/* 单色光电官网 · 设计系统 v2 —— 人本优先 + AI 可抓取底层 */
:root{
  --navy-950:#081A2B; --navy-900:#0A1F33; --navy-800:#0E2A44; --navy-700:#144062; --navy-600:#1B5580;
  --red:#C8342B; --red-dark:#A82A22; --red-soft:#FBEFEE;
  --ink:#182430; --ink-2:#44576A; --ink-3:#78899A;
  --line:#E3E9EF; --line-2:#D3DCE5;
  --bg:#F4F7FA; --card:#FFFFFF;
  --radius:14px; --radius-s:9px;
  --shadow-s:0 1px 3px rgba(10,31,51,.07),0 1px 2px rgba(10,31,51,.05);
  --shadow-m:0 6px 22px rgba(10,31,51,.10);
  --shadow-l:0 16px 44px rgba(10,31,51,.16);
  --w:1200px;
  --ff:"Microsoft YaHei","PingFang SC","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--ff);color:var(--ink);background:var(--bg);font-size:16px;line-height:1.75}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
table{border-collapse:collapse;width:100%}
.wrap{max-width:var(--w);margin:0 auto;padding:0 24px}
.clean{list-style:none}

/* ============ 顶栏 ============ */
.topbar{background:var(--navy-950);color:#B9C7D4;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:36px}
.topbar a{color:#DDE7F0}
.topbar a:hover{color:#fff}
.topbar .tb-r{display:flex;gap:18px;align-items:center}
.topbar .tb-r b{color:#fff;font-weight:600}
.topbar .tb-r .hp2{color:#9FB6C9;margin-left:9px}
.topbar .tb-r .hp2::before{content:"/";margin-right:8px;color:#63798C}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:100;background:#fff;transition:box-shadow .25s}
.site-header.scrolled{box-shadow:var(--shadow-m)}
.hdr{display:flex;align-items:center;height:76px;gap:26px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand img{height:46px;width:auto}
.brand .bt{line-height:1.2}
.brand .bt b{display:block;font-size:18px;color:var(--navy-800);letter-spacing:.5px}
.brand .bt span{font-size:11.5px;color:var(--ink-3);letter-spacing:2.5px}
.nav{display:flex;gap:2px;margin-left:auto}
.nav>div{position:relative}
.nav a.nl{display:block;padding:10px 12px;font-size:15px;color:var(--ink-2);border-radius:8px;font-weight:500;white-space:nowrap}
.nav a.nl:hover{color:var(--navy-800);background:#EFF4F9}
.nav a.nl.on{color:var(--red);font-weight:600}
.nav .drop{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-l);padding:10px;min-width:240px;opacity:0;visibility:hidden;transition:.2s}
.nav>div:hover .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(2px)}
.nav .drop a{display:block;padding:9px 14px;border-radius:8px;font-size:14.5px;color:var(--ink-2);white-space:nowrap}
.nav .drop a:hover{background:var(--red-soft);color:var(--red)}
.hdr-cta{flex-shrink:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--red);color:#fff;border-radius:10px;padding:11px 22px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:.2s;font-family:inherit}
.btn:hover{background:var(--red-dark);transform:translateY(-1px);box-shadow:0 6px 16px rgba(200,52,43,.3)}
.btn-ghost{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.45);color:#fff;backdrop-filter:blur(4px)}
.btn-ghost:hover{background:rgba(255,255,255,.22);box-shadow:none}
.btn-line{background:#fff;border:1px solid var(--line-2);color:var(--navy-800)}
.btn-line:hover{background:#F2F6FA;box-shadow:none}
.hdr-burger{display:none;background:none;border:none;cursor:pointer;padding:8px}
.hdr-burger span{display:block;width:22px;height:2px;background:var(--navy-800);margin:5px 0;border-radius:2px;transition:.25s}
.mobile-menu{display:none;background:#fff;border-top:1px solid var(--line)}
.mobile-menu a{display:block;padding:13px 26px;font-size:15.5px;color:var(--ink-2);border-bottom:1px solid var(--line)}
.mobile-menu a.on{color:var(--red);font-weight:600}

/* ============ Hero ============ */
.hero{position:relative;min-height:560px;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero .hbg{position:absolute;inset:0;background-size:cover;background-position:center}
.hero .hbg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(6,20,34,.92) 22%,rgba(6,20,34,.55) 55%,rgba(6,20,34,.25))}
.hero .wrap{position:relative;z-index:2;padding-top:70px;padding-bottom:70px}
.hero .kick{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;letter-spacing:3px;color:#8FD8E8;border:1px solid rgba(143,216,232,.4);padding:6px 16px;border-radius:99px;margin-bottom:26px}
.hero h1{font-size:44px;line-height:1.28;font-weight:700;max-width:640px;letter-spacing:1px}
.hero h1 em{font-style:normal;color:#6FD3B8}
.hero .hsub{margin-top:20px;font-size:17.5px;color:#C6D4E0;max-width:560px;line-height:1.9}
.hero .hbtns{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:38px}
.chip{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);backdrop-filter:blur(3px);border-radius:10px;padding:9px 16px;font-size:13.5px;color:#E6EEF5}
.chip b{color:#fff;font-size:15px;margin-right:5px}
.hero-card{position:absolute;right:24px;bottom:-64px;z-index:3;width:400px;background:#fff;border-radius:16px;box-shadow:var(--shadow-l);padding:22px 24px;color:var(--ink)}
.hero-card h3{font-size:16px;color:var(--navy-800);display:flex;align-items:center;gap:8px}
.hero-card h3::before{content:"";width:4px;height:16px;background:var(--red);border-radius:2px}
.hero-card p{font-size:13.5px;color:var(--ink-2);margin-top:8px;line-height:1.8}
.hero-card .nums{display:flex;gap:0;margin-top:14px;border-top:1px dashed var(--line-2);padding-top:14px}
.hero-card .nums div{flex:1;text-align:center}
.hero-card .nums div+div{border-left:1px dashed var(--line-2)}
.hero-card .nums b{display:block;font-size:22px;color:var(--red);font-weight:700}
.hero-card .nums span{font-size:12px;color:var(--ink-3)}

/* ============ 统计条 ============ */
.stats{background:var(--navy-900);color:#fff;margin-top:96px}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);padding-top:34px;padding-bottom:30px}
.stat{text-align:center;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:12%;height:76%;width:1px;background:rgba(255,255,255,.14)}
.stat .n{font-size:40px;font-weight:700;color:#fff;line-height:1.1}
.stat .n em{font-style:normal;font-size:17px;color:#7FB3D5;margin-left:4px;font-weight:500}
.stat .t{font-size:13.5px;color:#93A8BC;margin-top:6px}

/* ============ 通用区块 ============ */
section.sec{padding:74px 0}
.sec-head{text-align:center;max-width:680px;margin:0 auto 46px}
.kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:3px;color:var(--red);margin-bottom:12px}
.kicker::before,.kicker::after{content:"—";color:var(--line-2);margin:0 8px}
.sec-head h1,.sec-head h2{font-size:31px;color:var(--navy-800);letter-spacing:1px;font-weight:700}
.sec-head p{margin-top:12px;color:var(--ink-2);font-size:15.5px}
.sec-head.left{text-align:left;margin-left:0}

/* ============ 分类卡片 ============ */
.cats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;transition:.25s;display:block;position:relative;overflow:hidden}
.cat-card::after{content:"";position:absolute;left:0;bottom:0;width:0;height:3px;background:var(--red);transition:.3s}
.cat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-m);border-color:transparent}
.cat-card:hover::after{width:100%}
.cat-ic{width:52px;height:52px;border-radius:13px;background:linear-gradient(135deg,var(--navy-800),var(--navy-600));display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.cat-ic svg{width:26px;height:26px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.cat-card h3{font-size:17px;color:var(--navy-800)}
.cat-card p{font-size:13.5px;color:var(--ink-3);margin-top:6px;line-height:1.65}
.cat-card .go{display:inline-flex;align-items:center;gap:5px;font-size:13.5px;color:var(--red);margin-top:14px;font-weight:600}

/* ============ 产品卡片 ============ */
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.25s;position:relative}
.pcard:hover{transform:translateY(-5px);box-shadow:var(--shadow-m);border-color:transparent}
.pcard .pimg{background:#fff;border-bottom:1px solid var(--line);padding:20px;display:flex;align-items:center;justify-content:center;height:225px}
.pcard .pimg img{max-height:100%;max-width:100%;object-fit:contain;transition:transform .3s}
.pcard:hover .pimg img{transform:scale(1.04)}
.pcard .ptag{position:absolute;top:14px;left:14px;background:var(--navy-800);color:#fff;font-size:12px;padding:4px 11px;border-radius:99px;letter-spacing:1px}
.pcard .pbody{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.pcard h3{font-size:17.5px;color:var(--navy-800);line-height:1.45}
.pcard .ptl{font-size:13px;color:var(--ink-3);margin-top:6px}
.pcard ul{margin-top:13px;display:flex;flex-direction:column;gap:6px}
.pcard ul li{font-size:13.5px;color:var(--ink-2);padding-left:18px;position:relative;line-height:1.6}
.pcard ul li::before{content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:50%;background:var(--red);opacity:.75}
.pcard .pmore{margin-top:auto;padding-top:18px;font-size:14px;color:var(--red);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.pcard .pmore::after{content:"→";transition:transform .2s}
.pcard:hover .pmore::after{transform:translateX(4px)}

/* ============ 官方专题 banner ============ */
.banners{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.banners a{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff;transition:.25s;display:block}
.banners a:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.banners img{width:100%;height:170px;object-fit:cover}

/* ============ 应用行业 ============ */
.apps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.app-card{position:relative;border-radius:var(--radius);overflow:hidden;height:340px;display:block}
.app-card img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.app-card:hover img{transform:scale(1.06)}
.app-card .ov{position:absolute;inset:0;background:linear-gradient(to top,rgba(8,26,43,.88) 12%,rgba(8,26,43,.12) 55%)}
.app-card .tx{position:absolute;left:20px;right:20px;bottom:16px;color:#fff}
.app-card .tx b{font-size:17.5px;display:block}
.app-card .tx span{font-size:13px;color:#C9D6E2;display:block;margin-top:5px;line-height:1.6}
.app-card .apl-row{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-top:10px}
.app-card .apl-row em{font-style:normal;font-size:12px;color:#8FA9BF;flex-shrink:0;margin-right:2px}
.app-card .apl{font-size:12px;line-height:1;color:#fff;text-decoration:none;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);border-radius:999px;padding:5px 11px;transition:.2s;white-space:nowrap;display:inline-block}
.app-card .apl:hover{background:var(--red);border-color:var(--red)}

/* ============ 数字/优势深色区 ============ */
.dark-sec{background:linear-gradient(135deg,var(--navy-950),var(--navy-800));color:#fff}
.dark-sec .sec-head h2{color:#fff}
.dark-sec .sec-head p{color:#9FB4C7}
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.why .w{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:26px 24px;transition:.25s}
.why .w:hover{background:rgba(255,255,255,.09);transform:translateY(-4px)}
.why .w .wn{font-size:42px;font-weight:700;color:#fff;line-height:1.1}
.why .w .wn em{font-style:normal;font-size:16px;color:#7FB3D5;margin-left:3px;font-weight:500}
.why .w h4{font-size:16px;margin-top:12px;color:#EAF2F8}
.why .w p{font-size:13.5px;color:#9FB4C7;margin-top:7px;line-height:1.75}

/* ============ 标准/资质 ============ */
.std-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
.std-list li{display:flex;gap:16px;padding:17px 0;border-bottom:1px dashed var(--line-2)}
.std-list .n{flex-shrink:0;width:34px;height:34px;border-radius:9px;background:var(--red-soft);color:var(--red);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:14px}
.std-list b{display:block;font-size:15.5px;color:var(--navy-800)}
.std-list span{font-size:13.5px;color:var(--ink-2);display:block;margin-top:3px}
.std-list .std-kit{line-height:1.95;margin-top:6px}
.pend-note{background:#FFFBEB;border:1px solid #F1E4B8;color:#8A6D1D;border-radius:10px;padding:13px 16px;font-size:13.5px;margin-top:18px;line-height:1.7}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq details[open]{border-color:#EDD3D1;box-shadow:var(--shadow-s)}
.faq summary{cursor:pointer;padding:18px 22px;font-size:16px;font-weight:600;color:var(--navy-800);list-style:none;display:flex;align-items:center;gap:14px;user-select:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q";flex-shrink:0;width:28px;height:28px;border-radius:8px;background:var(--red-soft);color:var(--red);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}
.faq summary::after{content:"+";margin-left:auto;color:var(--ink-3);font-size:20px;transition:.2s;font-weight:400}
.faq details[open] summary::after{transform:rotate(45deg);color:var(--red)}
.faq .a{padding:0 22px 20px 64px;font-size:14.5px;color:var(--ink-2);line-height:1.9}

/* ============ CTA ============ */
.cta-band{background:linear-gradient(120deg,var(--red-dark),var(--red));border-radius:18px;color:#fff;padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;right:-60px;top:-60px;width:230px;height:230px;border-radius:50%;background:rgba(255,255,255,.09)}
.cta-band h3{font-size:24px;letter-spacing:1px}
.cta-band p{margin-top:8px;font-size:14.5px;color:#FBE3E1;max-width:520px}
.cta-band .cb-r{text-align:right;position:relative}
.cta-band .cb-r b{font-size:28px;display:block;letter-spacing:1px}
.cta-band .cb-r span{font-size:13px;color:#FBE3E1}
.cta-band .btn{background:#fff;color:var(--red);margin-top:12px}
.cta-band .btn:hover{background:#F4E9E8;box-shadow:none}

/* ============ 面包屑 ============ */
.crumb{padding:18px 0;font-size:13.5px;color:var(--ink-3)}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--red)}
.crumb span{margin:0 8px;color:var(--line-2)}

/* ============ 产品详情 ============ */
.pd-top{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-bottom:10px}
.pd-img{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;display:flex;align-items:center;justify-content:center;min-height:340px;cursor:zoom-in}
.pd-img img{max-height:380px;object-fit:contain}
.pd-info .cat-chip{display:inline-block;background:var(--red-soft);color:var(--red);font-size:12.5px;font-weight:600;padding:5px 13px;border-radius:99px;letter-spacing:1px}
.pd-info h1{font-size:29px;color:var(--navy-800);margin-top:14px;line-height:1.4}
.pd-info .ptl{margin-top:10px;font-size:15px;color:var(--ink-2)}
.pd-info .citable{margin-top:18px;background:#fff;border:1px solid var(--line);border-left:3px solid var(--red);border-radius:0 12px 12px 0;padding:16px 20px;font-size:14.5px;color:var(--ink-2);line-height:1.9}
.pd-info .citable .lbl{font-size:12px;font-weight:700;color:var(--red);letter-spacing:2px;margin-bottom:5px}
.pd-cta{margin-top:22px;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.pd-phone{font-size:14px;color:var(--ink-2)}
.pd-phone b{font-size:19px;color:var(--navy-800)}
h2.sec-h{font-size:22px;color:var(--navy-800);margin:52px 0 6px;position:relative;padding-left:15px}
h2.sec-h::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:3px;background:var(--red)}
.sec-h-sub{font-size:13.5px;color:var(--ink-3);margin-bottom:16px;padding-left:15px}
.tbl-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow-x:auto}
table.spec th{background:var(--navy-800);color:#fff;font-size:14px;font-weight:600;text-align:left;padding:13px 18px;white-space:nowrap}
table.spec td{padding:13px 18px;font-size:14.5px;border-top:1px solid var(--line);color:var(--ink-2);vertical-align:top}
table.spec tbody tr:nth-child(even){background:#F8FAFC}
table.spec td:first-child{color:var(--ink);font-weight:600;white-space:nowrap;width:220px}
table.spec td.num{font-variant-numeric:tabular-nums}
.tbl-note{font-size:13px;color:var(--ink-3);margin-top:12px;line-height:1.8}
.feats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.feats li{background:#fff;border:1px solid var(--line);border-radius:11px;padding:14px 18px;font-size:14.5px;color:var(--ink-2);display:flex;gap:11px;align-items:flex-start;line-height:1.7}
.feats li::before{content:"✓";flex-shrink:0;color:var(--red);font-weight:700;margin-top:1px}
.apps2{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.apps2 li{background:linear-gradient(135deg,#F5F9FC,#EEF4F9);border:1px solid var(--line);border-radius:11px;padding:14px 18px;font-size:14.5px;color:var(--ink-2);line-height:1.7;padding-left:44px;position:relative}
.apps2 li::before{content:"▸";position:absolute;left:18px;color:var(--navy-600);font-weight:700}
.pd-nav{display:flex;justify-content:space-between;margin-top:52px;padding-top:22px;border-top:1px solid var(--line)}
.pd-nav a{font-size:14px;color:var(--ink-2);max-width:46%}
.pd-nav a b{display:block;font-size:12px;color:var(--ink-3);font-weight:400;letter-spacing:1px;margin-bottom:3px}
.pd-nav a:hover{color:var(--red)}
.pd-nav a.nx{text-align:right;margin-left:auto}

/* ============ 产品列表页筛选 ============ */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.fpill{background:#fff;border:1px solid var(--line-2);color:var(--ink-2);border-radius:99px;padding:9px 20px;font-size:14px;cursor:pointer;transition:.2s;font-family:inherit}
.fpill:hover{border-color:var(--navy-600);color:var(--navy-800)}
.fpill.on{background:var(--navy-800);border-color:var(--navy-800);color:#fff;font-weight:600}
.pcard.hide{display:none}

/* ============ 选型向导 ============ */
.wizard{background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px 38px}
.wz-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-bottom:8px}
.wz-step .lb{font-size:13px;font-weight:700;color:var(--red);letter-spacing:2px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.wz-step .lb::before{content:attr(data-n);width:22px;height:22px;border-radius:50%;background:var(--red);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:12px}
.wz-opts{display:flex;flex-direction:column;gap:9px}
.wz-opt{text-align:left;background:#F6F9FB;border:1.5px solid transparent;border-radius:10px;padding:12px 16px;font-size:14.5px;color:var(--ink-2);cursor:pointer;transition:.18s;font-family:inherit}
.wz-opt:hover{border-color:var(--navy-600);background:#EEF4F9}
.wz-opt.on{border-color:var(--red);background:var(--red-soft);color:var(--red);font-weight:600}
.wz-opts .dis{opacity:.45;pointer-events:none}
.wz-result{margin-top:30px;border-top:1px dashed var(--line-2);padding-top:24px;display:none}
.wz-result.show{display:block}
.wz-result h4{font-size:16px;color:var(--navy-800)}
.wz-recs{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:16px}
.wz-rec{display:flex;gap:14px;background:#F8FAFC;border:1px solid var(--line);border-radius:12px;padding:14px;align-items:center;transition:.2s}
.wz-rec:hover{box-shadow:var(--shadow-s);border-color:var(--line-2)}
.wz-rec img{width:92px;height:70px;object-fit:contain;background:#fff;border-radius:8px;border:1px solid var(--line);padding:4px;flex-shrink:0}
.wz-rec b{font-size:14.5px;color:var(--navy-800);display:block}
.wz-rec span{font-size:12.5px;color:var(--ink-2);display:block;margin-top:4px;line-height:1.6}

/* ============ 联系页 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.cc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;display:flex;gap:18px;align-items:flex-start}
.cc-ic{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--navy-800),var(--navy-600));display:flex;align-items:center;justify-content:center;flex-shrink:0}
.cc-ic svg{width:22px;height:22px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.cc-card h4{font-size:15.5px;color:var(--navy-800)}
.cc-card p{font-size:14.5px;color:var(--ink-2);margin-top:5px;line-height:1.8}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px}
.form-card h3{font-size:19px;color:var(--navy-800)}
.form-card .fh{font-size:13.5px;color:var(--ink-3);margin-top:6px}
.form-card .frow{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}
.form-card input,.form-card textarea,.form-card select{width:100%;border:1px solid var(--line-2);border-radius:10px;padding:12px 15px;font-size:14.5px;font-family:inherit;color:var(--ink);background:#FBFCFE;transition:.2s}
.form-card input:focus,.form-card textarea:focus,.form-card select:focus{outline:none;border-color:var(--navy-600);background:#fff;box-shadow:0 0 0 3px rgba(27,85,128,.12)}
.form-card textarea{resize:vertical;min-height:110px}
.form-card .full{grid-column:1/-1}
.form-card .fnote{font-size:12.5px;color:var(--ink-3);margin-top:12px}
.toast{position:fixed;left:50%;bottom:36px;transform:translateX(-50%) translateY(20px);background:var(--navy-900);color:#fff;padding:13px 26px;border-radius:12px;font-size:14.5px;box-shadow:var(--shadow-l);opacity:0;pointer-events:none;transition:.3s;z-index:300}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ============ 页脚 ============ */
.site-footer{background:var(--navy-950);color:#8FA5B8;margin-top:84px}
.ft-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding:54px 0 40px}
.site-footer h4{color:#DDE8F1;font-size:15px;margin-bottom:16px;letter-spacing:1px}
.site-footer p,.site-footer a{font-size:13.5px;line-height:2.1;color:#8FA5B8}
.site-footer a:hover{color:#fff}
.site-footer .fb{color:#fff;font-weight:600;font-size:17px}
.ft-bottom{border-top:1px solid rgba(255,255,255,.09);padding:20px 0;font-size:12.5px;color:#64798D;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.ft-beian{display:inline-flex;align-items:center;gap:16px;flex-wrap:wrap}
.ft-beian a{color:#64798D;font-size:12.5px;display:inline-flex;align-items:center;gap:5px;line-height:1}
.ft-beian a:hover{color:#fff}
.ft-beian img{display:block;width:16px;height:18px;opacity:.85}
.ft-beian a.gb:hover img{opacity:1}

/* ============ 回到顶部 ============ */
.totop{position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:12px;background:var(--navy-800);color:#fff;border:none;cursor:pointer;box-shadow:var(--shadow-m);opacity:0;pointer-events:none;transition:.25s;z-index:90;font-size:18px}
.totop.show{opacity:1;pointer-events:auto}
.totop:hover{background:var(--red)}

/* ============ 图片灯箱 ============ */
.lightbox{position:fixed;inset:0;background:rgba(6,16,27,.9);z-index:400;display:none;align-items:center;justify-content:center;cursor:zoom-out}
.lightbox.show{display:flex}
.lightbox img{max-width:88vw;max-height:88vh;background:#fff;padding:18px;border-radius:12px}

/* ============ 滚动显现 ============ */
[data-rv]{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
[data-rv].on{opacity:1;transform:none}

/* ============ 公司与行业动态 ============ */
.news-list{display:flex;flex-direction:column;gap:18px}
.ncard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 26px;position:relative;transition:.25s;overflow:hidden;display:block;color:inherit}
.ncard:hover{box-shadow:var(--shadow-m);border-color:transparent}
.ncard::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:0 3px 3px 0;background:var(--red);opacity:.85}
.ncard.hide{display:none}
.nc-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.nc-date{font-size:13px;color:var(--ink-3);letter-spacing:.5px;font-variant-numeric:tabular-nums}
.nc-cat{font-size:12px;padding:3px 11px;border-radius:99px;background:var(--navy-800);color:#fff;letter-spacing:.5px}
.nc-tag{font-size:12px;padding:3px 11px;border-radius:99px;background:var(--red-soft);color:var(--red);letter-spacing:.5px}
.ncard h3{font-size:18px;color:var(--navy-800);line-height:1.55}
.nc-brief{margin-top:10px;font-size:14.5px;color:var(--ink-2);line-height:1.85}
.nc-points{margin-top:13px;display:flex;flex-direction:column;gap:6px}
.nc-points li{font-size:13.5px;color:var(--ink-2);padding-left:18px;position:relative;line-height:1.7}
.nc-points li::before{content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:50%;background:var(--red);opacity:.7}
.nc-more{display:inline-block;margin-top:14px;font-size:13.5px;color:var(--red);font-weight:600}
.nc-more:hover{text-decoration:underline}
/* 首页动态预览 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ncard.sm{padding:20px 22px}
.ncard.sm h3{font-size:16.5px}
.ncard.sm .nc-brief{font-size:13.5px;line-height:1.8}
.nc-note{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;margin-bottom:24px}
.nc-note h4{font-size:15px;color:var(--navy-800);margin-bottom:8px}
.nc-note p{font-size:13.5px;color:var(--ink-2);line-height:1.85}
.nc-note-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:24px}
.nc-cat-note{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}
.nc-cat-note h4{font-size:15px;color:var(--navy-800);margin-bottom:8px}
.nc-cat-note p{font-size:13.5px;color:var(--ink-2);line-height:1.85}

/* ============ 响应式 ============ */
/* ============ 本期优惠浮动角标（仅首页/产品中心；右侧中部偏上，避开内容栏） ============ */
.promo-badge{position:fixed;right:0;top:28%;z-index:95;display:flex;flex-direction:column;align-items:center;gap:3px;background:linear-gradient(160deg,var(--red-dark),var(--red));color:#fff;padding:12px 12px 11px;border-radius:12px 0 0 12px;box-shadow:0 8px 22px rgba(150,30,20,.32);text-decoration:none;animation:promoPulse 1.5s ease-in-out infinite;transition:transform .2s}
.promo-badge:hover{transform:translateX(-5px);filter:brightness(1.06)}
.promo-badge .pb-flash{font-size:15px;font-weight:800;letter-spacing:2px;line-height:1.2;white-space:nowrap}
.promo-badge .pb-model{font-size:11.5px;font-weight:600;letter-spacing:.5px;opacity:.94;white-space:nowrap}
@keyframes promoPulse{0%,100%{opacity:1;box-shadow:0 8px 22px rgba(150,30,20,.32)}50%{opacity:.72;box-shadow:0 8px 30px rgba(200,40,30,.55)}}
@media (prefers-reduced-motion:reduce){.promo-badge{animation:none}}
@media (max-width:1440px){.promo-badge{padding:10px}.promo-badge .pb-flash{font-size:13px;letter-spacing:1px}.promo-badge .pb-model{font-size:10.5px}}
@media (max-width:1100px){.promo-badge{top:24%;writing-mode:vertical-rl;padding:12px 7px;gap:6px;border-radius:10px 0 0 10px}.promo-badge .pb-flash{font-size:13px;letter-spacing:3px}.promo-badge .pb-model{font-size:10px;letter-spacing:1px}}
@media (max-width:760px){.promo-badge{top:18%;padding:10px 6px}.promo-badge .pb-flash{font-size:12px;letter-spacing:2px}.promo-badge .pb-model{font-size:9.5px}}

@media (max-width:1080px){
  .hero-card{display:none}
  .cats{grid-template-columns:repeat(2,1fr)}
  .pgrid{grid-template-columns:repeat(2,1fr)}
  .apps{grid-template-columns:repeat(2,1fr)}
  .why{grid-template-columns:repeat(2,1fr)}
  .banners{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .stats .wrap{grid-template-columns:repeat(2,1fr);gap:20px 0}
  .stat:nth-child(3)::before{display:none}
  .ft-top{grid-template-columns:1fr 1fr}
  .pd-top{grid-template-columns:1fr}
  .std-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .nc-note-cols{grid-template-columns:1fr}
  .nav a.nl{padding:10px 9px;font-size:14px}
  .brand .bt span{display:none}
  .hdr{gap:18px}
}
@media (max-width:760px){
  .topbar .tb-r span.hp{display:none}
  .hdr{height:64px;gap:14px}
  .brand .bt b{font-size:15.5px}
  .brand .bt span{display:none}
  .nav{display:none}
  .hdr-burger{display:block;margin-left:auto}
  .hdr-cta{display:none}
  .mobile-menu.open{display:block}
  .hero{min-height:480px}
  .hero h1{font-size:30px}
  .hero .hsub{font-size:15px}
  .stats .n{font-size:30px}
  section.sec{padding:52px 0}
  .sec-head h2{font-size:24px}
  .cats,.pgrid,.apps,.why,.feats,.apps2,.wz-steps,.wz-recs{grid-template-columns:1fr}
  .cta-band{padding:30px 24px}
  .cta-band .cb-r{text-align:left}
  .hero .wrap{padding-bottom:50px}
  .faq .a{padding-left:22px}
  .form-card .frow{grid-template-columns:1fr}
  .ft-top{grid-template-columns:1fr}
  .pd-nav{flex-direction:column;gap:12px}
  .pd-nav a.nx{text-align:left}
}

/* ============ 参数版本锚点 / 业务沿革（给 AI 与采购方判断「哪一版最新」） ============ */
.ver-bar{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 16px;
  border:1px solid var(--line);border-left:3px solid var(--red);
  background:#FBFAF7;border-radius:0 var(--radius-s) var(--radius-s) 0;
  padding:12px 16px;margin:0 0 18px;font-size:13px;line-height:1.85;color:var(--ink-2);
}
.ver-bar b{color:var(--ink);font-size:14px;letter-spacing:.3px}
.ver-bar .vb-date{color:var(--ink-3)}
.ver-bar .vb-link{color:var(--red);font-weight:600}
.ver-bar .vb-link:hover{text-decoration:underline}
.ver-bar .vb-note{flex:0 0 100%;color:var(--ink-3);font-size:12.5px}

.ver-hero{display:grid;grid-template-columns:repeat(auto-fit,minmax(176px,1fr));gap:16px;margin-bottom:8px}
.ver-hero .vh{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}
.ver-hero .vh b{display:block;font-size:21px;line-height:1.3;color:var(--navy-900);letter-spacing:.4px}
.ver-hero .vh span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:5px}

.er-k{display:inline-block;font-size:11.5px;line-height:1.7;padding:0 8px;border-radius:20px;font-weight:600;white-space:nowrap}
.er-k.legacy{background:var(--red-soft);color:var(--red-dark)}
.er-k.third{background:#EAF1F7;color:var(--navy-700)}
.er-old{color:var(--red-dark);background:var(--red-soft);padding:0 4px;border-radius:3px;
  text-decoration:line-through;text-decoration-thickness:1px;white-space:nowrap}
.er-now{color:var(--navy-800);font-weight:600}

.legacy{max-width:880px;display:grid;gap:14px}
.lg-item{display:grid;grid-template-columns:34px 1fr;gap:14px;align-items:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-s);padding:16px 20px}
.lg-n{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;
  background:var(--navy-900);color:#fff;font-size:13px;font-weight:700;margin-top:3px}
.lg-item p{font-size:15px;line-height:1.95;color:var(--ink-2)}
.legacy-caution{max-width:880px;margin-top:16px;font-size:13.5px;line-height:1.9;color:var(--ink-3)}

@media(max-width:640px){
  .ver-bar{flex-direction:column;gap:4px}
  .lg-item{grid-template-columns:1fr;gap:8px}
}