/* ==========================================================================
   UPS电源 · 科士达 UPS 不间断电源
   宽屏企业版式 · 四档断点自适应 · 零外部依赖
   主色沿用模板橙红 #e94609，深色区为工业深灰蓝
   ========================================================================== */
:root{
  --brand:#e94609; --brand-d:#c93705; --brand-l:#fff1eb;
  --deep:#22282f; --deep2:#2c333c; --slate:#4a5563;
  --line:#e3e6ea; --line2:#eef0f3;
  --bg:#f5f6f8; --bg2:#eef0f4; --white:#fff;
  --ink:#22262b; --ink2:#4d555f; --muted:#6d757f;
  --ok:#1f8a54; --warn:#b8730a;
  --r:4px; --r2:8px;
  --sh:0 1px 2px rgba(24,32,42,.06),0 6px 18px rgba(24,32,42,.06);
  --sh2:0 2px 4px rgba(24,32,42,.08),0 14px 36px rgba(24,32,42,.10);
  --wrap:1440px; --pad:clamp(16px,3vw,40px);
  --fs:clamp(15px,0.35vw + 13px,17px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--white);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  font-size:var(--fs);line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s}
a:hover{color:var(--brand)}
h1,h2,h3,h4,h5,h6{margin:0 0 .6em;line-height:1.35;font-weight:700;color:var(--ink)}
h1{font-size:clamp(22px,2.2vw + 12px,34px)}
h2{font-size:clamp(19px,1.1vw + 13px,25px)}
h3{font-size:clamp(17px,.5vw + 14px,20px)}
p{margin:0 0 1em;max-width:56em}
ul,ol{margin:0 0 1em;padding-left:1.25em}
table{border-collapse:collapse;width:100%}
figure{margin:0}
button{font:inherit;cursor:pointer}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--pad);width:100%}
.clear::after{content:"";display:block;clear:both}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.ic{width:1.15em;height:1.15em;flex:0 0 auto;vertical-align:-.18em}

/* ---------------------------------------------------------------- 顶部信息条 */
.topbar{background:var(--deep);color:#c9d1da;font-size:13.5px;line-height:1.6}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:38px;flex-wrap:wrap}
.topbar b{color:#fff;font-weight:600}
.topbar a.tel{color:var(--brand-l);font-weight:700;white-space:nowrap}
.topbar a.tel:hover{color:#fff}
.tb-r{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.tb-dot{color:#586470}

/* ---------------------------------------------------------------- 页头 */
.site-head{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:60}
.site-head .wrap{display:flex;align-items:center;gap:clamp(12px,2vw,32px);min-height:clamp(62px,6vw,84px)}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand .lm{width:44px;height:44px;border-radius:var(--r2);background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:12px;letter-spacing:.5px;text-align:center;line-height:1.1}
.brand .bt b{display:block;font-size:clamp(16px,1.1vw + 12px,21px);letter-spacing:.5px;line-height:1.2}
.brand .bt span{display:block;font-size:11.5px;color:var(--muted);letter-spacing:1.4px;text-transform:uppercase}
.nav{display:flex;align-items:center;gap:clamp(2px,.5vw,10px);margin-left:auto;list-style:none;padding:0;flex-wrap:nowrap}
.nav>li{position:relative}
.nav>li>a{display:block;padding:10px clamp(7px,.75vw,15px);font-size:clamp(14.5px,.35vw + 13px,16px);
  font-weight:600;color:var(--ink);white-space:nowrap;border-radius:var(--r)}
.nav>li>a:hover{color:var(--brand);background:var(--brand-l)}
.nav>li.on>a{color:var(--brand)}
.nav>li.on>a::after{content:"";display:block;height:2px;background:var(--brand);margin-top:-3px;border-radius:2px}
.drop{position:absolute;top:100%;left:0;min-width:212px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r2);box-shadow:var(--sh2);padding:8px;display:none;z-index:70}
.drop.two{min-width:440px;display:none;grid-template-columns:1fr 1fr;gap:2px}
.nav>li:hover>.drop{display:grid}
.drop a{display:block;padding:8px 12px;font-size:14.2px;color:var(--ink2);border-radius:var(--r);line-height:1.45}
.drop a:hover{background:var(--brand-l);color:var(--brand)}
.head-cta{flex:0 0 auto;display:flex;align-items:center;gap:10px}
.burger{display:none;width:44px;height:40px;border:1px solid var(--line);background:#fff;border-radius:var(--r);
  padding:10px 11px;margin-left:auto}
.burger i{display:block;height:2px;background:var(--ink);border-radius:2px;margin:0 0 5px}
.burger i:last-child{margin-bottom:0}
.btn{display:inline-flex;align-items:center;gap:7px;padding:11px 20px;border-radius:var(--r);
  background:var(--brand);color:#fff!important;font-weight:700;font-size:14.5px;border:1px solid var(--brand);
  line-height:1.2;transition:.18s;white-space:nowrap}
.btn:hover{background:var(--brand-d);border-color:var(--brand-d);color:#fff!important}
.btn.gh{background:#fff;color:var(--brand)!important;border-color:var(--brand)}
.btn.gh:hover{background:var(--brand-l)}
.btn.dk{background:var(--deep);border-color:var(--deep)}
.btn.dk:hover{background:#000;border-color:#000}
.btn.sm{padding:9px 15px;font-size:14px}
.btn.blk{display:flex;justify-content:center;width:100%}

/* ---------------------------------------------------------------- 面包屑 */
.crumb{font-size:13.8px;color:var(--muted);padding:14px 0;border-bottom:1px solid var(--line2)}
.crumb a{color:var(--ink2)}
.crumb .sep{margin:0 7px;color:#b8bfc7}
.crumb span:last-child{color:var(--brand);font-weight:600}

/* ---------------------------------------------------------------- 首页主视觉 */
.hero{position:relative;background:var(--deep);color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.34}
.hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(22,27,33,.94) 0%,rgba(22,27,33,.72) 46%,rgba(22,27,33,.32) 100%)}
.hero .wrap{position:relative;z-index:2;padding-top:clamp(34px,5vw,74px);padding-bottom:clamp(34px,5vw,74px);
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(24px,4vw,58px);align-items:center;
  min-height:clamp(280px,26vw,470px)}
.hero h1{color:#fff;margin-bottom:.35em;text-shadow:0 2px 14px rgba(0,0,0,.3)}
.hero .sub{font-size:clamp(15px,1vw + 12px,19px);color:#dbe3ec;max-width:44em;margin-bottom:1.1em}
.hero .kicker{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--brand-l);
  border-left:3px solid var(--brand);padding-left:10px;margin-bottom:14px;font-weight:700}
.hero-media{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--r2);padding:12px}
.hero-media .main{background:#fff;border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center}
.hero-media .main img{max-height:100%;width:auto;object-fit:contain}
.hero-media .thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:10px}
.hero-media .thumbs button{padding:0;border:1px solid rgba(255,255,255,.22);background:#fff;border-radius:var(--r);overflow:hidden;aspect-ratio:1/1}
.hero-media .thumbs button.on{border-color:var(--brand);outline:2px solid var(--brand)}
.hero-media .thumbs img{width:100%;height:100%;object-fit:cover}
.acts{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
.chips{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r2);overflow:hidden;margin:0 0 4px}
.chips .ch{background:rgba(255,255,255,.07);padding:10px 13px;font-size:13.6px;color:#e6ecf3;display:flex;flex-direction:column;gap:2px}
.chips .ch b{font-size:12px;color:#9fb0c2;font-weight:600;letter-spacing:.4px}

/* ---------------------------------------------------------------- 通用区块 */
.main{padding:clamp(22px,3vw,44px) 0 clamp(30px,4vw,60px)}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:clamp(22px,3vw,42px);align-items:start}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r2);box-shadow:var(--sh);margin-bottom:24px}
.card>.art{padding:clamp(18px,2.4vw,34px)}
.sec-head{margin-bottom:18px}
.sec-head h2{margin-bottom:.3em;position:relative;padding-left:14px}
.sec-head h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;background:var(--brand);border-radius:2px}
.sec-head p{color:var(--ink2);margin:0}
.prose p{max-width:58em}
.prose.lede p{font-size:1.04em}
article.art h2{padding-left:14px;position:relative;margin-top:1.5em}
article.art h2:first-child{margin-top:0}
article.art h2::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;background:var(--brand);border-radius:2px}
article.art h3{margin-top:1.2em}
.ticks{list-style:none;padding:0;display:grid;gap:8px;margin:0 0 1.1em}
.ticks li{position:relative;padding-left:26px;line-height:1.7}
.ticks li::before{content:"";position:absolute;left:0;top:.55em;width:13px;height:13px;border-radius:3px;
  background:var(--brand-l);border:1px solid rgba(233,70,9,.35)}
.ticks li::after{content:"";position:absolute;left:4px;top:.85em;width:5px;height:2px;background:var(--brand);
  transform:rotate(45deg);box-shadow:2px 2px 0 0 var(--brand)}
.concl{background:var(--brand-l);border:1px solid rgba(233,70,9,.28);border-left:4px solid var(--brand);
  border-radius:var(--r);padding:15px 18px;margin:0 0 20px;font-size:1.02em;line-height:1.7}
.concl b{display:block;color:var(--brand);font-size:13px;letter-spacing:1px;margin-bottom:5px}
.deft{background:var(--bg);border:1px dashed var(--line);border-radius:var(--r);padding:15px 18px;margin:22px 0;
  font-size:.98em;color:var(--ink2)}
.deft b{display:block;color:var(--ink);font-size:13px;letter-spacing:1px;margin-bottom:5px}
.quick{border:1px solid var(--line);border-radius:var(--r2);overflow:hidden;margin:0 0 20px}
.quick .q{background:var(--bg);padding:15px 18px}
.quick .q>b{display:block;color:var(--brand);font-size:13px;letter-spacing:1px;margin-bottom:9px}
.quick .ticks{margin:0}
.tb-wrap{border:1px solid var(--line);border-radius:var(--r2);overflow:hidden;margin:0 0 6px;background:#fff}
.tb-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.spec{min-width:640px;font-size:14.4px}
table.spec caption{text-align:left;padding:12px 15px;font-weight:700;background:var(--bg);border-bottom:1px solid var(--line);
  color:var(--ink);font-size:14.8px}
table.spec th,table.spec td{padding:10px 15px;border-bottom:1px solid var(--line2);text-align:left;vertical-align:top}
table.spec thead th{background:var(--deep);color:#fff;font-weight:600;white-space:nowrap;border-bottom:0}
table.spec tbody tr:nth-child(even){background:#fafbfc}
table.spec tbody tr:hover{background:var(--brand-l)}
table.spec tbody th{background:var(--bg);font-weight:600;white-space:nowrap}
.tb-hint{font-size:13px;color:var(--muted);margin:0 0 1.4em}
.fig-meta{font-size:12.8px;color:var(--muted);margin-top:6px}

/* ---------------------------------------------------------------- 图片 */
figure.fg{margin:20px 0}
figure.fg img{border-radius:var(--r2);border:1px solid var(--line);width:100%;object-fit:cover}
figure.fg figcaption{font-size:13.4px;color:var(--muted);padding-top:8px;text-align:center;line-height:1.6}
.fg-row{display:grid;gap:18px;margin:20px 0}
.fg-row.two{grid-template-columns:1fr 1fr}
.fg-row figure.fg{margin:0}

/* ---------------------------------------------------------------- 相关阅读 */
.rel{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.rel>a{border:1px solid var(--line);border-radius:var(--r2);padding:16px 18px;background:#fff;display:flex;flex-direction:column;gap:7px}
.rel>a:hover{border-color:var(--brand);box-shadow:var(--sh2);transform:translateY(-2px)}
.rel>a b{font-size:15.4px;line-height:1.5}
.rel>a p{margin:0;font-size:13.8px;color:var(--ink2);line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel>a .more{font-size:13.4px;color:var(--brand);font-weight:600;margin-top:auto}

/* ---------------------------------------------------------------- 侧栏 */
.side{display:grid;gap:20px;position:sticky;top:96px}
.sb{border:1px solid var(--line);border-radius:var(--r2);overflow:hidden;background:#fff;box-shadow:var(--sh)}
.sb>h3{margin:0;padding:13px 16px;font-size:15.4px;background:var(--deep);color:#fff;font-weight:600;
  display:flex;align-items:center;gap:8px}
.sb>h3.am{background:var(--brand)}
.sb>.bd{padding:14px 16px}
.kv{list-style:none;padding:0;margin:0;display:grid;gap:1px;background:var(--line2)}
.kv li{display:flex;justify-content:space-between;gap:12px;background:#fff;padding:9px 12px;font-size:13.8px}
.kv li span{color:var(--muted);flex:0 0 auto}
.kv li b{text-align:right;font-weight:600}
.toc{list-style:none;padding:0;margin:0;display:grid;gap:2px;counter-reset:t}
.toc li a{display:block;padding:7px 10px 7px 26px;font-size:13.9px;color:var(--ink2);border-radius:var(--r);position:relative;line-height:1.5}
.toc li a::before{counter-increment:t;content:counter(t);position:absolute;left:8px;top:8px;font-size:11.5px;
  color:var(--brand);font-weight:700}
.toc li a:hover,.toc li a.on{background:var(--brand-l);color:var(--brand)}
.plinks{list-style:none;padding:0;margin:0;display:grid;gap:1px}
.plinks li a{display:block;padding:8px 0;font-size:14px;color:var(--ink2);border-bottom:1px dashed var(--line2)}
.plinks li:last-child a{border-bottom:0}
.plinks li a:hover{color:var(--brand)}
.contact-c p{font-size:13.8px;color:var(--ink2);margin:0 0 10px}
.contact-c .big{display:block;font-size:clamp(20px,1.6vw + 14px,27px);font-weight:800;color:var(--brand);
  letter-spacing:.5px;margin-bottom:12px;line-height:1.2}
.contact-c .btn{margin-bottom:8px}
.cta-strip{background:var(--deep);color:#fff;border-radius:var(--r2);padding:20px;text-align:center}
.cta-strip b{display:block;font-size:13px;color:#9fb0c2;letter-spacing:1px;margin-bottom:6px}
.cta-strip .big{font-size:clamp(20px,1.5vw + 14px,26px);font-weight:800;color:var(--brand-l);display:block;margin-bottom:12px}

/* ---------------------------------------------------------------- FAQ */
.faq{display:grid;gap:8px}
.faq details{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}
.faq details[open]{border-color:rgba(233,70,9,.4)}
.faq summary{padding:13px 44px 13px 16px;font-weight:600;cursor:pointer;position:relative;list-style:none;font-size:15.2px;line-height:1.55}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--brand);
  font-size:19px;font-weight:400;line-height:1}
.faq details[open] summary::after{content:"\2212"}
.faq details[open] summary{background:var(--brand-l);color:var(--brand)}
.faq .ans{padding:14px 16px 16px;border-top:1px solid var(--line2);color:var(--ink2);font-size:14.6px;line-height:1.78}

/* ---------------------------------------------------------------- 产品卡片网格 */
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(232px,1fr));gap:16px;margin:0 0 1.4em}
.pcard{border:1px solid var(--line);border-radius:var(--r2);background:#fff;overflow:hidden;
  display:flex;flex-direction:column;transition:.18s}
.pcard:hover{border-color:var(--brand);box-shadow:var(--sh2);transform:translateY(-3px)}
.pcard .pc-img{display:flex;align-items:center;justify-content:center;background:var(--bg);aspect-ratio:4/3;padding:12px}
.pcard .pc-img img{max-height:100%;width:auto;object-fit:contain;mix-blend-mode:multiply}
.pcard .pc-bd{padding:12px 14px 14px;display:flex;flex-direction:column;gap:5px;flex:1}
.pcard .pc-bd b{font-size:15px;line-height:1.4}
.pcard .pc-cap{font-size:13.6px;color:var(--brand);font-weight:600}
.pcard .pc-meta{font-size:12.8px;color:var(--muted);margin-top:auto}

/* 分类磁贴 */
.catcard{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r2);overflow:hidden;
  background:#fff;transition:.18s}
.catcard:hover{border-color:var(--brand);box-shadow:var(--sh2);transform:translateY(-3px)}
.catcard .cc-img{display:flex;align-items:center;justify-content:center;background:var(--bg);aspect-ratio:16/10;padding:10px}
.catcard .cc-img img{max-height:100%;width:auto;object-fit:contain;mix-blend-mode:multiply}
.catcard .cc-bd{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px}
.catcard .cc-tt{display:flex;align-items:center;gap:8px;color:var(--brand)}
.catcard .cc-tt b{color:var(--ink);font-size:16px}
.catcard .cc-ds{font-size:13.6px;color:var(--ink2);line-height:1.65}
.cgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px;margin:0 0 1.6em}

/* 横向图钉条目 */
.tile{display:flex;align-items:center;gap:13px;border:1px solid var(--line);border-radius:var(--r2);
  padding:13px 15px;background:#fff;transition:.18s}
.tile:hover{border-color:var(--brand);box-shadow:var(--sh2)}
.tile .tl-img{flex:0 0 62px;width:62px;height:62px;border-radius:var(--r);overflow:hidden;background:var(--bg);
  display:flex;align-items:center;justify-content:center}
.tile .tl-img img{width:100%;height:100%;object-fit:cover}
.tile b{display:block;font-size:15px;margin-bottom:3px}
.tile span{display:block;font-size:13.4px;color:var(--ink2);line-height:1.6}
.tgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px;margin:0 0 1.6em}

/* 统计条 */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r2);overflow:hidden;margin:0 0 22px}
.stats div{background:#fff;padding:18px 16px;text-align:center}
.stats b{display:block;font-size:clamp(21px,1.7vw + 14px,30px);font-weight:800;color:var(--brand);line-height:1.2}
.stats span{font-size:13.4px;color:var(--muted)}

/* 图标特性块 */
.fgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin:0 0 1.6em}
.fbox{border:1px solid var(--line);border-radius:var(--r2);padding:18px;background:#fff}
.fbox .fi{width:42px;height:42px;border-radius:var(--r);background:var(--brand-l);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:11px}
.fbox .fi .ic{width:22px;height:22px}
.fbox b{display:block;font-size:15.6px;margin-bottom:6px}
.fbox p{margin:0;font-size:13.8px;color:var(--ink2);line-height:1.7}

/* 流程步骤 */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:0 0 1.6em;counter-reset:s}
.steps .st{border:1px solid var(--line);border-radius:var(--r2);padding:20px 18px 18px;background:#fff;position:relative}
.steps .st::before{counter-increment:s;content:"0" counter(s);position:absolute;top:-11px;left:18px;background:var(--brand);
  color:#fff;font-size:12.5px;font-weight:700;padding:3px 9px;border-radius:20px;letter-spacing:.5px}
.steps .st b{display:block;margin:6px 0 6px;font-size:15.4px}
.steps .st p{margin:0;font-size:13.7px;color:var(--ink2);line-height:1.7}

/* 表格化清单 */
.mlist{display:grid;gap:0;border:1px solid var(--line);border-radius:var(--r2);overflow:hidden;margin:0 0 1.6em}
.mlist>div{display:grid;grid-template-columns:minmax(140px,215px) minmax(0,1fr);gap:16px;padding:13px 16px;
  border-bottom:1px solid var(--line2);background:#fff}
.mlist>div:last-child{border-bottom:0}
.mlist>div:nth-child(even){background:#fafbfc}
.mlist b{font-size:14.8px}
.mlist span{font-size:13.9px;color:var(--ink2);line-height:1.72}

/* 内联产品网格容器 */
.pgrid-plain{display:grid;grid-template-columns:repeat(auto-fill,minmax(228px,1fr));gap:15px;margin:0 0 1.4em}

/* ---------------------------------------------------------------- 页脚 */
.site-foot{background:var(--deep);color:#aeb9c5;margin-top:clamp(30px,4vw,64px);font-size:14px}
.site-foot .top{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,42px);
  padding:clamp(30px,4vw,56px) 0 clamp(24px,3vw,40px)}
.site-foot h4{color:#fff;font-size:15.4px;margin:0 0 14px;padding-bottom:10px;border-bottom:1px solid #39414c}
.site-foot ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.site-foot ul a{color:#aeb9c5;font-size:13.8px;line-height:1.5}
.site-foot ul a:hover{color:var(--brand-l)}
.fbrand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.fbrand .lm{width:48px;height:48px;border-radius:var(--r2);background:var(--brand);color:#fff;display:flex;
  align-items:center;justify-content:center;font-weight:800;font-size:13px;line-height:1.1;text-align:center}
.fbrand b{display:block;color:#fff;font-size:19px;line-height:1.2}
.fbrand span{display:block;font-size:11.5px;letter-spacing:1.4px;color:#7d8b9a;text-transform:uppercase}
.site-foot .fline{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:16px 0 22px;
  border-top:1px solid #39414c;font-size:13.4px;color:#8a97a5}
.site-foot .fline a{color:#aeb9c5}
.site-foot .fline a:hover{color:var(--brand-l)}
.fnote{font-size:13.4px;line-height:1.75;color:#98a5b3;margin:0 0 10px}
.ftel{color:var(--brand-l)!important;font-weight:700}

/* ---------------------------------------------------------------- 联系页 */
.contact-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:clamp(20px,3vw,40px)}
.info-list{list-style:none;padding:0;margin:0;display:grid;gap:1px;background:var(--line2);border:1px solid var(--line);border-radius:var(--r2);overflow:hidden}
.info-list li{background:#fff;padding:15px 18px;font-size:14.6px;display:flex;gap:12px;align-items:flex-start}
.info-list li b{flex:0 0 86px;color:var(--muted);font-weight:600;font-size:13.8px;padding-top:1px}
.info-list li span{flex:1}
.form{display:grid;gap:14px}
.form label{display:block;font-size:13.8px;font-weight:600;margin-bottom:5px;color:var(--ink2)}
.form input,.form select,.form textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:var(--r);
  font:inherit;font-size:14.6px;color:var(--ink);background:#fff}
.form input:focus,.form select:focus,.form textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(233,70,9,.1)}
.form .row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.formnote{font-size:13px;color:var(--muted);margin:0}

/* ---------------------------------------------------------------- 响应式：≤1439 / ≤1024 / ≤640 */
@media (max-width:1439px){
  :root{--wrap:1200px}
  .site-foot .top{grid-template-columns:minmax(0,1.4fr) repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  :root{--wrap:100%}
  .nav{position:fixed;inset:0 0 0 auto;width:min(88vw,360px);background:#fff;flex-direction:column;align-items:stretch;
    gap:0;padding:70px 14px 24px;transform:translateX(102%);transition:transform .24s;overflow-y:auto;
    box-shadow:-8px 0 32px rgba(0,0,0,.16);margin:0;z-index:80;display:flex}
  .nav.open{transform:translateX(0)}
  .nav>li>a{padding:12px 10px;border-bottom:1px solid var(--line2);border-radius:0}
  .nav>li.on>a::after{display:none}
  .drop,.drop.two{position:static;display:grid!important;min-width:0;border:0;box-shadow:none;padding:0 0 0 12px;
    background:#fafbfc;border-radius:0}
  .burger{display:block;z-index:90}
  .nav>li.open>.drop{display:grid!important}
  .head-cta{display:none}
  .hero .wrap{grid-template-columns:1fr}
  .hero-media{max-width:440px}
  .layout{grid-template-columns:1fr}
  .side{position:static}
  .contact-grid{grid-template-columns:1fr}
  .site-foot .top{grid-template-columns:1fr 1fr}
  article.art h2{margin-top:1.2em}
}
@media (max-width:640px){
  :root{--pad:16px}
  .topbar{font-size:12.8px}
  .tb-r{gap:10px}
  .tb-l{display:none}
  .fg-row.two{grid-template-columns:1fr}
  .pgrid,.cgrid,.tgrid,.rel,.fgrid,.steps{grid-template-columns:1fr}
  .pcard .pc-img{aspect-ratio:16/9}
  .mlist>div{grid-template-columns:1fr;gap:4px}
  .stats{grid-template-columns:1fr 1fr}
  .contact-grid,.form .row2{grid-template-columns:1fr}
  .site-foot .top{grid-template-columns:1fr;padding-top:28px}
  .hero .wrap{padding-top:26px;padding-bottom:30px}
  .chips{grid-template-columns:1fr 1fr}
  .info-list li{flex-direction:column;gap:3px}
  .info-list li b{flex:0 0 auto}
  table.spec{min-width:520px;font-size:13.6px}
}
@media (min-width:1920px){
  :root{--wrap:1680px}
}
@media print{
  .site-head,.topbar,.site-foot,.side,.crumbs,.acts{display:none}
  .layout{grid-template-columns:1fr}
}