap{font-size:13px;color:var(--ink-3);padding:0 16px 14px;text-align:center}
.fig .cap b{color:var(--ink-2)}
.fig-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:18px 0}
.fig-grid .fig{margin:0;min-height:170px}
.fig-grid .fig svg{width:40px;height:40px}
@media(max-width:860px){.fig-grid{grid-template-columns:1fr}}
.case-group{margin:0}
.case-group[hidden]{display:none}
.case-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.case-list .case-group,.case-list .case-cards{display:contents}
.cg-head{display:none}
.pager{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;margin:28px 0 8px}
.pager[hidden]{display:none}
.pager button{min-width:40px;height:40px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-2);font-size:14px;font-weight:600;cursor:pointer;transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease)}
.pager button:hover:not(:disabled){border-color:var(--blue);color:var(--blue-600)}
.pager button.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.pager button:disabled{opacity:.4;cursor:default}
@media(max-width:1080px){.case-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.case-list{grid-template-columns:1fr}}
.cg-head h3{font-size:19px;margin:0;display:flex;align-items:center;gap:10px}
.cg-links{margin-left:auto;display:flex;gap:16px;flex-wrap:wrap}
.cg-links a{font-size:13.5px;font-weight:700;color:var(--blue)}
.case-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.case-cards .case-card{padding:0;gap:0;text-decoration:none;color:inherit;min-width:0}
.case-cards .case-body h3{font-size:16.5px;margin:0 0 10px}
.cc-overview{font-size:14px;color:var(--ink-3);margin:0;line-height:1.75}
.cc-meta{display:flex;flex-wrap:wrap;gap:8px}
.cc-meta span{font-size:12.5px;background:#F1F5F9;border:1px solid var(--line);border-radius:999px;padding:3px 11px;color:var(--ink-2)}
.cc-link{margin-top:auto;font-size:14px;font-weight:700;color:var(--blue)}
@media(max-width:1080px){.case-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.case-cards{grid-template-columns:1fr}}
@media(max-width:860px){.cg-links{margin-left:0}}
.cj-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.cj-card{margin:0;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;min-width:0;text-decoration:none;color:inherit;transition:transform .2s,box-shadow .2s}
a.cj-card:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(15,39,68,.10)}
.cj-card img{width:100%;height:188px;object-fit:cover;display:block}
.cj-card .cj-body{padding:14px 16px 16px}
.cj-card h3{font-size:16.5px;margin:0 0 6px;color:var(--ink);font-weight:700}
.cj-card p{font-size:13px;color:var(--ink-3);margin:0;line-height:1.6}
.cj-badge{display:inline-block;font-size:11px;font-weight:700;color:var(--blue-600);background:rgba(59,130,246,.1);border-radius:999px;padding:3px 8px;margin-bottom:8px}
@media(max-width:1080px){.cj-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.cj-grid{grid-template-columns:1fr}}
.case-links{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:10px}
.case-links a{display:flex;align-items:center;gap:14px;background:#F8FAFC;border:1px solid var(--line);border-radius:10px;padding:12px 16px;transition:border-color .2s,box-shadow .2s}
.case-links a:hover{border-color:var(--blue);box-shadow:0 6px 18px rgba(59,130,246,.12)}
.case-links .t{font-weight:700;color:var(--ink);font-size:14.5px}
.case-links .m{color:var(--ink-3);font-size:13px}
.case-links .go{margin-left:auto;flex-shrink:0;font-size:13px;font-weight:700;color:var(--blue)}
@media(max-width:640px){.case-links a{flex-wrap:wrap}.case-links .go{margin-left:0}}
.vid{position:relative;background:linear-gradient(135deg,#0F2744 0%,#1A3A5C 100%);border-radius:12px;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;margin:18px 0;overflow:hidden}
.vid .play{width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.14);border:2px solid rgba(255,255,255,.45);display:flex;align-items:center;justify-content:center}
.vid .play::after{content:"";border-style:solid;border-width:11px 0 11px 19px;border-color:transparent transparent transparent #fff;margin-left:4px}
.vid .cap{font-size:13px;color:#BFDBFE;padding:0 16px 16px;text-align:center}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:860px){.news-grid{grid-template-columns:1fr}}
.news-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:transform .25s var(--ease),box-shadow .25s var(--ease);display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-4px);box-shadow:0 16px 32px -14px rgba(15,39,68,.22)}
.news-card .cover{height:150px;flex:none;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.85)}
.news-card .cover.c1{background:linear-gradient(135deg,#3B82F6,#1D4ED8)}
.news-card .cover.c2{background:linear-gradient(135deg,#0EA5E9,#0369A1)}
.news-card .cover.c3{background:linear-gradient(135deg,#10B981,#047857)}
.news-card .cover.c4{background:linear-gradient(135deg,#F59E0B,#B45309)}
.news-card .cover svg{width:44px;height:44px}
.news-card .nc-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:9px;flex:1}
.news-card .nc-date{font-size:12.5px;color:var(--ink-3)}
.news-card h3{font-size:16.5px;line-height:1.5;margin:0}
.news-card h3 a{color:var(--ink)}
.news-card h3 a:hover{color:var(--blue-600)}
.news-card p{font-size:13.5px;color:var(--ink-3);line-height:1.7;margin:0;flex:1}
.news-card .more{font-size:13.5px}
.more{color:var(--blue-600);font-weight:700;font-size:14px}

/* 资讯列表：一行一条 */
.news-list{display:flex;flex-direction:column}
.news-list .news-card{flex-direction:row;align-items:stretch;gap:20px;padding:22px 0;background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none;text-align:left}
.news-list .news-card:hover{transform:none;box-shadow:none}
.news-list .news-card:first-child{padding-top:4px}
.news-list .news-card .cover{width:196px;height:128px;min-height:0;flex:none;position:relative;overflow:hidden;border-radius:10px}
.news-list .news-card .cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.news-list .news-card .nc-body{padding:2px 0 0;justify-content:center;gap:7px}
.news-list .news-card h3{font-size:18px;line-height:1.45}
.news-list .nc-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-3)}
.news-list .nc-cat{color:var(--blue-600);font-weight:700}
.news-list .news-card p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
#newsFilter{flex-direction:column;align-items:flex-start;gap:10px;margin:6px 0 18px}
#newsFilter .fb-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.fb-label{padding:0 8px 0 4px;font-size:12px;font-weight:700;color:var(--ink-3)}
.news-empty{color:var(--ink-3);padding:30px 0;text-align:center;font-size:14px}
@media(max-width:640px){
  .news-list .news-card{flex-direction:column;gap:12px;padding:18px 0}
  .news-list .news-card .cover{width:100%;height:180px}
}
.more:hover{text-decoration:underline}
.next-links{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:30px 0 6px}
@media(max-width:860px){.next-links{grid-template-columns:1fr}}
.next-links a{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:14px 16px;font-size:14px;color:var(--ink-2);line-height:1.6}
.next-links a b{display:block;color:var(--ink);font-size:14.5px;margin-bottom:3px}
.next-links a:hover{border-color:var(--blue);color:var(--blue-600)}

/* ===== 体验增强：返回顶部 / 焦点可见性 ===== */
.to-top{position:fixed;right:22px;bottom:86px;z-index:90;width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);cursor:pointer;
  display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;
  transform:translateY(10px);transition:.3s var(--ease)}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--blue);color:var(--blue-600);transform:translateY(-3px)}
.to-top svg{width:20px;height:20px}
@media(max-width:560px){.to-top{right:14px;bottom:78px;width:42px;height:42px}}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--blue);outline-offset:2px;border-radius:6px}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  [data-reveal]{opacity:1 !important;transform:none !important;transition:none !important}
  .partition .panel-art,.partition .panel-art:hover{transition:none;transform:none}
}

/* 正文内链：交互可辨识 + 悬停反馈 */
.article-block a{color:var(--blue-600);font-weight:600;text-decoration:none;border-bottom:1px solid var(--blue);transition:.2s}
.article-block a:hover{color:var(--navy);border-bottom-color:var(--navy)}

/* ===== 产品详情图：主图 + 缩略图条（对标 B2B 详情画廊） ===== */
.gallery{margin:20px 0}
.gallery-main{position:relative;min-height:300px;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:30px 20px 26px;
  background:linear-gradient(135deg,#EFF6FF 0%,#DBEAFE 55%,#BFDBFE 100%)}
.gallery-main .gchip{position:absolute;top:14px;left:14px;background:rgba(15,39,68,.6);color:#fff;font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;letter-spacing:.02em}
.gallery-main svg{width:62px;height:62px;opacity:.5;color:var(--navy)}
.gallery-main .cap{font-size:13.5px;color:var(--ink-3);text-align:center;padding:0 18px}
.gallery-main .cap b{color:var(--ink-2)}
.thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:10px}
.thumb{position:relative;min-height:78px;border:1px solid var(--line);border-radius:11px;overflow:hidden;
  display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#F1F5F9 0%,#DBEAFE 100%)}
.thumb .tchip{position:absolute;top:6px;left:6px;font-size:10.5px;font-weight:600;background:rgba(15,39,68,.5);color:#fff;padding:2px 7px;border-radius:999px}
.thumb svg{width:30px;height:30px;opacity:.4;color:var(--navy)}
.thumb.active{border-color:var(--blue);box-shadow:0 0 0 2px rgba(59,130,246,.18)}
@media(max-width:560px){.thumbs{grid-template-columns:repeat(2,1fr)}}

/* ===== 新闻详情：导语摘要 + H3 子结构 + FAQ ===== */
.lead{background:linear-gradient(135deg,#EFF6FF 0%,#DBEAFE 100%);border:1px solid #BFDBFE;border-left:4px solid var(--blue);
  border-radius:12px;padding:18px 20px;margin:18px 0 8px;font-size:15px;line-height:1.85;color:var(--ink)}
.lead b{color:var(--navy)}
.article-block h3{font-size:16.5px;color:var(--ink);margin:22px 0 10px;padding-left:11px;border-left:3px solid var(--blue)}
.faq-mini{margin:26px 0 6px;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.faq-mini .fm-item{border-bottom:1px solid var(--line)}
.faq-mini .fm-item:last-child{border-bottom:0}
.faq-mini .fm-q{padding:14px 18px;font-weight:700;color:var(--ink);cursor:pointer;display:flex;gap:10px;align-items:flex-start}
.faq-mini .fm-q .q{color:var(--blue-600);font-weight:800;flex:none}
.faq-mini .fm-a{padding:0 18px 16px 42px;color:var(--ink-2);font-size:14.5px;line-height:1.85}

/* ===== 选型指南：横向对比表 + 场景卡片内链 + 步骤列表 ===== */
.cmp-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:22px 0 14px;border:1px solid var(--line);border-radius:14px}
.cmp-table{width:100%;border-collapse:collapse;min-width:720px;font-size:14px}
.cmp-table thead th{background:var(--navy);color:#fff;font-weight:700;padding:13px 14px;text-align:left;white-space:nowrap}
.cmp-table tbody th{background:var(--bg-soft);color:var(--ink);font-weight:700;padding:12px 14px;text-align:left;white-space:nowrap;width:150px;border-bottom:1px solid var(--line)}
.cmp-table tbody td{padding:12px 14px;color:var(--ink-2);border-bottom:1px solid var(--line);border-left:1px solid var(--line);vertical-align:top}
.cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:0}
.mini{margin:8px 0 0;font-size:13.5px}
.mini a{color:var(--blue-600);font-weight:600;text-decoration:none;border-bottom:1px solid var(--blue);margin-right:6px}
.mini a:hover{color:var(--navy);border-bottom-color:var(--navy)}
.steps{margin:22px 0 8px;padding-left:0;list-style:none;counter-reset:s}
.steps li{position:relative;padding:14px 18px 14px 46px;margin-bottom:10px;background:var(--bg-soft);border:1px solid var(--line);
  border-radius:12px;color:var(--ink-2);font-size:15px;line-height:1.8;counter-increment:s}
.steps li::before{content:counter(s);position:absolute;left:14px;top:15px;width:22px;height:22px;border-radius:50%;background:var(--blue);
  color:#fff;font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center}
.steps li b{color:var(--ink)}
.proc-grid .info-card{flex-direction:column;gap:0;padding:0;overflow:hidden}
.proc-grid .info-card img{display:block;width:100%;height:186px;object-fit:cover;object-position:center 38%}
.proc-grid .info-card>div{padding:14px 16px 16px}
.proc-grid .info-card h3{margin-bottom:4px}
.samp-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:18px}
.samp-grid .fig{margin:0;min-height:0;justify-content:flex-start}
.samp-grid .fig>img{height:248px;object-fit:contain;object-position:center;background:#F1F5F9}
@media(max-width:900px){.samp-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.samp-grid{grid-template-columns:1fr}.samp-grid .fig>img{height:280px}}
.shop-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:18px}
.shop-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.shop-grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.shop-grid .fig{margin:0;min-height:0;justify-content:flex-start}
.shop-grid .fig>img{height:186px;object-position:center 38%}
.shop-grid-2 .fig>img{height:220px;object-position:center 42%}
@media(max-width:900px){.shop-grid,.shop-grid-3,.shop-grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.shop-grid,.shop-grid-3,.shop-grid-2{grid-template-columns:1fr}.proc-grid .info-card img{height:180px}}
@media(max-width:640px){.cmp-table{font-size:13px}.cmp-table tbody th{width:120px}}

/* ===== 资讯站（博客）样式：H1/H2/H3 层级 + 侧栏 + 标签云 ===== */
.blog-layout{display:grid;grid-template-columns:1fr 300px;gap:28px;align-items:start}
.blog-main{min-width:0}
.blog-side{position:sticky;top:96px;display:grid;gap:16px}
@media(max-width:960px){.blog-layout{grid-template-columns:1fr}.blog-side{position:static}}
.post-meta{display:flex;flex-wrap:wrap;gap:9px;align-items:center;font-size:13px;color:var(--ink-3);margin:16px 0 14px}
.post-meta .chip{background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;padding:4px 12px}
.news-tags{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 16px}
.news-tags a{font-size:12.5px;padding:5px 12px;border-radius:999px;border:1px solid var(--line);color:var(--ink-2);background:var(--bg-soft);text-decoration:none;transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease)}
.news-tags a:hover{border-color:var(--blue);color:var(--blue-600);background:#EFF6FF}
.article-wrap h2,.article-wrap h3,.post h2,.post h3{scroll-margin-top:96px}
.toc-card{padding-bottom:12px}
.toc{display:flex;flex-direction:column;margin:0;padding:0}
.toc a{display:block;padding:8px 6px 8px 12px;border-left:2px solid var(--line);font-size:13.5px;line-height:1.45;color:var(--ink-2);text-decoration:none;transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease)}
.toc a:hover{color:var(--blue-600);border-left-color:var(--blue-400);background:var(--bg-soft)}
.toc a.is-active{color:var(--blue-600);border-left-color:var(--blue);font-weight:700;background:#EFF6FF}
.toc a.toc-sub{padding-left:22px;font-size:12.5px;color:var(--ink-3)}
.post{font-size:15.5px;line-height:1.95;color:var(--ink-2)}
.post h2{font-size:22px;color:var(--ink);margin:34px 0 14px;padding-left:12px;border-left:4px solid var(--blue);line-height:1.5}
.post h3{font-size:18px;color:var(--navy);margin:24px 0 10px;font-weight:700}
.post h3::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--blue);margin-right:8px;vertical-align:middle}
.post p{margin:0 0 14px}
.post ol,.post ul{margin:0 0 16px 22px}
.post li{margin-bottom:7px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.tag-cloud a{font-size:13px;padding:6px 12px;border:1px solid var(--line);border-radius:999px;color:var(--ink-2);background:#fff;text-decoration:none;transition:.2s}
.tag-cloud a:hover{border-color:var(--blue);color:var(--blue-600);background:var(--bg-soft)}
.cat-block{margin-bottom:32px}
.cat-block h3{font-size:18px;color:var(--ink);margin:0 0 12px;padding-left:11px;border-left:3px solid var(--blue)}
.cat-list{list-style:none;padding:0;margin:0}
.cat-list li{padding:10px 0;border-bottom:1px dashed var(--line)}
.cat-list li:last-child{border-bottom:0}
.cat-list a{color:var(--ink);font-weight:600;text-decoration:none}
.cat-list a:hover{color:var(--blue-600)}
.cat-list .d{font-size:13px;color:var(--ink-3);margin-left:8px;font-weight:400}
.side-card{border:1px solid var(--line);border-radius:14px;padding:18px;background:#fff}
.side-card h4{font-size:15px;color:var(--ink);margin:0 0 12px}
.rel-list{list-style:none;padding:0;margin:0}
.rel-list li{padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}
.rel-list li:last-child{border-bottom:0}
.rel-list a{color:var(--ink-2);text-decoration:none}
.rel-list a:hover{color:var(--blue-600)}

/* ============================================================
   可访问性 / 视觉一致性增强
   ============================================================ */

/* 1. 跳转链接：视觉隐藏，键盘聚焦时显现（跳过全站导航） */
.skip-link{position:absolute;left:20px;top:-70px;z-index:300;background:var(--blue-600);color:#fff;
  padding:11px 20px;border-radius:0 0 12px 12px;font-size:14px;font-weight:600;text-decoration:none;
  box-shadow:var(--shadow-sm);transition:top .2s var(--ease)}
.skip-link:focus,.skip-link:focus-visible{top:0;outline:2px solid var(--navy);outline-offset:2px}

/* 2. 锚点偏移：header 固定定位，深链跳转时不被顶栏遮挡 */
[id]{scroll-margin-top:100px}
@media(max-width:860px){[id]{scroll-margin-top:84px}}

/* 3. skip-link 跳转后主内容不显示突兀焦点框 */
#main:focus,#main:focus-visible{outline:none}

/* 4. 表格：窄屏横向滚动 + 首列吸附，不撑破布局 */
@media(max-width:760px){
  .cmp-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .cmp-table tbody th,.cmp-table thead th:first-child{position:sticky;left:0;background:#fff;z-index:1}
}

/* 5. 触控目标：移动端可点区域不小于 44px */
@media(max-width:640px){
  .btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center}
  .tag-cloud a{min-height:38px;display:inline-flex;align-items:center}
}

/* 6. 阅读行宽：长文本每行控制在 72 字符内，减少跳行疲劳 */
.article-block p,.post p,.faq-a-inner{max-width:74ch}

/* 7. 媒体元素不溢出 */
img,svg,video{max-width:100%;height:auto}

/* 8. 图片位说明文字：统一可辨识度 */
.fig .cap{font-size:13px;line-height:1.7}

/* 9. 尊重系统降低动效设置 */
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}

/* 10. 高对比度模式适配 */
@media(prefers-contrast:more){
  :root{--ink-3:#475569;--line:#94A3B8}
  .btn{border-width:2px}
}

/* ===== 服务信息栏目（列表页 + 服务信息详情页） ===== */

/* 服务信息卡 */
.svc-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  padding:22px 24px;margin:0 0 26px;box-shadow:var(--shadow-sm)}
.svc-card-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:16px;
  padding-bottom:14px;border-bottom:1px dashed var(--line)}
.svc-badge{background:var(--blue);color:#fff;font-size:12px;font-weight:700;
  padding:5px 13px;border-radius:999px;letter-spacing:.02em}
.svc-date{font-size:13px;color:var(--ink-3)}
.svc-meta{margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 26px}
.svc-meta>div{min-width:0}
.svc-meta dt{font-size:12.5px;color:var(--ink-3);font-weight:600;letter-spacing:.04em;margin-bottom:3px}
.svc-meta dd{margin:0;font-size:14.5px;color:var(--ink);line-height:1.65;word-break:break-word}
.svc-meta .svc-tel,.svc-tel{color:var(--blue-600);font-weight:700;text-decoration:none}
.svc-meta .svc-tel:hover,.svc-tel:hover{text-decoration:underline}
.svc-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
@media(max-width:700px){.svc-meta{grid-template-columns:1fr}.svc-card{padding:18px}}

/* 列表页条目 */
.svc-list{position:relative;scroll-margin-top:96px}
.svc-hash{position:absolute;top:0;left:0;width:0;height:0}
#svcTabs{justify-content:flex-start;margin:0 0 18px}
#svc-list .cat-block{margin-bottom:0}
.svc-ul{list-style:none;padding:0;margin:0}
.svc-item{padding:16px 0;border-bottom:1px dashed var(--line)}
.svc-item:last-child{border-bottom:0}
.svc-t{display:block;font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.5;
  text-decoration:none;transition:.2s}
.svc-t:hover{color:var(--blue-600)}
.svc-d{margin:7px 0 9px;font-size:14px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.svc-tag{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.svc-tag .sc{font-size:12px;font-weight:700;color:var(--blue-600);background:var(--bg-soft);
  border:1px solid var(--line);border-radius:6px;padding:3px 9px}
.svc-tag .sd{font-size:12.5px;color:var(--ink-3)}

/* 11. 打印：隐藏导航与转化组件，保留正文与链接出处 */
@media print{
  header.nav,.mobile-bar,.to-top,.drawer,.skip-link,.cta-band,.blog-side,.foot-legal,.foot-bottom .foot-links{display:none !important}
  body{padding-bottom:0;color:#000;background:#fff}
  .section{padding:14px 0;page-break-inside:avoid}
  .footer{border-top:1px solid #ccc}
  a{text-decoration:underline;color:#000}
  a[href^="http"]::after{content:" [" attr(href) "]";font-size:10px;color:#555;font-weight:400}
  [data-reveal]{opacity:1 !important;transform:none !important}
}

/* ===== 注入图片显示规则（第 21 轮：原创 AI 图，零侵权） ===== */
.hero.ph-hero,.page-hero.ph-hero{background-size:cover;background-position:center;background-repeat:no-repeat}
.thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.thumb .tchip{z-index:2}
.news-card .cover img{display:block;width:100%;height:100%;object-fit:cover}
.gallery-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.gallery-main .cap{position:relative;z-index:2}
.gallery-main .gchip{z-index:2}

/* nav dropdown: 场景条目下的人群副标签 */
.dropdown a .dd-sub{display:block;font-size:12px;font-weight:400;color:var(--ink-3);margin-top:2px;line-height:1.45}
.dropdown a:hover .dd-sub{color:var(--blue-600)}

/* news.html: 场景板块内的人群关注点行 */
.aud-rows{margin-top:14px;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--bg-soft)}
.aud-rows .aud-cap{padding:8px 12px;font-size:11px;font-weight:800;letter-spacing:.08em;color:var(--ink-3);border-bottom:1px solid var(--line);background:var(--card,#fff)}
.aud-row{display:flex;align-items:center;gap:10px;padding:9px 12px;font-size:13.5px;border-top:1px dashed var(--line);background:var(--card,#fff)}
.aud-row:first-of-type{border-top:0}
.aud-tag{flex:none;font-size:12px;font-weight:700;color:var(--blue-600);background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:2px 8px;white-space:nowrap}
.aud-txt{color:var(--ink-2);flex:1;min-width:0}
.aud-row a{flex:none;font-size:13px;color:var(--blue-600);text-decoration:none;font-weight:600;white-space:nowrap}
.aud-row a:hover{text-decoration:underline}
@media (max-width:640px){.aud-row{flex-wrap:wrap;row-gap:4px}.aud-txt{flex:1 1 calc(100% - 80px)}}

/* .fig 实拍图：替换原 SVG 占位后的展示规则 */
.fig{overflow:hidden}
.fig>img{display:block;width:100%;height:230px;object-fit:cover;align-self:stretch}
.fig-grid .fig>img{height:170px}
@media (max-width:640px){.fig>img,.fig-grid .fig>img{height:190px}}

/* 服务保障信任条（trust-strip，勿与 hero 的 .trust-bar 统计条混用） */
.sec-strip{padding:4px 0 28px}
.trust-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:0 0 26px;padding:18px;background:var(--bg-soft);border:1px solid var(--line);border-radius:12px}
.trust-strip .ts-item{display:flex;align-items:flex-start;gap:10px}
.trust-strip .ts-item svg{width:20px;height:20px;flex:none;color:var(--blue-600);margin-top:2px}
.trust-strip .ts-item b{display:block;font-size:14.5px;color:var(--ink)}
.trust-strip .ts-item span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:2px}
@media (max-width:860px){.trust-strip{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.trust-strip{grid-template-columns:1fr}}

/* ---- 页脚重排：6 板块网格 + 三级响应式（修复 4 列网格装 6 板块的错位） ---- */
.foot-bottom{align-items:center}
@media (max-width:1120px){
  .foot-grid{grid-template-columns:repeat(3,1fr);gap:28px}
  .foot-grid>.about{grid-column:1/-1;padding-right:0}
  .foot-grid>.foot-contact{grid-column:span 2}
}
@media (max-width:980px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:24px}
  .foot-grid>.about,.foot-grid>.foot-contact{grid-column:1/-1}
}
@media (max-width:560px){
  .foot-grid{grid-template-columns:1fr;gap:22px}
  .foot-grid>.about,.foot-grid>.foot-contact{grid-column:auto}
}

/* ============================================================
   14. 跨设备与浏览器兼容加固
   ============================================================ */

/* --- 导航防折行：电话号码 / logo 副标语 / 一级菜单 --- */
.nav-phone{white-space:nowrap}
.logo small{white-space:nowrap}
.nav-menu>li>a{white-space:nowrap}

/* --- 横向溢出兜底：clip 不产生滚动容器、不破坏 sticky（旧浏览器回落 hidden） --- */
body{overflow-x:clip}
html{-webkit-tap-highlight-color:rgba(0,0,0,0)}
a,button,.btn,.nav-cta,.mobile-bar a{touch-action:manipulation}

/* --- Safari 前缀补齐 --- */
header.nav{-webkit-backdrop-filter:saturate(180%) blur(12px)}
.hero-visual{-webkit-backdrop-filter:blur(6px)}

/* --- inset 兜底（Safari < 14.1 不支持 inset 简写） --- */
.hero-pattern,.map-card .roads,.drawer{top:0;right:0;bottom:0;left:0}
.thumb img,.gallery-main img{top:0;left:0}

/* --- sticky 前缀 --- */
.blog-side{position:-webkit-sticky;position:sticky}
.cmp-table tbody th,.cmp-table thead th:first-child{position:-webkit-sticky;position:sticky}

/* --- 长字符串防撑破表格 --- */
td,th{word-break:break-word}

/* --- iOS：输入框 <16px 聚焦时页面会自动放大 --- */
@media (max-width:980px){
  .field input,.field select,.field textarea{font-size:16px}
  .mobile-bar a{padding:12px 8px}
}

/* --- iPhone 全面屏底部安全区 --- */
@supports (padding:max(0px)){
  .mobile-bar{padding-bottom:max(10px,env(safe-area-inset-bottom))}
}
@media (max-width:980px){
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
}

/* --- 笔记本短视口（768px 高）：压缩 hero，保 CTA 在首屏 --- */
@media (min-width:1081px) and (max-height:820px){
  .hero{min-height:600px;padding:110px 0 54px}
}
@media (min-width:1081px) and (max-height:760px){
  .hero{min-height:540px;padding:100px 0 48px}
  .trust-bar .t-val{font-size:22px}
}

/* --- 大屏（2K/4K）：容器适度加宽，不显空旷 --- */
@media (min-width:1680px){
  :root{--maxw:1280px}
}

/* --- 320-360 小屏：收窄页边距防溢出 --- */
@media (max-width:360px){
  .wrap{padding:0 16px}
}

/* --- 联系页两栏：原内联样式导致媒体查询失效、手机端不塌栏 --- */
.contact-cols{grid-template-columns:1.1fr .9fr;gap:32px}
@media (max-width:680px){
  .contact-cols{grid-template-columns:1fr}
}

/* --- 内页 page-hero 移动端字号（38px 在 ≤480 视口被 overflow:hidden 裁切） --- */
@media (max-width:640px){
  .page-hero{padding:96px 0 56px}
  .page-hero h1{font-size:26px;letter-spacing:0}
  .page-hero p{font-size:15.5px}
}