:root{
  --navy:#0d1f2d; --navy2:#15303f; --red:#c8102e; --red-d:#a10c24;
  --steel:#55656f; --mut:#6b7a85; --line:#e3e9ee; --bg:#f5f8fa; --white:#fff;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:#1b2a35;background:var(--white);line-height:1.72;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 22px}
.mono{font-family:ui-monospace,Consolas,"Courier New",monospace}

/* ---------------- 顶部 ---------------- */
header.site{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;gap:22px;height:76px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand img{height:44px;width:auto}
.brand-txt{display:flex;flex-direction:column;line-height:1.25}
.brand-txt b{font-size:16.5px;color:var(--navy);letter-spacing:.3px}
.brand-txt span{font-size:10.5px;color:var(--mut);letter-spacing:1.1px}
nav.main{display:flex;gap:2px;margin-left:auto;align-items:center}
nav.main>a{font-size:14.4px;color:#31424e;padding:8px 13px;position:relative;font-weight:500;white-space:nowrap;border-radius:4px}
nav.main>a:hover{color:var(--red);background:#f7f9fb}
nav.main>a.on{color:var(--red)}
nav.main>a.on::after{content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;background:var(--red)}
.head-act{display:flex;align-items:center;gap:14px}
.head-tel{text-align:right;line-height:1.25}
.head-tel small{display:block;font-size:11px;color:var(--mut);letter-spacing:.6px}
.head-tel b{font-size:17px;color:var(--navy);letter-spacing:.4px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border-radius:5px;
  font-size:14.5px;font-weight:600;padding:11px 20px;transition:.18s;cursor:pointer;border:1px solid transparent}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:var(--red-d)}
.btn-line{border-color:#cfd8de;color:var(--navy);background:#fff}
.btn-line:hover{border-color:var(--navy);background:#f4f7f9}
.btn-sm{padding:8px 14px;font-size:13.4px}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:6px;
  cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;margin-left:auto}
.burger i{display:block;width:18px;height:2px;background:var(--navy);transition:.2s}
.burger.on i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger.on i:nth-child(2){opacity:0}
.burger.on i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mnav{display:none;border-top:1px solid var(--line);background:#fff;padding:8px 22px 18px}
.mnav.on{display:block}
.mnav a{display:block;padding:11px 2px;border-bottom:1px solid #eef2f5;font-size:15px;color:#2b3d49}
.mnav a.sub{padding-left:16px;font-size:14px;color:#55656f}
.mnav .m-tel{margin-top:14px;font-size:13px;color:var(--mut)}
.mnav .m-tel b{color:var(--red);font-size:17px}

/* ---------------- 首页英雄 ---------------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#f7fafc 0%,#eef3f7 55%,#e7eef3 100%)}
.hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(13,31,45,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(13,31,45,.045) 1px,transparent 1px);
  background-size:52px 52px;-webkit-mask-image:linear-gradient(to bottom,#000,transparent 82%);
  mask-image:linear-gradient(to bottom,#000,transparent 82%)}
.hero-in{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:44px;align-items:center;
  padding:58px 0 54px}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:1.6px;
  color:var(--red);text-transform:uppercase}
.kicker::before{content:"";width:26px;height:2px;background:var(--red)}
h1{font-size:40px;line-height:1.26;color:var(--navy);margin:14px 0 16px;letter-spacing:-.3px}
h1 em{font-style:normal;color:var(--red)}
.hero p.lead{font-size:15.6px;color:#41525e;max-width:34em}
.hero p.lead b{color:var(--navy)}
.chips-row{display:flex;flex-wrap:wrap;gap:9px;margin:20px 0 24px}
.pill{font-size:13px;padding:6px 12px;border-radius:20px;background:#fff;border:1px solid #dbe4ea;color:#3d4f5b}
.btns{display:flex;flex-wrap:wrap;gap:12px}
.hero-fig{position:relative}
.hero-fig .frame{position:relative;border-radius:12px;overflow:hidden;background:#fff;
  border:1px solid #dfe7ec;box-shadow:0 26px 60px -28px rgba(13,31,45,.42)}
.hero-fig .frame img{width:100%;height:auto;aspect-ratio:4/3;object-fit:contain;padding:10px}
.hero-fig .tag{position:absolute;left:14px;top:14px;background:rgba(13,31,45,.86);color:#fff;
  font-size:12px;letter-spacing:.5px;padding:6px 11px;border-radius:4px}
.hero-fig .badge{position:absolute;right:-10px;bottom:-14px;background:var(--red);color:#fff;
  padding:12px 16px;border-radius:8px;box-shadow:0 16px 30px -14px rgba(200,16,46,.7);line-height:1.3}
.hero-fig .badge b{display:block;font-size:21px;letter-spacing:.5px}
.hero-fig .badge small{font-size:11.5px;opacity:.92;letter-spacing:.3px}

/* ---------------- 数据条 ---------------- */
.stats{background:var(--navy);color:#fff}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding-top:24px;padding-bottom:24px}
.st{text-align:center;border-right:1px solid rgba(255,255,255,.12)}
.st:last-child{border-right:none}
.st .n{font-size:26px;font-weight:700;letter-spacing:.5px}
.st .n i{font-style:normal;font-size:15px;color:#ff8f9f}
.st .t{font-size:12.2px;color:#a9bcc8;letter-spacing:.3px;margin-top:2px}

/* ---------------- 区块 ---------------- */
.block{padding:66px 0}
.block.alt{background:var(--bg)}
.block.tight{padding:44px 0}
.sec-head{max-width:820px;margin-bottom:32px}
.sec-head h2{font-size:28px;color:var(--navy);line-height:1.34;margin:10px 0 10px;letter-spacing:-.2px}
.sec-head p{font-size:14.8px;color:#4b5c68}
.sec-head p b{color:var(--red)}
.sec-head .more{display:inline-flex;align-items:center;gap:6px;font-size:13.8px;color:var(--red);font-weight:600;margin-top:12px}
.sec-head .more:hover{gap:10px}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
.note{font-size:12.8px;color:var(--mut);margin-top:16px;line-height:1.75}
.note b{color:var(--red)}

/* ---------------- 分类卡片 ---------------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -22px rgba(13,31,45,.32);border-color:#d3dde4}
.card .ph{background:#fbfcfd;aspect-ratio:4/3;overflow:hidden;display:flex;align-items:center;justify-content:center;padding:10px;border-bottom:1px solid var(--line)}
.card .ph img{width:100%;height:100%;object-fit:contain}
.card .bd{padding:15px 17px 17px;flex:1}
.card h3{font-size:16.4px;color:var(--navy);margin-bottom:6px}
.card h3 span{font-size:11.4px;color:var(--red);background:#fdf0f2;border:1px solid #f5d2d9;
  border-radius:3px;padding:1px 7px;margin-left:7px;font-weight:600;vertical-align:2px;white-space:nowrap}
.card p{font-size:13.2px;color:var(--mut)}
.card ul{margin-top:9px;display:flex;flex-wrap:wrap;gap:6px}
.card ul li{list-style:none;font-size:11.8px;color:#526470;background:#f2f6f8;border-radius:3px;padding:3px 8px}

/* ---------------- 图集 ---------------- */
.gals{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gal{margin:0;background:#fff;border:1px solid var(--line);border-radius:9px;overflow:hidden;transition:.18s}
a.gal:hover{border-color:#c9d5dd;box-shadow:0 14px 28px -20px rgba(13,31,45,.35);transform:translateY(-3px)}
.gal img{width:100%;height:auto;aspect-ratio:4/3;object-fit:contain;padding:8px;background:#fbfcfd}
.gal figcaption{font-size:13.4px;color:var(--navy);font-weight:600;text-align:center;padding:9px 6px;border-top:1px solid var(--line)}

/* ---------------- 页头（内页） ---------------- */
.pagehero{position:relative;overflow:hidden;background:linear-gradient(160deg,#f7fafc,#eaf1f5);border-bottom:1px solid var(--line)}
.pagehero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(13,31,45,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(13,31,45,.04) 1px,transparent 1px);
  background-size:52px 52px;-webkit-mask-image:linear-gradient(to bottom,#000,transparent 92%);
  mask-image:linear-gradient(to bottom,#000,transparent 92%)}
.ph-in{position:relative;padding:26px 0 34px}
.ph-in.with-fig{display:grid;grid-template-columns:1.15fr .85fr;gap:0 34px;align-items:center}
.ph-in.with-fig>.crumb{grid-column:1/-1;align-self:start;padding-bottom:22px}
.pagehero h1{font-size:31px;margin:12px 0 12px}
.pagehero p.lead{font-size:14.8px;color:#41525e;max-width:44em}
.pagehero p.lead b{color:var(--navy)}
.ph-in>.ph-txt{min-width:0}
.ph-in.with-fig>.ph-txt{padding-right:6px}
.ph-in:not(.with-fig)>.ph-txt{max-width:820px}

.ph-fig{border:1px solid #dfe7ec;border-radius:10px;background:#fff;padding:6px;
  box-shadow:0 20px 44px -30px rgba(13,31,45,.4)}
.ph-fig img{display:block}
.ph-fig img{width:100%;aspect-ratio:4/3;object-fit:contain}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:7px;font-size:12.6px;color:var(--mut)}
.crumb a{color:#54666f}
.crumb a:hover{color:var(--red)}
.crumb i{font-style:normal;color:#b3c0c9}

/* ---------------- 版式 ---------------- */
.layout{display:grid;grid-template-columns:1fr 318px;gap:38px;align-items:start}
.layout>*{min-width:0}
.layout>div>*, .layout>*>*{min-width:0}
.layout.wide{grid-template-columns:1fr 268px}
.aside{position:sticky;top:96px;display:grid;gap:16px}
.side-box{border:1px solid var(--line);border-radius:10px;background:#fff;padding:18px}
.side-box.dark{background:var(--navy);border-color:var(--navy);color:#dce8ef}
.side-box h3{font-size:14.4px;color:var(--navy);margin-bottom:10px;letter-spacing:.3px}
.side-box.dark h3{color:#fff}
.side-box .tel{display:block;font-size:22px;font-weight:700;color:#fff;letter-spacing:.5px;margin:2px 0 4px}
.side-box p{font-size:12.8px;color:#9db1bf;line-height:1.7}
.side-box .btn{width:100%;margin-top:12px}
.side-list{display:grid;gap:1px}
.side-list a{display:flex;justify-content:space-between;gap:10px;padding:8px 0;font-size:13.2px;color:#3d4f5b;
  border-bottom:1px dashed #e8eef2}
.side-list a:last-child{border-bottom:none}
.side-list a:hover{color:var(--red)}
.side-list i{font-style:normal;font-size:11.6px;color:#9aa9b3}

/* ---------------- 正文排版 ---------------- */
.prose{font-size:15px;color:#2c3d49;line-height:1.85}
.prose>*+*{margin-top:16px}
.prose h2{font-size:21px;color:var(--navy);line-height:1.4;margin-top:34px;padding-left:12px;border-left:3px solid var(--red)}
.prose h3{font-size:16.6px;color:var(--navy);margin-top:24px}
.prose p{color:#33454f}
.prose b,.prose strong{color:var(--navy)}
.prose ul,.prose ol{padding-left:22px;display:grid;gap:7px}
.prose li{font-size:14.6px;color:#33454f}
.prose li::marker{color:var(--red)}
.prose a{color:var(--red);border-bottom:1px solid rgba(200,16,46,.3)}
.prose a:hover{border-color:var(--red)}
.prose .table-wrap{margin:14px 0;border:1px solid var(--line);border-radius:8px;background:#fff;overflow-x:auto}
.prose table{width:100%;border-collapse:collapse;font-size:13.6px;background:#fff;min-width:480px}
.prose th,.prose td{padding:10px 13px;border-bottom:1px solid #eef2f5;text-align:left;vertical-align:top}
.prose thead th{background:#f3f7f9;font-size:12.8px;color:#33454f;white-space:nowrap}
.prose tbody tr:last-child td{border-bottom:none}
.prose tbody tr:hover{background:#fafcfd}
.prose td.nm{font-weight:600;color:var(--navy);white-space:nowrap}
.prose blockquote{border-left:3px solid #cfd8de;background:#f7fafc;padding:14px 18px;color:#4b5c68;font-size:14.2px}
.prose .callout{border:1px solid #f0d5da;background:#fdf5f6;border-radius:8px;padding:14px 18px;font-size:14px;color:#5b3b41}
.prose .callout b{color:var(--red)}
.prose figure{margin:22px 0}
.prose figure img{border:1px solid var(--line);border-radius:9px;background:#fbfcfd;padding:8px;width:100%}
.prose figcaption{font-size:12.6px;color:var(--mut);text-align:center;margin-top:8px}
.prose hr{border:none;border-top:1px solid var(--line);margin:28px 0}

/* ---------------- 产品列表 ---------------- */
.plist{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pitem{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:10px;
  overflow:hidden;transition:.2s}
.pitem:hover{transform:translateY(-4px);box-shadow:0 20px 40px -24px rgba(13,31,45,.34);border-color:#d3dde4}
.pitem .ph{aspect-ratio:4/3;background:#fbfcfd;display:flex;align-items:center;justify-content:center;padding:10px;border-bottom:1px solid var(--line)}
.pitem .ph img{width:100%;height:100%;object-fit:contain}
.pitem .bd{padding:14px 16px 16px;flex:1;display:flex;flex-direction:column}
.pitem h3{font-size:16.2px;color:var(--navy)}
.pitem .en{font-size:10.8px;letter-spacing:1.1px;color:#9aa9b3;margin-top:2px}
.pitem p{font-size:13px;color:var(--mut);margin-top:7px;flex:1}
.pitem .go{font-size:12.8px;color:var(--red);font-weight:600;margin-top:10px}

/* ---------------- 文章列表 ---------------- */
.art-list{display:grid;gap:0}
.art{display:grid;grid-template-columns:132px 1fr;gap:22px;padding:22px 0;border-bottom:1px solid var(--line)}
.art:first-child{padding-top:0}
.art .thumb{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fbfcfd;aspect-ratio:4/3}
.art .thumb img{width:100%;height:100%;object-fit:contain;padding:6px}
.art .meta{font-size:12px;color:#9aa9b3;letter-spacing:.5px;margin-bottom:4px}
.art h3{font-size:17.4px;color:var(--navy);line-height:1.45}
.art h3 a:hover{color:var(--red)}
.art p{font-size:13.6px;color:var(--mut);margin-top:6px}
.art .tagline{margin-top:8px;display:flex;gap:8px;flex-wrap:wrap}
.tg{font-size:11.6px;color:#526470;background:#f2f6f8;border-radius:3px;padding:2px 8px}
.art.feature{grid-template-columns:1fr;gap:16px;padding-bottom:26px}
.art.feature .thumb{aspect-ratio:16/7}
.art.feature h3{font-size:22px}

/* ---------------- 分页 / 相关 ---------------- */
.pager{display:flex;justify-content:space-between;gap:14px;margin-top:34px;border-top:1px solid var(--line);padding-top:20px;flex-wrap:wrap}
.pager a{font-size:13.4px;color:#3d4f5b;max-width:48%}
.pager a:hover{color:var(--red)}
.pager span{font-size:12px;color:#9aa9b3;display:block}
.rel{margin-top:44px}
.rel h2{font-size:17px;color:var(--navy);margin-bottom:14px;letter-spacing:.3px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rel-grid a{display:block;border:1px solid var(--line);border-radius:8px;padding:13px 15px;font-size:14px;
  color:#2c3d49;background:#fff;transition:.18s}
.rel-grid a:hover{border-color:var(--red);color:var(--red)}
.rel-grid a small{display:block;font-size:11.6px;color:#9aa9b3;margin-top:3px}

/* ---------------- 架型元信息 ---------------- */
.meta-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;margin-bottom:26px}
.meta-card{background:var(--navy);color:#e9f1f6;border-radius:10px;padding:20px 22px}
.meta-card dl{display:grid;grid-template-columns:1fr 1fr;gap:12px 18px}
.meta-card dt{font-size:11.4px;color:#8fa6b5;letter-spacing:.4px}
.meta-card dd{font-size:14.6px;color:#fff;font-weight:600}
.dwg-big{position:relative;border:1px solid var(--line);border-radius:10px;background:#fbfcfd;
  padding:8px;cursor:zoom-in;overflow:hidden;font-family:inherit}
.dwg-big img{width:100%;height:100%;aspect-ratio:4/3;object-fit:contain}
.dwg-big span{position:absolute;right:10px;bottom:10px;background:rgba(13,31,45,.86);color:#fff;
  font-size:11.8px;padding:4px 9px;border-radius:4px}

/* ---------------- 组体筛选 ---------------- */
.chipbar{position:sticky;top:76px;z-index:50;display:flex;flex-wrap:wrap;gap:8px;padding:12px 0;
  background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);margin-bottom:26px}
.chip{font-size:13.2px;padding:6px 12px;border-radius:18px;border:1px solid #dbe4ea;background:#fff;
  color:#3d4f5b;cursor:pointer;transition:.15s;font-family:inherit}
.chip i{font-style:normal;color:var(--mut);font-size:11.6px;margin-left:2px}
.chip:hover{border-color:var(--navy);color:var(--navy)}
.chip.on{background:var(--navy);border-color:var(--navy);color:#fff}
.chip.on i{color:#9fb6c4}

/* ---------------- 组体 / 零件 ---------------- */
.groups{display:grid;gap:34px}
.grp{border-top:2px solid var(--navy);padding-top:16px;scroll-margin-top:150px}
.ghd{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.gnum{font-size:12px;font-weight:700;letter-spacing:.6px;color:#fff;background:var(--red);
  padding:2px 8px;border-radius:3px;font-family:ui-monospace,Consolas,monospace}
.ghd h3{font-size:19px;color:var(--navy)}
.ghd h3 a:hover{color:var(--red)}
.gmeta{font-size:12.6px;color:var(--mut)}
.dwgbtn{margin-left:auto;font-size:12.6px;color:var(--navy);background:#fff;border:1px solid #cfd8de;
  border-radius:5px;padding:5px 12px;cursor:pointer;font-family:inherit}
.dwgbtn:hover{border-color:var(--navy);background:#f4f7f9}
.dwgbtn.on{border-color:var(--red);color:var(--red)}
.parts{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px}
.part{background:#fff;border:1px solid var(--line);border-radius:9px;overflow:hidden;transition:.18s;position:relative}
.part:hover{border-color:#c9d5dd;box-shadow:0 14px 28px -20px rgba(13,31,45,.35)}
.pimg{position:relative;display:block;width:100%;aspect-ratio:4/3;background:#fbfcfd;border:0;border-bottom:1px solid var(--line);
  padding:6px;cursor:zoom-in;overflow:hidden;font-family:inherit}
.pimg img{width:100%;height:100%;object-fit:contain}
.pzoom{position:absolute;right:6px;bottom:6px;font-size:10.8px;color:#fff;background:rgba(13,31,45,.72);
  padding:1px 7px;border-radius:3px;opacity:0;transition:.18s}
.pimg:hover .pzoom{opacity:1}
.pbd{padding:10px 12px 12px;line-height:1.5}
.pbd b{display:block;font-size:14px;color:var(--navy)}
.pbd b a:hover{color:var(--red)}
.pbd code{display:block;font-size:11.8px;color:#43545f;font-family:ui-monospace,Consolas,monospace;
  word-break:break-all;margin-top:2px}
.pbd .pm{display:block;font-size:11.8px;color:var(--mut);margin-top:3px}

/* ---------------- 双栏 / 参数 ---------------- */
.two-col{display:grid;grid-template-columns:.82fr 1.18fr;gap:22px;align-items:start}
.spec-card{background:var(--navy);border-radius:10px;padding:22px}
.spec-card h3,.spec-table h3{font-size:15.4px;letter-spacing:.4px;margin-bottom:14px}
.spec-card h3{color:#fff}
.spec-table h3{color:var(--navy)}
.kv-grid{display:grid;gap:10px}
.kv{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid rgba(255,255,255,.09);padding-bottom:8px}
.kv span{font-size:12.6px;color:#9db1bf}
.kv b{font-size:13.8px;color:#fff;font-weight:600;text-align:right}
.kv-light{border-bottom:1px solid #eef2f5}
.kv-light span{color:var(--mut)}
.kv-light b{color:var(--navy)}

/* ---------------- 表格 ---------------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:#fff}
table.spec{width:100%;border-collapse:collapse;min-width:640px}
table.spec th,table.spec td{padding:11px 13px;text-align:left;font-size:13.4px;border-bottom:1px solid #eef2f5;vertical-align:top}
table.spec thead th{background:#f3f7f9;color:#33454f;font-weight:600;font-size:12.8px;letter-spacing:.3px;white-space:nowrap}
table.spec tbody tr:last-child td{border-bottom:none}
table.spec tbody tr:hover{background:#fafcfd}
table.spec td.nm{font-weight:600;color:var(--navy);white-space:nowrap}
table.spec td.hl{color:var(--red);font-weight:600;white-space:nowrap}
table.spec td.code{font-family:ui-monospace,Consolas,monospace;font-size:12.8px;white-space:nowrap}
table.fault td{font-size:13px}

/* ---------------- 工艺 ---------------- */
.proc{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pc{background:#fff;border:1px solid var(--line);border-radius:9px;padding:20px 18px;position:relative}
.pc .no{font-size:11.4px;letter-spacing:1.4px;color:#9aa9b3;font-weight:700}
.pc h3{font-size:15.6px;color:var(--navy);margin:8px 0 6px}
.pc p{font-size:13px;color:var(--mut)}
.pc::after{content:"";position:absolute;left:18px;bottom:0;width:34px;height:3px;background:var(--red);border-radius:2px 2px 0 0}

/* ---------------- FAQ ---------------- */
.faq{display:grid;gap:12px;margin-top:24px}
.qa{background:#fff;border:1px solid var(--line);border-radius:8px;padding:15px 17px}
.qa b{display:block;font-size:14.6px;color:var(--navy);margin-bottom:5px}
.qa p{font-size:13.4px;color:var(--mut)}

/* ---------------- 查询框 ---------------- */
.search{display:flex;gap:10px;margin-bottom:18px;flex-wrap:wrap;align-items:center}
.search input{flex:1;min-width:240px;border:1px solid #cfd8de;border-radius:6px;padding:11px 14px;
  font-size:14px;font-family:inherit;color:var(--navy);outline:none}
.search input:focus{border-color:var(--navy);box-shadow:0 0 0 3px rgba(13,31,45,.06)}
.search .hint{font-size:12.6px;color:var(--mut)}
.search .hint b{color:var(--red)}

/* ---------------- 联系 ---------------- */
.contact{background:linear-gradient(150deg,#0d1f2d,#16323f);color:#e9f2f7;padding:60px 0}
.contact-in{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center}
.contact h2{font-size:29px;color:#fff;line-height:1.3;margin-bottom:12px}
.contact p{font-size:14.6px;color:#adc0cc;max-width:34em}
.contact p b{color:#fff}
.cbox{background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:22px}
.cbox .tel{display:block}
.cbox .tel small{display:block;font-size:11.4px;color:#9db1bf;font-weight:400;letter-spacing:.6px;margin-bottom:2px}
.cbox .tel span{font-size:25px;font-weight:700;color:#fff;letter-spacing:.6px}
.cbox ul{margin:14px 0 0;display:grid;gap:8px}
.cbox li{list-style:none;font-size:13.4px;color:#b9cbd6;padding-left:15px;position:relative}
.cbox li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;background:var(--red);border-radius:50%}
.corp{margin-top:14px;font-size:12.6px;color:#8fa3b0;letter-spacing:.5px}
.contact .btn-line{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.contact .btn-line:hover{background:rgba(255,255,255,.1);border-color:#fff}

/* ---------------- footer ---------------- */
footer.site{background:#08151f;color:#8fa3b0;padding:38px 0 22px;font-size:12.6px}
footer.site .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:26px;padding-bottom:24px;
  border-bottom:1px solid rgba(255,255,255,.09)}
footer.site h4{font-size:13.2px;color:#dbe6ec;margin-bottom:10px;letter-spacing:.6px}
footer.site ul{display:grid;gap:6px}
footer.site li{list-style:none}
footer.site a{color:#9db1bf}
footer.site a:hover{color:#fff}
footer.site .fbrand b{display:block;color:#fff;font-size:15px;letter-spacing:.4px;margin-bottom:6px}
footer.site .fbrand p{color:#8698a4;line-height:1.7;font-size:12.2px}
footer.site .bot{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;padding-top:18px}
footer.site .bot a{border-bottom:1px dashed rgba(157,177,191,.4)}

/* ---------------- 灯箱 ---------------- */
.lb{position:fixed;inset:0;z-index:90;background:rgba(8,18,26,.93);display:none;align-items:center;justify-content:center}
.lb.on{display:flex}
.lb-stage{max-width:min(1100px,92vw);max-height:82vh}
.lb-stage img{max-width:100%;max-height:82vh;width:auto;height:auto;background:#fff;border-radius:6px}
.lb-cap{position:absolute;left:0;right:0;bottom:18px;text-align:center;color:#dbe6ec;font-size:13.4px;padding:0 60px}
.lb-close,.lb-prev,.lb-next{position:absolute;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.28);
  color:#fff;width:42px;height:42px;border-radius:50%;font-size:22px;line-height:1;cursor:pointer;font-family:inherit}
.lb-close{right:20px;top:18px}
.lb-prev{left:16px;top:50%;transform:translateY(-50%)}
.lb-next{right:16px;top:50%;transform:translateY(-50%)}
.lb-close:hover,.lb-prev:hover,.lb-next:hover{background:rgba(255,255,255,.22)}

#toTop{position:fixed;right:20px;bottom:26px;width:42px;height:42px;border-radius:50%;background:var(--navy);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;cursor:pointer;
  opacity:0;pointer-events:none;transition:.25s;z-index:70;box-shadow:0 10px 22px -8px rgba(0,0,0,.5)}
#toTop.show{opacity:1;pointer-events:auto}


/* 四列 / 三列变体 */
.plist.four{grid-template-columns:repeat(4,1fr)}
.cards.four{grid-template-columns:repeat(4,1fr)}
.gals.three{grid-template-columns:repeat(3,1fr)}
@media (max-width:1080px){
  .plist.four,.cards.four{grid-template-columns:1fr 1fr}
  .gals.three{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .plist.four,.cards.four,.gals.three{grid-template-columns:1fr}
}
@media (max-width:1080px){
  .hero-in{grid-template-columns:1fr;gap:34px;padding:42px 0}
  .hero-fig{max-width:560px}
  h1{font-size:34px}
  .layout,.layout.wide{grid-template-columns:1fr}
  .aside{position:static}
  .cards,.plist{grid-template-columns:1fr 1fr}
  .gals{grid-template-columns:1fr 1fr}
  .proc{grid-template-columns:1fr 1fr}
  .meta-grid,.two-col,.contact-in{grid-template-columns:1fr}
  .ph-in.with-fig{grid-template-columns:1fr;gap:24px}
  .rel-grid{grid-template-columns:1fr 1fr}
  .chipbar{top:64px;overflow-x:auto;flex-wrap:nowrap;white-space:nowrap;width:100%;max-width:100%}
  .chip{flex:0 0 auto}
  footer.site .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  nav.main,.head-tel{display:none}
  .burger{display:flex}
}
@media (max-width:680px){
  .head-in{height:64px;gap:10px}
  .brand img{height:36px}
  .brand-txt b{font-size:13.6px}
  .brand-txt span{display:none}
  .head-act .btn{padding:9px 14px;font-size:13.4px}
  h1{font-size:26px}
  .pagehero h1{font-size:23px}
  .hero p.lead{font-size:14.4px}
  .stats .wrap{grid-template-columns:1fr 1fr;gap:14px}
  .st{border-right:none}
  .block{padding:44px 0}
  .sec-head h2{font-size:21px}
  .cards,.gals,.proc,.plist{grid-template-columns:1fr}
  .parts{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
  .pbd b{font-size:13.2px}
  .pbd code{font-size:11px}
  .contact h2{font-size:22px}
  .cbox .tel span{font-size:21px}
  .art{grid-template-columns:96px 1fr;gap:14px}
  .art h3{font-size:15.6px}
  .art.feature h3{font-size:18px}
  .rel-grid{grid-template-columns:1fr}
  .hero-fig .badge{right:8px;bottom:8px}
  .hero-fig .badge b{font-size:17px}
  .hero-fig .badge small{font-size:10.5px}
  .prose{font-size:14.4px}
  .prose h2{font-size:18.4px}
  .prose table{font-size:12.6px}
  .prose th,.prose td{padding:8px 10px}
  footer.site .cols{grid-template-columns:1fr}
  .lb-prev,.lb-next{width:36px;height:36px;font-size:18px}
}