:root{
  --sky:#e8f4fc;
  --sky2:#d0e8f7;
  --sky3:#b0d4ee;
  --blue:#1565c0;
  --blue2:#0d47a1;
  --blue3:#1976d2;
  --blue-lt:#e3f2fd;
  --accent:#f57c00;
  --accent2:#ff9800;
  --ink:#0a1929;
  --ink2:#1a2e42;
  --mid:#4a6880;
  --light:#f0f7ff;
  --white:#fff;
  --gold:#c8960c;
  --green:#16a34a;
  --rule:rgba(21,101,192,.12);
  --serif:'Noto Serif SC',serif;
  --sans:'Noto Sans SC',sans-serif;
  --en:'Barlow',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--sky);color:var(--ink);overflow-x:hidden;font-size:14px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.w{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px)}

/* ════════ SITE HEADER ════════ */
.site-header{
  position:sticky;top:0;z-index:999;
  background:linear-gradient(135deg,#0a3278 0%,#0d47a1 30%,#1565c0 60%,#1e88e5 100%);
  box-shadow:0 4px 20px rgba(10,50,120,.45);
}
.site-header::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(ellipse 70% 100% at 50% -10%,rgba(255,255,255,.16) 0%,transparent 65%),
    radial-gradient(circle 300px at 90% 50%,rgba(255,255,255,.07) 0%,transparent 70%);
}

/* ── 顶部信息条 ── */
.hd-info{border-bottom:1px solid rgba(255,255,255,.12);position:relative;z-index:2}
.hd-info-inner{
  max-width:none;margin:0 auto;padding:7px clamp(28px,5vw,120px);
  display:flex;justify-content:space-between;align-items:center;
}
.hd-info-left{display:flex;gap:22px;align-items:center}
.hd-info-left span{
  display:flex;align-items:center;gap:5px;
  font-size:12px;color:rgba(255,255,255,.78);
}
.hd-info-left span svg{width:12px;height:12px;stroke:rgba(255,255,255,.6);fill:none;stroke-width:2;flex-shrink:0}
.hd-info-right{display:flex;gap:0;align-items:center}
.hd-info-right a{
  font-size:11.5px;color:rgba(255,255,255,.65);
  padding:0 12px;border-right:1px solid rgba(255,255,255,.15);
  transition:color .2s;letter-spacing:.03em;line-height:1;
}
.hd-info-right a:last-child{border-right:none}
.hd-info-right a:hover{color:#fff}
.lang-switch{position:relative;border-right:1px solid rgba(255,255,255,.15)}
.lang-btn{height:18px;display:flex;align-items:center;gap:5px;background:transparent;border:0;color:rgba(255,255,255,.75);font-size:11.5px;padding:0 12px;cursor:pointer;letter-spacing:.03em}
.lang-btn:hover{color:#fff}
.lang-btn svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2}
.lang-menu{position:absolute;right:0;top:22px;width:132px;background:#fff;border:1px solid rgba(21,101,192,.18);box-shadow:0 14px 34px rgba(10,50,120,.22);padding:6px;display:none;z-index:5000}
.lang-menu::before{content:'';position:absolute;left:0;right:0;top:-10px;height:10px}
.lang-switch.open .lang-menu{display:block}
.lang-menu button{width:100%;border:0;background:#fff;color:var(--ink2);padding:9px 10px;text-align:left;font-size:13px;cursor:pointer;white-space:nowrap}
.lang-menu button:hover,.lang-menu button.on{background:#eaf4ff;color:var(--blue);font-weight:800}

/* ── Logo + Nav + 电话 行 ── */
.hd-main{position:relative;z-index:2}
.hd-main-inner{
  max-width:none;margin:0 auto;padding:0 clamp(28px,2.6vw,58px);
  height:66px;display:flex;align-items:center;gap:0;
}

/* Logo区 — 紧凑版 */
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;margin-right:16px}
.logo-emblem{
  width:42px;height:42px;flex-shrink:0;
  background:rgba(255,255,255,.15);
  border:1.5px solid rgba(255,255,255,.35);
  display:flex;align-items:center;justify-content:center;
  position:relative;
}
.logo-emblem::before{
  content:'';position:absolute;inset:3px;border:1px solid rgba(255,255,255,.15);
}
.logo-emblem span{font-family:var(--en);font-weight:800;font-size:17px;color:#fff;letter-spacing:-1px;position:relative;z-index:1}
.logo-info{}
.logo-cn{font-family:var(--serif);font-size:19px;font-weight:700;color:#fff;letter-spacing:.03em;line-height:1.15}
.logo-en{font-size:8.5px;color:rgba(255,255,255,.5);letter-spacing:.14em;text-transform:uppercase}
.logo-divider{width:1px;height:32px;background:rgba(255,255,255,.22);margin:0 14px;flex-shrink:0}
.logo-tagline{font-size:11px;color:rgba(255,255,255,.8);line-height:1.6;white-space:nowrap;font-weight:500}
.logo-tagline strong{display:block;color:var(--accent2);font-weight:700;font-size:12px;letter-spacing:.04em}

/* ── 主导航（带下拉）── */
.nav{display:flex;flex:1 1 auto;min-width:0;align-items:stretch;justify-content:flex-start;margin-left:52px}
.nav-item{position:relative;display:flex;align-items:stretch;min-width:0}
.nav-item>a{
  font-size:17.5px;font-weight:700;color:rgba(255,255,255,.92);
  padding:0 clamp(9px,.7vw,15px);height:66px;display:flex;align-items:center;
  position:relative;transition:color .2s;white-space:nowrap;
  gap:3px;
}
.nav-item>a .arr{
  font-size:9px;color:rgba(255,255,255,.45);transition:transform .25s;
  line-height:1;margin-top:1px;
}
.nav-item>a::after{
  content:'';position:absolute;bottom:0;left:8px;right:8px;
  height:3px;background:#fff;
  transform:scaleX(0);transform-origin:center;transition:transform .3s;
  border-radius:2px 2px 0 0;
}
.nav-item>a:hover,.nav-item.act>a{color:#fff}
.nav-item>a:hover::after,.nav-item.act>a::after{transform:scaleX(1)}
.nav-item:hover>a .arr{transform:rotate(180deg)}

/* 下拉面板 */
.nav-drop{
  position:absolute;top:66px;left:50%;transform:translateX(-50%);
  min-width:190px;background:#fff;
  box-shadow:0 8px 32px rgba(10,50,120,.18);
  border-top:3px solid var(--blue);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .25s,transform .25s;
  transform:translateX(-50%) translateY(-8px);
  z-index:50;
}
.nav-item:hover .nav-drop{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
.site-header.lang-open .nav-drop{opacity:0!important;visibility:hidden!important;pointer-events:none!important}
.site-header.lang-open .nav-item>a .arr{transform:none!important}
.nav-drop a{
  display:flex;align-items:center;gap:10px;
  padding:10px 16px;font-size:14px;color:var(--ink2);
  border-bottom:1px solid rgba(21,101,192,.07);
  transition:all .2s;white-space:nowrap;
}
.nav-drop a:last-child{border-bottom:none}
.nav-drop a:hover{background:var(--blue-lt);color:var(--blue);padding-left:22px}
.nav-drop a[aria-disabled="true"]{cursor:default;opacity:.62}
.nav-drop a svg{width:13px;height:13px;stroke:var(--blue);fill:none;stroke-width:1.8;flex-shrink:0}

/* 大下拉（主营业务 — 三列） */
.nav-drop.wide{
  min-width:620px;left:0;transform:translateY(-8px);
  display:grid;grid-template-columns:1fr 1px 1fr 1px 1fr;
}
.nav-item:hover .nav-drop.wide{transform:translateY(0)}
.nav-drop.wide .drop-col{padding:6px 0}
.nav-drop.wide .drop-col-title{
  font-size:10.5px;font-weight:700;color:var(--blue);
  letter-spacing:.14em;text-transform:uppercase;
  padding:10px 16px 7px;display:flex;align-items:center;gap:5px;
}
.nav-drop.wide .drop-col-title::before{content:'';width:16px;height:2px;background:var(--accent);display:inline-block}
.nav-drop.wide .drop-div{background:rgba(21,101,192,.08);width:1px}
.nav-drop.wide a{padding:9px 16px;font-size:13.5px}

/* 右侧：仅电话+咨询，无公司信息块 */
.hd-right{display:flex;align-items:center;gap:0;flex-shrink:0;margin-left:auto}
.hd-company{display:none} /* 移除公司信息块，避免遮挡 */
.hd-tel-block{
  padding:0 14px;display:flex;align-items:center;gap:9px;
  border-left:1px solid rgba(255,255,255,.18);
}
.hd-tel-icon{
  width:34px;height:34px;background:var(--accent);
  border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;
  animation:telPulse 3s infinite;
}
@keyframes telPulse{0%,100%{box-shadow:0 0 0 0 rgba(245,124,0,.5)}50%{box-shadow:0 0 0 6px rgba(245,124,0,0)}}
.hd-tel-icon svg{width:15px;height:15px;stroke:#fff;fill:none;stroke-width:2.5}
.hd-tel-info{line-height:1.2}
.hd-tel-label{font-size:9px;color:rgba(255,255,255,.5);letter-spacing:.1em;text-transform:uppercase}
.hd-tel-num{font-family:var(--en);font-size:20px;font-weight:700;color:#fff;letter-spacing:.01em;white-space:nowrap}
.hd-btn{
  background:var(--accent);color:#fff;
  padding:13px 22px;font-size:16px;font-weight:700;letter-spacing:.04em;
  transition:all .2s;white-space:nowrap;margin-left:10px;flex-shrink:0;
  border:none;cursor:pointer;
}
.hd-btn:hover{background:#e65100;transform:translateY(-1px);box-shadow:0 4px 14px rgba(245,124,0,.4)}
.hd-phone{display:flex;align-items:center;gap:9px;color:#fff;font-family:var(--en);font-weight:800;font-size:25px;padding:0 16px;border-left:1px solid rgba(255,255,255,.18);white-space:nowrap}
.hd-phone svg{width:21px;height:21px;stroke:#fff;fill:none;stroke-width:2.5}
.hd-phone:hover{text-decoration:underline}
.site-header.lang-open .nav-drop{opacity:0!important;visibility:hidden!important;pointer-events:none!important}
.site-header.lang-open .nav-item>a .arr{transform:none!important}
.site-header.lang-open .hd-main{pointer-events:none}
.site-header.lang-open .lang-switch,.site-header.lang-open .lang-switch *{pointer-events:auto}
body[data-lang="en"] .hd-info-left span:first-child{display:none}
body[data-lang="en"] .logo{margin-right:10px}
body[data-lang="en"] .logo-info{max-width:214px}
body[data-lang="en"] .logo-cn{font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
body[data-lang="en"] .logo-en{font-size:8px;letter-spacing:.1em}
body[data-lang="en"] .logo-divider,body[data-lang="en"] .logo-tagline{display:none}
body[data-lang="en"] .nav{justify-content:flex-start;overflow:visible}
body[data-lang="en"] .nav-item{min-width:0}
body[data-lang="en"] .nav-item>a{font-size:14.5px;padding:0 8px;letter-spacing:0;max-width:190px;min-width:0;overflow:hidden;text-overflow:ellipsis}
body[data-lang="en"] .nav-item>a .arr{flex-shrink:0}
body[data-lang="en"] .nav-item>a::after{left:5px;right:5px}
body[data-lang="en"] .hd-phone{font-size:13px;padding:0 7px}
body[data-lang="en"] .hd-btn{padding:9px 12px;font-size:12px;margin-left:6px;min-width:auto}
@media(max-width:1380px){
  body[data-lang="en"] .nav-item>a{font-size:12px;max-width:160px}
}
@media(max-width:1220px){
  body[data-lang="en"] .nav-item>a{font-size:11.5px;padding:0 5px;max-width:138px}
  body[data-lang="en"] .logo-info{max-width:180px}
}

/* ════════ HERO SLIDER ════════ */
.hero{
  position:relative;
  width:100%;
  height:calc(100vh - 145px);
  min-height:520px;
  overflow:hidden;
  background:var(--blue2);
}
@supports(height:100dvh){
  .hero{height:calc(100dvh - 145px)}
}
.slides{position:absolute;inset:0}
.slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease}
.slide.on{opacity:1}
.slide-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.06);transition:transform 7s ease}
.slide.on .slide-bg{transform:scale(1)}
.slide-ov{position:absolute;inset:0;background:linear-gradient(105deg,rgba(10,25,47,.88) 0%,rgba(13,71,161,.55) 55%,rgba(21,101,192,.2) 100%)}

/* slide images — Unsplash 铝业工厂 */
.s1 .slide-bg,.s2 .slide-bg,.s3 .slide-bg,.s4 .slide-bg{background-image:none}

.hero-txt{position:absolute;inset:0;z-index:5;display:flex;align-items:center}
.hero-txt-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(56px,26vw,540px)}
.hero-badge{display:inline-block;background:var(--accent);color:#fff;font-size:11px;font-weight:600;letter-spacing:.15em;padding:5px 14px;margin-bottom:18px;text-transform:uppercase}
.hero-h1{font-family:var(--serif);font-size:56px;font-weight:700;color:#fff;line-height:1.2;margin-bottom:14px;text-shadow:0 2px 20px rgba(0,0,0,.3);max-width:1100px}
.hero-h1 .hl{color:#90caf9}
.hero-sub{font-size:18px;color:rgba(255,255,255,.85);margin-bottom:32px;font-weight:300;line-height:1.7;max-width:820px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.btn-main{background:var(--accent);color:#fff;padding:13px 28px;font-size:14px;font-weight:600;letter-spacing:.05em;border:none;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;gap:8px}
.btn-main:hover{background:#e65100;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;padding:13px 28px;font-size:14px;font-weight:500;border:1px solid rgba(255,255,255,.5);cursor:pointer;transition:all .2s}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff}

/* slide controls */
.slide-ctrl{position:absolute;bottom:28px;left:0;right:0;z-index:10}
.slide-ctrl-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(56px,7vw,160px);display:flex;align-items:center;gap:20px}
.sdots{display:flex;gap:8px}
.sdot{width:32px;height:3px;background:rgba(255,255,255,.35);cursor:pointer;transition:all .3s}
.sdot.on{background:var(--accent);width:48px}
.sarrows{display:flex;gap:8px;margin-left:auto}
.sarr{width:38px;height:38px;border:1px solid rgba(255,255,255,.4);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;color:#fff}
.sarr:hover{background:var(--accent);border-color:var(--accent)}
.sarr svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2}
.slide-cap{position:absolute;right:24px;bottom:76px;z-index:10;text-align:right;max-width:280px}
.cap-item{display:none}
.cap-item.on{display:block}
.cap-label{font-family:var(--en);font-size:10px;letter-spacing:.25em;color:var(--accent2);text-transform:uppercase;margin-bottom:6px}
.cap-text{font-family:var(--serif);font-size:18px;color:rgba(255,255,255,.9);line-height:1.35}

/* ════════ 今日铝价滚动条 ════════ */
.price-bar{background:linear-gradient(90deg,#0d47a1 0%,#1565c0 100%);height:46px;display:flex;align-items:center;overflow:hidden;border-bottom:2px solid var(--accent)}
.pb-head{display:flex;align-items:center;gap:8px;padding:0 20px;white-space:nowrap;background:rgba(0,0,0,.2);height:100%;flex-shrink:0;border-right:1px solid rgba(255,255,255,.12)}
.pb-live{width:7px;height:7px;border-radius:50%;background:#4ade80;box-shadow:0 0 6px #4ade80;animation:blink 2s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}
.pb-title{font-family:var(--en);font-size:11px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,255,255,.9)}
.pb-date{font-size:10px;color:rgba(255,255,255,.45);letter-spacing:.06em;margin-left:4px}
.pb-source{font-size:10px;color:rgba(255,255,255,.68);letter-spacing:.04em;margin-left:6px}
.pb-scroll{flex:1;overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 20px,#000 calc(100% - 20px),transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 20px,#000 calc(100% - 20px),transparent)}
.pb-track{display:flex;align-items:center;height:46px;animation:ptick 65s linear infinite;white-space:nowrap}
.pb-track:hover{animation-play-state:paused}
@keyframes ptick{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.pi{display:inline-flex;align-items:center;gap:8px;padding:0 28px;border-right:1px solid rgba(255,255,255,.1);height:100%}
.pi-name{font-size:12px;color:rgba(255,255,255,.72);white-space:nowrap}
.pi-val{font-family:var(--en);font-size:18px;font-weight:600;color:#fff}
.pi-unit{font-size:10px;color:rgba(255,255,255,.45)}
.pi-c{font-size:11px;font-weight:600;padding:2px 6px;border-radius:2px}
.pi-c.up{color:#4ade80;background:rgba(74,222,128,.12)}
.pi-c.dn{color:#f87171;background:rgba(248,113,113,.12)}
.pi-c.flat{color:rgba(255,255,255,.4)}

/* ════════ 快捷导航 (产品分类+热搜) ════════ */
.quicknav{background:var(--white);border-bottom:1px solid var(--rule)}
.qn-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px);display:flex;align-items:center;gap:0}
.qn-label{background:var(--blue);color:#fff;padding:14px 28px;font-size:14px;font-weight:700;display:flex;align-items:center;gap:8px;white-space:nowrap;flex-shrink:0}
.qn-label svg{width:16px;height:16px;stroke:#fff;fill:none;stroke-width:2}
.qn-items{display:flex;flex-wrap:wrap;gap:0;flex:1}
.qn-item{padding:14px 24px;font-size:14px;color:var(--mid);border-right:1px solid var(--rule);transition:all .2s;white-space:nowrap}
.qn-item:hover,.qn-item.active{color:var(--blue);background:var(--blue-lt)}
.qn-item.active{box-shadow:inset 0 -3px 0 var(--accent)}
.qn-search{display:flex;align-items:center;margin-left:auto;border:1px solid var(--sky3);overflow:hidden}
.qn-search input{border:none;outline:none;padding:8px 14px;font-size:13px;background:var(--sky);width:clamp(220px,18vw,340px);font-family:var(--sans)}
.qn-search button{background:var(--blue);border:none;color:#fff;padding:8px 14px;cursor:pointer;display:flex;align-items:center}
.qn-search button svg{width:15px;height:15px;stroke:#fff;fill:none;stroke-width:2}

/* ════════ MAIN LAYOUT ════════ */
.main-section{padding:40px 0;background:var(--sky)}
.main-grid{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px);display:grid;grid-template-columns:1fr;gap:0}

/* ── 左侧产品分类 ── */
.main-section .sidebar{display:none}
.sb-head{background:var(--blue);color:#fff;padding:14px 18px;font-size:14px;font-weight:600;letter-spacing:.04em;display:flex;align-items:center;gap:8px}
.sb-head svg{width:16px;height:16px;stroke:#fff;fill:none;stroke-width:2}
.sb-list{background:var(--white);border:1px solid var(--rule);border-top:none}
.sb-item{display:flex;align-items:center;gap:8px;padding:12px 18px;border-bottom:1px solid var(--rule);font-size:13px;color:var(--ink2);cursor:pointer;transition:all .2s;position:relative}
.sb-item:last-child{border-bottom:none}
.sb-item::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--blue);transform:scaleY(0);transition:transform .25s}
.sb-item:hover{background:var(--blue-lt);color:var(--blue);padding-left:24px}
.sb-item:hover::before{transform:scaleY(1)}
.sb-item svg{width:14px;height:14px;stroke:var(--blue);fill:none;stroke-width:2;flex-shrink:0}
.sb-hotline{margin-top:16px;background:linear-gradient(135deg,var(--blue2),var(--blue));padding:20px 18px;color:#fff;text-align:center}
.sb-hotline .shl{font-size:11px;color:rgba(255,255,255,.7);letter-spacing:.1em;margin-bottom:6px}
.sb-hotline .shnum{font-family:var(--en);font-size:22px;font-weight:700;letter-spacing:.02em;margin-bottom:14px}
.sb-hotline .sh-btn{display:block;background:var(--accent);color:#fff;padding:10px;font-size:13px;font-weight:600;text-align:center;letter-spacing:.04em;transition:background .2s}
.sb-hotline .sh-btn:hover{background:#e65100}

/* ── 右侧主内容 ── */
.main-right{}
.product-section{}
.ps-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;border-bottom:2px solid var(--blue);padding-bottom:12px}
.main-section .ps-head{display:none}
.ps-title{font-size:18px;font-weight:700;color:var(--blue2);display:flex;align-items:center;gap:8px}
.ps-title::before{content:'';width:4px;height:20px;background:var(--accent);display:inline-block}
.ps-en{font-family:var(--en);font-size:11px;color:var(--mid);letter-spacing:.15em;text-transform:uppercase;margin-left:8px;font-weight:400}
.ps-more{font-size:12px;color:var(--blue);border:1px solid var(--blue);padding:4px 12px;transition:all .2s}
.ps-more:hover{background:var(--blue);color:#fff}

/* 产品网格 */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:20px}
.product-showcase{position:relative;display:grid;grid-template-columns:1fr;gap:0;margin-bottom:0}
.product-showcase-main{position:relative;width:100%;height:clamp(380px,29vw,640px);background:#dceaf7;border:1px solid rgba(21,101,192,.28);overflow:hidden;box-shadow:none;cursor:pointer}
.product-showcase-main img{width:100%;height:100%;object-fit:cover;object-position:center;transition:transform .45s ease}
.product-showcase-main:hover img{transform:scale(1.025)}
.product-showcase-copy{position:absolute;z-index:2;left:clamp(28px,5vw,88px);right:clamp(28px,5vw,88px);bottom:clamp(30px,5vw,72px);text-align:left;color:#fff;text-shadow:0 3px 18px rgba(0,0,0,.45);pointer-events:none}
.product-showcase-copy h3{font-family:var(--serif);font-size:clamp(28px,3.3vw,56px);line-height:1.16;margin:0 0 12px;max-width:900px}
.product-showcase-copy p{font-size:clamp(14px,1.25vw,20px);line-height:1.7;max-width:760px;margin:0;color:rgba(255,255,255,.9)}
.product-showcase-main.has-copy::before{content:'';position:absolute;z-index:1;inset:0;background:linear-gradient(90deg,rgba(5,25,55,.68),rgba(5,25,55,.18) 65%,transparent)}
.product-showcase-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:#52708f;font-size:20px;font-weight:700;letter-spacing:.08em;background:linear-gradient(135deg,#eaf4fc,#d9e9f7)}
.product-showcase-arrow{position:absolute;z-index:4;top:50%;width:46px;height:46px;transform:translateY(-50%);border:1px solid rgba(255,255,255,.75);background:rgba(9,45,92,.42);color:#fff;font-size:28px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}
.product-showcase-arrow:hover{background:var(--blue);border-color:var(--blue)}
.product-showcase-arrow.prev{left:22px}
.product-showcase-arrow.next{right:22px}
.product-showcase-dots{display:flex;gap:8px;margin-top:12px;align-items:center}
.product-showcase-dots button{width:36px;height:4px;border:0;background:rgba(21,101,192,.22);cursor:pointer;transition:all .2s}
.product-showcase-dots button.active{width:56px;background:var(--accent)}
.product-showcase-empty{padding:38px;background:#fff;border:1px solid var(--line);color:var(--mid)}
.main-section .adv-mini{display:none}
.product-catalog-page{display:grid;gap:18px;grid-column:1/-1}
.product-catalog-head{display:flex;justify-content:space-between;gap:14px;align-items:flex-end;border-bottom:2px solid var(--blue);padding-bottom:14px}
.product-catalog-head h3{margin:0;color:var(--blue2);font-size:24px}
.product-catalog-head p{margin:6px 0 0;color:var(--mid);font-size:14px}
.product-catalog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.product-catalog-card{border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;min-height:330px;overflow:hidden;transition:all .2s}
.product-catalog-card:hover{border-color:var(--blue);box-shadow:0 10px 28px rgba(21,101,192,.12);transform:translateY(-2px)}
.pc-cover{height:140px;background:linear-gradient(135deg,#0d47a1,#1565c0);background-size:cover;background-position:center;position:relative}
.pc-cover::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,35,75,.08),rgba(8,35,75,.45))}
.pc-body{padding:16px;display:flex;flex-direction:column;gap:9px;flex:1}
.product-catalog-card h4{margin:0;color:var(--blue2);font-size:18px;line-height:1.35}
.product-catalog-card .pc-en{font-family:var(--en);font-size:10px;letter-spacing:.08em;color:var(--mid);text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.product-catalog-card p{margin:0;color:var(--ink2);line-height:1.65;font-size:13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-catalog-card .pc-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:auto}
.product-catalog-card .pc-tags span{background:var(--blue-lt);color:var(--blue);padding:5px 8px;font-size:12px;font-weight:700}
.pc-detail{color:var(--blue);font-weight:800;font-size:13px;margin-top:4px}
.product-pager{display:flex;justify-content:center;align-items:center;gap:12px;padding-top:4px}
.product-pager button{border:1px solid var(--blue);background:#fff;color:var(--blue);padding:9px 16px;font-weight:800;cursor:pointer}
.product-pager button:disabled{opacity:.35;cursor:not-allowed}
.product-pager span{font-family:var(--en);color:var(--mid);font-weight:700}
.prod-card{background:var(--white);border:1px solid var(--rule);overflow:hidden;transition:all .3s;cursor:pointer;position:relative}
.prod-card:hover{border-color:var(--blue);box-shadow:0 6px 24px rgba(21,101,192,.12);transform:translateY(-3px)}
.prod-card:hover .pc-overlay{opacity:1}
.pc-img{height:160px;overflow:hidden;background:linear-gradient(135deg,var(--sky2),var(--sky3));position:relative}
.pc-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.prod-card:hover .pc-img img{transform:scale(1.08)}
.pc-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:28px;color:rgba(21,101,192,.2);font-weight:700}
.pc-overlay{position:absolute;inset:0;background:rgba(21,101,192,.7);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.pc-overlay span{color:#fff;font-size:12px;border:1px solid rgba(255,255,255,.7);padding:7px 18px;letter-spacing:.06em}
.pc-body{padding:12px 14px}
.pc-name{font-size:13px;font-weight:600;color:var(--ink2);margin-bottom:4px}
.pc-desc{font-size:12px;color:var(--mid);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ════════ 主营业务三栏卡片 ════════ */
.biz-three{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:12px}
.main-section .biz-three{grid-template-columns:minmax(0,1fr);gap:0;width:100%;margin:0}
.bt-card{background:var(--white);border:1px solid var(--rule);overflow:hidden;transition:all .3s;display:flex;flex-direction:column;min-height:100%}
.bt-card:hover{border-color:var(--blue);box-shadow:0 8px 28px rgba(21,101,192,.12);transform:translateY(-4px)}
.bt-img{position:relative;height:180px;overflow:hidden}
.bt-img-bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .5s}
.bt-img-bg.no-image,.dh-detail-img.no-image{background:
  linear-gradient(135deg,rgba(13,71,161,.92),rgba(21,101,192,.7)),
  repeating-linear-gradient(90deg,rgba(255,255,255,.16) 0 1px,transparent 1px 22px),
  repeating-linear-gradient(0deg,rgba(255,255,255,.12) 0 1px,transparent 1px 22px)}
.bt-card:hover .bt-img-bg{transform:scale(1.06)}
.bt-img-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,25,60,.3),rgba(10,25,60,.7))}
.bt-label{position:absolute;left:0;right:0;bottom:0;padding:14px 16px;color:#fff}
.bt-en{font-family:var(--en);font-size:9px;letter-spacing:.22em;color:rgba(255,255,255,.7);text-transform:uppercase;margin-bottom:4px}
.bt-cn{font-family:var(--serif);font-size:18px;font-weight:700}
.bt-body{padding:16px;display:flex;flex:1;flex-direction:column}
.bt-body p{font-size:12.5px;color:var(--mid);line-height:1.75;margin-bottom:12px}
.bt-specs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.bt-specs span{font-size:11px;color:var(--ink2);background:var(--blue-lt);padding:3px 10px;border-radius:2px}
.bt-specs b{color:var(--blue)}
.bt-btn{font-size:12px;font-weight:600;color:var(--blue);letter-spacing:.04em;display:inline-flex;align-items:center;gap:6px;transition:gap .2s;margin-top:auto}
.bt-card:hover .bt-btn{gap:12px}

/* 五大优势精简版 */
.adv-mini{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:4px}
.am-item{display:flex;align-items:flex-start;gap:10px;padding:14px;background:var(--sky);border:1px solid var(--rule);transition:all .25s}
.am-item:hover{background:var(--white);border-color:var(--blue)}
.am-icon{width:36px;height:36px;background:var(--blue);border-radius:4px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.am-icon svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.6}
.am-txt strong{display:block;font-size:13px;font-weight:600;color:var(--ink2);margin-bottom:3px}
.am-txt span{font-size:11px;color:var(--mid)}

/* ════════ 5大优势（原有，已移至主营业务内，保留CSS不报错） ════════ */
.adv-section{background:linear-gradient(135deg,var(--blue2) 0%,var(--blue) 100%);padding:50px 0}
.adv-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px)}
.adv-top{text-align:center;margin-bottom:40px}
.adv-top h2{font-family:var(--serif);font-size:clamp(24px,3vw,38px);font-weight:700;color:#fff;margin-bottom:8px}
.adv-top h2 em{color:#90caf9;font-style:normal}
.adv-top p{font-size:13px;color:rgba(255,255,255,.65);letter-spacing:.15em;text-transform:uppercase;font-family:var(--en)}
.adv-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:2px}
.adv-card{background:rgba(255,255,255,.06);padding:36px 20px;text-align:center;border:1px solid rgba(255,255,255,.1);transition:all .3s;position:relative;overflow:hidden}
.adv-card:hover{background:rgba(255,255,255,.12);transform:translateY(-4px)}
.adv-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--accent);transform:scaleX(0);transition:transform .3s}
.adv-card:hover::before{transform:scaleX(1)}
.adv-icon{width:60px;height:60px;background:rgba(255,255,255,.1);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 18px}
.adv-icon svg{width:28px;height:28px;stroke:#90caf9;fill:none;stroke-width:1.6}
.adv-card h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:10px}
.adv-card p{font-size:12px;color:rgba(255,255,255,.65);line-height:1.7}

/* ════════ 关于我们 ════════ */
.about-section{padding:60px 0;background:var(--sky)}
.about-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px);display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.about-imgs{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:240px 160px;gap:10px}
.ai1{grid-row:span 2;position:relative;overflow:hidden;background:var(--blue)}
.ai2,.ai3{position:relative;overflow:hidden;background:var(--sky2)}
.about-img-bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .6s ease}
.about-imgs div:hover .about-img-bg{transform:scale(1.06)}
.aib1,.aib2,.aib3{background-image:none}
.aib3{filter:brightness(.8)}
.about-badge{position:absolute;left:0;bottom:0;background:var(--blue);color:#fff;padding:10px 16px}
.about-badge strong{display:block;font-family:var(--en);font-size:28px;font-weight:700;line-height:1}
.about-badge span{font-size:11px;color:rgba(255,255,255,.7)}
.about-text{}
.about-text .sec-eye{font-family:var(--en);font-size:11px;color:var(--accent);letter-spacing:.2em;text-transform:uppercase;font-weight:600;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.about-text .sec-eye::before{content:'';width:28px;height:2px;background:var(--accent)}
.about-text h2{font-family:var(--serif);font-size:clamp(22px,2.8vw,36px);font-weight:700;color:var(--blue2);margin-bottom:18px;line-height:1.3}
.about-text p{font-size:13.5px;color:var(--mid);line-height:1.9;margin-bottom:14px}
.about-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--rule);margin:24px 0;background:var(--white)}
.as-item{padding:18px;text-align:center;border-right:1px solid var(--rule)}
.as-item:last-child{border-right:none}
.as-v{font-family:var(--en);font-size:32px;font-weight:700;color:var(--blue);line-height:1}
.as-v sup{font-size:14px}
.as-l{font-size:11px;color:var(--mid);margin-top:5px;letter-spacing:.04em}
.about-btn{display:inline-flex;align-items:center;gap:10px;background:var(--blue);color:#fff;padding:12px 24px;font-size:13px;font-weight:600;letter-spacing:.04em;transition:all .2s}
.about-btn:hover{background:var(--blue2);transform:translateX(4px)}
.about-btn svg{width:14px;height:14px;stroke:#fff;fill:none;stroke-width:2.5}

/* ════════ 产品优势条 ════════ */
.feat-bar{background:var(--white);padding:40px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.feat-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px);display:grid;grid-template-columns:1fr 3px 1fr;gap:0;align-items:stretch}
.feat-divider{background:var(--blue);width:3px}
.feat-block{padding:0 48px;display:flex;align-items:flex-start;gap:28px}
.feat-block:first-child{padding-left:0}
.feat-num{font-family:var(--en);font-size:72px;font-weight:700;color:var(--blue);line-height:1;letter-spacing:-.03em;opacity:.15;flex-shrink:0}
.feat-content h3{font-family:var(--serif);font-size:22px;font-weight:700;color:var(--blue2);margin-bottom:10px}
.feat-content p{font-size:13px;color:var(--mid);line-height:1.85}

/* ════════ CNC加工产品 ════════ */
.cnc-section{padding:60px 0;background:var(--sky)}
.cnc-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px)}
.sec-header{margin-bottom:36px}
.sec-header .sec-eye{font-family:var(--en);font-size:11px;color:var(--accent);letter-spacing:.2em;text-transform:uppercase;font-weight:600;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.sec-header .sec-eye::before{content:'';width:28px;height:2px;background:var(--accent)}
.sec-header h2{font-family:var(--serif);font-size:clamp(22px,2.8vw,36px);font-weight:700;color:var(--blue2);margin-bottom:8px}
.sec-header p{font-size:13px;color:var(--mid);line-height:1.7}
.cnc-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:32px;align-items:start}
.cnc-photo{position:relative;height:420px;overflow:hidden;background:var(--blue2);margin-top:0}
.cnc-photo-bg{position:absolute;inset:0;background:none center/cover;filter:brightness(.65);transition:opacity .55s ease,transform .6s ease}
.cnc-photo:hover .cnc-photo-bg{transform:scale(1.04)}
.cnc-photo-dots{position:absolute;left:28px;top:26px;display:flex;gap:8px;z-index:3}
.cnc-photo-dot{width:26px;height:3px;background:rgba(255,255,255,.36);border:0;padding:0;cursor:pointer}
.cnc-photo-dot.on{background:var(--accent)}
.cnc-photo-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:44px;height:44px;border:1px solid rgba(255,255,255,.58);background:rgba(8,25,52,.22);color:#fff;display:grid;place-items:center;cursor:pointer;transition:all .25s}
.cnc-photo-arrow:hover{background:rgba(21,101,192,.72);border-color:#fff}
.cnc-photo-arrow.prev{left:22px}
.cnc-photo-arrow.next{right:22px}
.cnc-photo-arrow svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2}
.cnc-photo-ov{position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(10,25,47,.9) 100%)}
.cnc-photo-info{position:absolute;left:0;right:0;bottom:0;padding:28px 28px 24px;color:#fff}
.cnc-photo-info h3{font-family:var(--serif);font-size:22px;font-weight:700;margin-bottom:6px}
.cnc-photo-info p{font-size:13px;color:rgba(255,255,255,.75);margin-bottom:16px}
.cnc-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,.15)}
.ck{background:rgba(255,255,255,.08);padding:12px 14px;text-align:center}
.ck .v{font-family:var(--en);font-size:22px;font-weight:700;color:#fff}
.ck .v sup{font-size:11px;color:#90caf9}
.ck .l{font-size:10px;color:rgba(255,255,255,.55);margin-top:3px;letter-spacing:.06em}
.cnc-right{}
.cnc-features{display:grid;gap:12px}
.cnc-feat{background:var(--white);border:1px solid var(--rule);padding:20px 22px;display:flex;align-items:flex-start;gap:18px;transition:all .3s}
.cnc-feat:hover{border-color:var(--blue);background:var(--blue-lt);transform:translateX(6px)}
.cf-icon{width:44px;height:44px;background:var(--blue);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.cf-icon svg{width:22px;height:22px;stroke:#fff;fill:none;stroke-width:1.8}
.cf-body strong{display:block;font-size:14px;font-weight:600;color:var(--ink2);margin-bottom:5px}
.cf-body p{font-size:12.5px;color:var(--mid);line-height:1.7}
.cnc-process{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--sky3);margin-top:12px;overflow:hidden}
.cp{min-width:0;background:var(--white);padding:16px 10px;text-align:center;border:1px solid transparent;transition:all .2s;cursor:pointer}
.cp:hover{background:var(--blue);border-color:var(--blue)}
.cp:hover .cp-num,.cp:hover .cp-name{color:#fff}
.cp-num{font-family:var(--en);font-size:26px;font-weight:700;color:rgba(21,101,192,.15);line-height:1;margin-bottom:6px}
.cp-name{font-size:12px;font-weight:600;color:var(--ink2);line-height:1.35;overflow-wrap:anywhere}
.cp-sub{font-size:10px;color:var(--mid);margin-top:4px;letter-spacing:.04em;text-transform:uppercase;font-family:var(--en);line-height:1.35;overflow-wrap:anywhere}

/* ════════ 研发材料 ════════ */
.mat-section{padding:60px 0;background:var(--sky2)}
.mat-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px)}
.mat-rows{display:grid;gap:2px}
.mat-row{display:grid;grid-template-columns:280px 1fr;background:var(--white);border:1px solid var(--rule);overflow:hidden;transition:box-shadow .3s}
.mat-row:hover{box-shadow:0 8px 32px rgba(21,101,192,.1)}
.mat-row:nth-child(even){grid-template-columns:1fr 280px}
.mat-row:nth-child(even) .mat-img{order:2}
.mat-row:nth-child(even) .mat-info{order:1}
.mat-img{position:relative;background:var(--blue2);overflow:hidden}
.mat-img-bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .5s ease}
.mat-row:hover .mat-img-bg{transform:scale(1.05)}
.mib1,.mib2,.mib3{background-image:none}
.mat-img-tag{position:absolute;left:0;bottom:0;background:var(--blue);color:#fff;padding:8px 16px}
.mat-img-tag .code{font-family:var(--en);font-size:11px;letter-spacing:.2em;color:rgba(255,255,255,.7)}
.mat-img-tag .name{font-family:var(--serif);font-size:18px;font-weight:700}
.mat-info{padding:28px 32px;display:flex;flex-direction:column;justify-content:center}
.mat-info .tag{display:inline-block;background:var(--blue-lt);color:var(--blue);font-size:10px;font-weight:600;letter-spacing:.15em;padding:4px 10px;border-left:2px solid var(--blue);margin-bottom:14px;text-transform:uppercase}
.mat-info h3{font-family:var(--serif);font-size:22px;font-weight:700;color:var(--blue2);margin-bottom:10px}
.mat-info>p{font-size:13px;color:var(--mid);line-height:1.85;margin-bottom:18px}
.mat-specs{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--rule);margin-bottom:14px}
.ms{padding:10px 14px;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.ms:nth-child(2n){border-right:none}
.ms:nth-last-child(-n+2){border-bottom:none}
.ms .sl{font-size:10px;color:var(--mid);letter-spacing:.1em;text-transform:uppercase;margin-bottom:4px}
.ms .sv{font-family:var(--en);font-size:20px;font-weight:700;color:var(--blue2)}
.ms .su{font-size:11px;color:var(--mid);margin-left:2px}
.mat-apps{display:flex;flex-wrap:wrap;gap:6px}
.mat-app{font-size:11px;color:var(--mid);padding:4px 10px;border:1px solid var(--rule);background:var(--sky)}

/* ════════ 工程案例 ════════ */
.cases-section{padding:60px 0;background:var(--sky)}
.cases-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px)}
.cases-slider{position:relative;overflow:hidden}
.cases-track{display:flex;gap:16px;transition:transform .4s ease}
.case-card{flex:0 0 calc(25% - 12px);background:var(--white);border:1px solid var(--rule);overflow:hidden;cursor:pointer;transition:all .3s}
.case-card:hover{border-color:var(--blue);box-shadow:0 8px 24px rgba(21,101,192,.12);transform:translateY(-4px)}
.case-img{height:180px;background:var(--sky2);overflow:hidden;position:relative}
.case-img-bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .5s}
.case-card:hover .case-img-bg{transform:scale(1.08)}
.ci1,.ci2,.ci3,.ci4,.ci5{background-image:none}
.case-body{padding:16px}
.case-cat{font-size:10px;font-weight:600;letter-spacing:.14em;color:var(--accent);text-transform:uppercase;margin-bottom:6px;font-family:var(--en)}
.case-name{font-size:14px;font-weight:600;color:var(--ink2);margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.case-desc{font-size:12px;color:var(--mid);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cases-arrows{display:flex;gap:8px;margin-top:20px;justify-content:center}
.ca{width:36px;height:36px;border:1px solid var(--blue);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}
.ca:hover{background:var(--blue);color:#fff}
.ca svg{width:15px;height:15px;stroke:var(--blue);fill:none;stroke-width:2}
.ca:hover svg{stroke:#fff}

/* ════════ 资质荣誉 ════════ */
.honor-section{padding:60px 0;background:linear-gradient(180deg,var(--sky2) 0%,var(--sky) 100%)}
.honor-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px)}
.honor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:36px}
.hc{background:var(--white);border:1px solid var(--rule);padding:32px 24px;text-align:center;transition:all .35s;position:relative;overflow:hidden}
.hc:hover{border-color:var(--blue);box-shadow:0 8px 28px rgba(21,101,192,.12);transform:translateY(-5px)}
.hc::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--accent));transform:scaleX(0);transition:transform .35s}
.hc:hover::before{transform:scaleX(1)}
.hc-year{font-family:var(--en);font-size:11px;font-weight:600;color:var(--accent);letter-spacing:.18em;margin-bottom:18px}
.hc-icon{width:58px;height:58px;color:var(--blue);margin:0 auto 18px}
.hc-icon svg{width:100%;height:100%;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.hc-name{font-family:var(--serif);font-size:16px;font-weight:700;color:var(--ink2);margin-bottom:8px;min-height:44px;line-height:1.4}
.hc-desc{font-size:12px;color:var(--mid);line-height:1.65;margin-bottom:16px}
.hc-footer{font-size:11px;color:var(--mid);display:flex;justify-content:space-between;padding-top:12px;border-top:1px solid var(--rule)}
.hc-footer span:last-child{color:var(--blue);font-weight:500}

/* ════════ 三栏底部 (新闻+行业+问答) ════════ */
.news-section{padding:60px 0;background:var(--sky);scroll-margin-top:138px}
.news-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px);display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px}
.news-col{}
.nc-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;border-bottom:2px solid var(--blue);padding-bottom:10px}
.nc-title{font-size:16px;font-weight:700;color:var(--blue2)}
.nc-more{font-size:12px;color:var(--blue);transition:color .2s}
.nc-more:hover{color:var(--accent)}
.nc-list{display:grid;gap:0}
.nc-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--rule);align-items:flex-start;cursor:pointer;transition:color .2s}
.nc-item:last-child{border-bottom:none}
.nc-item:hover .ni-title{color:var(--blue)}
.ni-img{width:72px;height:54px;flex-shrink:0;overflow:hidden;background:var(--sky2)}
.ni-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.nc-item:hover .ni-img img{transform:scale(1.08)}
.ni-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:18px;color:var(--sky3)}
.ni-body{}
.ni-title{font-size:13px;font-weight:500;color:var(--ink2);line-height:1.55;margin-bottom:5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s}
.ni-meta{font-size:11px;color:var(--mid)}
/* 问答样式 */
.qa-item{padding:12px 0;border-bottom:1px dashed var(--rule);cursor:default}
.qa-item:last-child{border-bottom:none}
.qa-q{font-size:13px;font-weight:500;color:var(--ink2);margin-bottom:4px;display:flex;gap:8px;align-items:flex-start;transition:color .2s}
.qa-item:hover .qa-q{color:var(--blue)}
.qa-q-icon{font-family:var(--en);font-size:13px;font-weight:700;color:var(--accent);flex-shrink:0}
.qa-a{font-size:12px;color:var(--mid);line-height:1.6;padding-left:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ════════ 今日铝价资讯（新板块）════════ */
.mkt-section{padding:50px 0;background:var(--white);border-top:1px solid var(--rule)}
.mkt-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px);display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.mkt-news{}
.mkt-price-table{background:var(--sky);border:1px solid var(--rule);overflow:hidden}
.mpt-head{background:var(--blue);color:#fff;padding:14px 18px;font-size:13px;font-weight:600;display:flex;align-items:center;gap:8px}
.mpt-head .live{width:7px;height:7px;border-radius:50%;background:#4ade80;box-shadow:0 0 6px #4ade80;animation:blink 2s infinite}
.mpt-row{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;padding:10px 18px;border-bottom:1px solid var(--rule);font-size:13px;align-items:center}
.mpt-row:last-child{border-bottom:none}
.mpt-row.head{background:var(--sky2);font-weight:600;font-size:11px;color:var(--mid);letter-spacing:.06em;text-transform:uppercase;font-family:var(--en)}
.mpt-row .name{color:var(--ink2);font-weight:500}
.mpt-row .name small{display:block;margin-top:3px;color:var(--mid);font-size:11px;font-weight:400}
.mpt-row .price{font-family:var(--en);font-size:15px;font-weight:600;color:var(--blue2)}
.mpt-row .unit{color:var(--mid);font-size:11px}
.mpt-row .chg{font-size:12px;font-weight:600;padding:2px 8px;border-radius:2px;text-align:right}
.chg.up{color:#16a34a;background:rgba(22,163,74,.1)}
.chg.dn{color:#dc2626;background:rgba(220,38,38,.1)}
.chg.flat{color:var(--mid)}

/* ════════ 行业资讯 ════════ */
.indnews-grid{display:grid;gap:12px}
.in-card{background:var(--white);border:1px solid var(--rule);display:flex;gap:0;overflow:hidden;transition:all .3s;cursor:pointer}
.in-card:hover{border-color:var(--blue);box-shadow:0 4px 16px rgba(21,101,192,.1)}
.in-card-img{width:120px;flex-shrink:0;overflow:hidden;background:var(--sky2);position:relative}
.in-card-img-bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .5s}
.in-card:hover .in-card-img-bg{transform:scale(1.08)}
.inib1,.inib2,.inib3,.inib4{background-image:none}
.in-card-body{padding:14px 16px;flex:1;display:flex;flex-direction:column;justify-content:space-between}
.in-card-src{font-family:var(--en);font-size:10px;font-weight:600;color:var(--accent);letter-spacing:.14em;text-transform:uppercase;margin-bottom:5px}
.in-card-title{font-size:13.5px;font-weight:600;color:var(--ink2);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.in-card-sum{font-size:12px;color:var(--mid);line-height:1.6;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;margin-top:5px}
.in-card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:8px}
.in-card-date{font-size:11px;color:var(--mid)}
.in-card-tag{font-size:10px;color:var(--blue);border:1px solid var(--blue);padding:2px 7px;letter-spacing:.04em}
/* skeleton */
.in-skeleton{height:90px;background:var(--sky);border:1px solid var(--rule);position:relative;overflow:hidden}
.in-skeleton::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent 30%,rgba(255,255,255,.7) 50%,transparent 70%);background-size:200% 100%;animation:shimmer 1.5s infinite}
@keyframes shimmer{from{background-position:200% 0}to{background-position:-200% 0}}
.news-load{display:none;align-items:center;gap:8px;color:var(--mid);font-size:13px;padding:20px 0}
.news-load.show{display:flex}
.nl-spin{width:16px;height:16px;border:2px solid var(--rule);border-top-color:var(--blue);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ════════ 通用 section 基类 ════════ */
.section{padding:60px 0;background:var(--sky)}

/* ════════ 活动专区 ════════ */
.offer-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:3px}
.offer-carousel{position:relative;overflow:hidden;width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px)}
.offer-track{display:flex;gap:18px;transition:transform .35s ease}
.offer-track .offer-card{flex:0 0 calc(50% - 9px);min-height:330px}
.offer-card.has-image::before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,71,161,.94),rgba(21,101,192,.6)),var(--offer-img) center/cover;opacity:.96}
.offer-card>*{position:relative;z-index:1}
.offer-arrows{display:flex;gap:8px;justify-content:center;margin-top:18px}
.offer-arr{width:38px;height:38px;border:1px solid var(--blue);display:grid;place-items:center;color:var(--blue);cursor:pointer;background:#fff}
.offer-arr:hover{background:var(--blue);color:#fff}
.offer-arr svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2}
.offer-card{
  padding:52px 48px;min-height:380px;
  display:flex;flex-direction:column;justify-content:space-between;
  position:relative;overflow:hidden;
}
.oc-primary{
  background:linear-gradient(135deg,#071a2e 0%,#0d3a6b 50%,#1255a0 100%);
  color:#fff;
}
.oc-primary::before{
  content:'';position:absolute;top:-150px;right:-150px;
  width:400px;height:400px;
  background:radial-gradient(circle,rgba(184,212,234,.25),transparent 65%);
  border-radius:50%;pointer-events:none;
}
.oc-primary::after{
  content:'SALE';position:absolute;bottom:-20px;right:-10px;
  font-family:var(--en);font-size:150px;font-weight:700;
  color:rgba(255,255,255,.04);line-height:1;letter-spacing:-.04em;pointer-events:none;
}
.oc-secondary{background:var(--white);border:1px solid var(--rule)}
.offer-card.has-image::before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,71,161,.94),rgba(21,101,192,.6)),var(--offer-img) center/cover;opacity:.96;border-radius:0;pointer-events:none}

.oc-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--en);font-size:11px;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;
  padding:7px 14px;margin-bottom:24px;width:fit-content;
}
.oc-primary .oc-badge{background:rgba(200,169,110,.18);color:#ffd740;border:1px solid rgba(200,169,110,.4)}
.oc-secondary .oc-badge{background:var(--blue-lt);color:var(--blue)}
.oc-badge .dot{width:6px;height:6px;border-radius:50%;background:currentColor;animation:blink2 2s infinite}
@keyframes blink2{0%,100%{opacity:1}50%{opacity:.3}}

.offer-card h3{
  font-family:var(--serif);font-size:clamp(28px,3.2vw,42px);font-weight:700;
  line-height:1.2;margin-bottom:16px;position:relative;z-index:1;
}
.oc-primary h3{color:#fff}
.oc-secondary h3{color:var(--ink2)}
.offer-card p{
  font-size:14px;line-height:1.85;max-width:480px;
  margin-bottom:0;position:relative;z-index:1;
}
.oc-primary p{color:rgba(255,255,255,.75)}
.oc-secondary p{color:var(--mid)}

.oc-bottom{
  display:flex;align-items:flex-end;justify-content:space-between;
  position:relative;z-index:1;padding-top:32px;
}
.oc-price{font-family:var(--en);font-weight:700;letter-spacing:-.02em;line-height:1}
.oc-primary .oc-price{font-size:clamp(48px,6vw,80px);color:#fff}
.oc-primary .oc-price .accent{color:#90caf9}
.oc-secondary .oc-price{font-size:clamp(36px,4vw,56px);color:var(--blue)}
.oc-price small{font-size:16px;font-weight:400;opacity:.65;margin-left:6px}

.oc-btn{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  padding:13px 24px;transition:all .25s;border:none;cursor:pointer;
}
.oc-primary .oc-btn{background:#fff;color:var(--blue)}
.oc-primary .oc-btn:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
.oc-secondary .oc-btn{background:var(--blue);color:#fff}
.oc-secondary .oc-btn:hover{background:var(--blue2);transform:translateY(-2px)}

@media(max-width:900px){.offer-grid{grid-template-columns:1fr}}

/* ════════ LINKS ════════ */
.links-section{background:var(--blue2);padding:20px 0;border-top:2px solid var(--accent)}
.links-inner{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px);display:flex;align-items:center;gap:0}
.links-label{font-size:13px;font-weight:600;color:rgba(255,255,255,.8);padding-right:20px;margin-right:20px;border-right:1px solid rgba(255,255,255,.2);white-space:nowrap;flex-shrink:0}
.links-items{display:flex;flex-wrap:wrap;gap:6px}
.link-tag{font-size:12px;color:rgba(255,255,255,.6);padding:4px 12px;border:1px solid rgba(255,255,255,.2);transition:all .2s}
.link-tag:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.4)}

/* ════════ FOOTER ════════ */
.footer{background:var(--ink);color:rgba(255,255,255,.65);padding:32px 0 0}
.footer-top{width:100%;max-width:none;margin:0 auto;padding:0 clamp(28px,4vw,72px);display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:30px;padding-bottom:26px;border-bottom:1px solid rgba(255,255,255,.08)}
.ft-logo{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.ft-logo-box{width:42px;height:42px;background:var(--blue);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ft-logo-box span{font-family:var(--en);font-weight:800;font-size:17px;color:#fff;letter-spacing:-1px}
.ft-logo-cn{font-family:var(--serif);font-size:20px;font-weight:700;color:#fff}
.ft-logo-en{font-size:9px;color:rgba(255,255,255,.4);letter-spacing:.14em;text-transform:uppercase;margin-top:2px}
.ft-brand>p{margin-top:18px;font-size:12.5px;line-height:1.8;color:rgba(255,255,255,.5)}
.ft-contact-list{margin-top:18px;display:grid;gap:8px}
.ft-ci{display:flex;gap:8px;font-size:12px;color:rgba(255,255,255,.5);align-items:flex-start}
.ft-ci svg{width:12px;height:12px;stroke:rgba(255,255,255,.4);fill:none;stroke-width:2;flex-shrink:0;margin-top:2px}
.ft-col h5{font-size:13px;font-weight:600;color:rgba(255,255,255,.85);margin-bottom:16px;display:flex;align-items:center;gap:8px}
.ft-col h5::after{content:'';flex:1;height:1px;background:rgba(255,255,255,.1)}
.ft-col ul{list-style:none;display:grid;gap:8px}
.ft-col ul a{font-size:12px;color:rgba(255,255,255,.5);transition:color .2s;display:flex;align-items:center;gap:6px}
.ft-col ul a::before{content:'›';color:var(--blue3)}
.ft-col ul a:hover{color:rgba(255,255,255,.85)}
.ft-hotline{display:none;margin-top:18px;background:var(--blue2);padding:16px;border-left:3px solid var(--accent)}
.ft-hotline .fth-l{font-size:11px;color:rgba(255,255,255,.5);margin-bottom:4px}
.ft-hotline .fth-n{font-family:var(--en);font-size:24px;font-weight:700;color:#fff}
.footer-bot{width:100%;max-width:none;margin:0 auto;padding:18px clamp(28px,4vw,72px);display:flex;justify-content:space-between;align-items:center;font-size:11.5px;color:rgba(255,255,255,.3);flex-wrap:wrap;gap:8px}
.footer-bot a{color:rgba(255,255,255,.3);transition:color .2s}
.footer-bot a:hover{color:rgba(255,255,255,.7)}

/* ════════ 右侧悬浮 ════════ */
.float-btns{position:fixed;right:0;top:50%;transform:translateY(-50%);z-index:500;display:flex;flex-direction:column;gap:1px}
.fb{width:48px;padding:11px 0;background:var(--blue);color:#fff;display:flex;flex-direction:column;align-items:center;gap:5px;cursor:pointer;transition:background .2s;border-left:3px solid var(--accent)}
.fb:hover{background:var(--blue2)}
.fb svg{width:19px;height:19px;stroke:#fff;fill:none;stroke-width:2}
.fb span{font-size:10.5px;letter-spacing:.02em;text-align:center;line-height:1.2}
.official-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;grid-column:1/-1}
.official-card{border:1px solid var(--line);background:#f8fbff;padding:16px;display:grid;gap:10px;min-width:0}
.official-card h4{font-size:16px;color:var(--blue2);margin:0}
.official-card p{font-size:12px;color:var(--mid);line-height:1.65;margin:0}
.official-card a,.official-card button{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;padding:10px 12px;border:0;font-weight:700;cursor:pointer;min-height:40px}
.official-card .disabled{background:#eef4fb;color:var(--mid);cursor:default}
.qr-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;grid-column:1/-1}
.qr-card{border:1px solid var(--line);background:#fff;padding:18px;text-align:center;display:grid;justify-items:center}
.qr-card-link{display:grid;justify-items:center;text-decoration:none;width:100%;color:inherit}
.qr-box{width:min(260px,100%);aspect-ratio:1/1;border:1px dashed #b8cbe0;background-color:#f4f8fd;display:flex;align-items:center;justify-content:center;color:var(--mid);font-size:12px;background-size:contain;background-repeat:no-repeat;background-position:center}
.qr-card strong{display:block;margin-top:10px;color:var(--blue2);font-size:13px}
.qr-card span{display:block;margin-top:4px;color:var(--mid);font-size:12px;line-height:1.5;overflow-wrap:anywhere}
.mat-section .sec-header{position:relative;padding-right:120px}
.mat-more{position:absolute;right:0;bottom:2px;display:inline-flex;align-items:center;justify-content:center;min-width:92px;height:34px;border:1px solid var(--blue);color:var(--blue);background:transparent;font-family:var(--en);font-weight:700;font-size:12px;letter-spacing:.04em}
.mat-more:hover{background:var(--blue);color:#fff}

/* ════════ 动态弹层 ════════ */
.dh-modal{position:fixed;inset:0;background:rgba(8,20,42,.62);z-index:1200;display:none;align-items:center;justify-content:center;padding:20px}
.dh-modal.show{display:flex}
.dh-dialog{width:min(1120px,calc(100vw - 40px));max-height:88vh;overflow:auto;background:#fff;box-shadow:0 24px 70px rgba(0,0,0,.28);border-top:4px solid var(--accent)}
.dh-modal.service-only{justify-content:flex-end;align-items:center;padding:24px 118px 24px 24px}
.dh-modal.service-only .dh-dialog{width:min(480px,calc(100vw - 40px));max-height:min(760px,calc(100vh - 36px));overflow:hidden;border-top-width:3px}
.dh-modal.service-only .dh-dialog-head{padding:16px 20px 12px}
.dh-modal.service-only .dh-dialog-body{display:block;padding:0 16px 16px}
.dh-dialog-head{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:18px 28px;border-bottom:1px solid var(--line)}
.dh-dialog-title{font-size:22px;font-weight:700;color:var(--blue2);font-family:var(--serif)}
.dh-dialog-sub{margin-top:4px;font-size:12px;color:var(--mid);letter-spacing:.12em;text-transform:uppercase}
.dh-close{width:36px;height:36px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:24px;line-height:1;color:var(--mid)}
.dh-close:hover{border-color:var(--blue);color:var(--blue)}
.dh-dialog-body{display:grid;grid-template-columns:1.05fr 1fr;gap:22px;padding:26px 28px 28px}
.dh-detail-img{min-height:360px;background:linear-gradient(135deg,var(--blue2),var(--blue));background-size:cover;background-position:center;display:flex;align-items:flex-end;border:1px solid var(--line);position:relative;overflow:hidden}
.dh-detail-img::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,24,52,0) 38%,rgba(4,24,52,.62))}
.dh-detail-img span{position:relative;z-index:1;display:inline-block;margin:22px;background:rgba(255,255,255,.94);color:var(--blue2);font-weight:800;padding:9px 14px;white-space:nowrap}
.dh-detail-text{font-size:14px;line-height:1.75;color:var(--mid);min-width:0}
.dh-product-detail{display:grid;grid-template-columns:minmax(360px,.92fr) minmax(0,1.08fr);gap:34px;grid-column:1/-1;align-items:start}
.dh-product-kicker{font-size:12px;color:var(--blue);font-family:var(--en);font-weight:800;letter-spacing:.14em;text-transform:uppercase;margin-bottom:8px}
.dh-product-title{font-size:34px;font-family:var(--serif);color:var(--blue2);line-height:1.18;margin-bottom:12px}
.dh-product-desc{font-size:16px;color:var(--ink2);line-height:1.78;margin-bottom:18px}
.dh-param-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:20px 0}
.dh-param{background:#f6fbff;border-left:3px solid var(--blue);border-top:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 16px;min-width:0}
.dh-param span{display:block;font-size:11px;color:var(--mid);margin-bottom:4px}
.dh-param strong{display:block;color:var(--ink2);font-size:14px;line-height:1.45;overflow-wrap:anywhere}
.dh-product-section{border-top:1px solid var(--line);padding-top:16px;margin-top:16px}
.dh-product-section h4{margin:0 0 10px;color:var(--blue2);font-size:16px}
.dh-product-section p{margin:0;color:var(--mid);line-height:1.8}
.dh-product-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:12px}
.dh-product-points span{background:#f8fbff;border:1px solid var(--line);padding:10px 12px;color:var(--ink2);font-weight:700;font-size:12px;line-height:1.45}
.dh-detail-tags{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.dh-detail-tags span{background:#eaf3ff;color:var(--blue);font-size:12px;font-weight:700;padding:6px 10px}
.dh-dialog-actions{display:flex;flex-wrap:nowrap;gap:12px;margin-top:22px;align-items:center}
.dh-dialog-actions a,.dh-dialog-actions button{border:0;background:var(--blue);color:#fff;padding:12px 22px;font-weight:700;cursor:pointer;white-space:nowrap;min-width:96px;text-align:center;line-height:1.2}
.dh-dialog-actions .ghost{background:#eef4fb;color:var(--blue2)}
.dh-form{display:grid;gap:12px;grid-column:1/-1}
.dh-form input,.dh-form select,.dh-form textarea{width:100%;border:1px solid var(--line);padding:12px 14px;font:inherit;color:var(--ink);background:#fff}
.dh-form textarea{min-height:110px;resize:vertical}
.dh-form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.dh-contact-box{background:#f3f8ff;border-left:3px solid var(--blue);padding:14px;color:var(--mid);line-height:1.8}
.dh-service-panel{display:block;grid-column:1/-1;background:transparent;color:#fff;min-height:0;width:100%}
.dh-service-side{padding:28px;background:linear-gradient(145deg,#081d3f 0%,#0d47a1 62%,#1565c0 100%);display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
.dh-service-side::after{content:'';position:absolute;right:-80px;bottom:-115px;width:220px;height:220px;border:26px solid rgba(255,255,255,.07);border-radius:50%}
.dh-service-kicker{font-family:var(--en);font-size:11px;font-weight:700;letter-spacing:.22em;color:#90caf9;text-transform:uppercase;margin-bottom:12px}
.dh-service-side h3{font-family:var(--serif);font-size:30px;line-height:1.18;margin-bottom:12px}
.dh-service-side p{color:rgba(255,255,255,.8);line-height:1.75;max-width:280px;font-size:14px}
.dh-service-metrics{display:none}
.dh-service-lines{display:grid;gap:0;font-size:13px;color:rgba(255,255,255,.88);position:relative;z-index:1;margin-top:26px}
.dh-service-lines div{display:grid;grid-template-columns:68px minmax(0,1fr);gap:10px;align-items:start;padding:12px 0;border-top:1px solid rgba(255,255,255,.18)}
.dh-service-lines strong{min-width:64px;color:#fff}
.dh-service-form{padding:28px;background:linear-gradient(180deg,#fbfdff,#eef6ff);color:var(--ink);display:grid;gap:12px}
.dh-service-form-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:2px}
.dh-service-form-head h4{font-size:22px;margin-bottom:4px;color:var(--ink)}
.dh-service-form-head p{font-size:13px;line-height:1.55;color:var(--mid)}
.dh-service-badge{white-space:nowrap;background:#e3f2fd;color:var(--blue2);font-family:var(--en);font-size:10px;font-weight:800;letter-spacing:.12em;padding:7px 10px}
.dh-service-form input,.dh-service-form select,.dh-service-form textarea{height:44px;border:1px solid #c8d8ea;background:#fff;padding:0 12px;font:inherit;color:var(--ink);outline:none}
.dh-service-form textarea{height:118px;padding-top:12px;resize:vertical}
.dh-service-form input:focus,.dh-service-form select:focus,.dh-service-form textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(21,101,192,.12)}
.dh-service-form .dh-dialog-actions{margin-top:4px}
.dh-chat-box{height:min(620px,calc(100vh - 130px));background:#f6f9ff;border:1px solid #d7e5f6;border-radius:18px;overflow:hidden;box-shadow:0 18px 45px rgba(12,48,102,.12);isolation:isolate;display:grid;grid-template-rows:62px minmax(0,1fr) auto}
.dh-chat-head{height:62px;background:#fff;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 16px;border-bottom:1px solid #e5eef8}
.dh-chat-agent{display:flex;align-items:center;gap:10px;min-width:0}
.dh-chat-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#1565c0,#64b5f6);color:#fff;display:grid;place-items:center;font-weight:800;font-family:var(--en);box-shadow:0 0 0 5px #eef6ff;background-size:cover;background-position:center;overflow:hidden}
.dh-chat-avatar.has-logo{color:transparent}
.dh-chat-agent strong{display:block;color:var(--ink);font-size:14px;line-height:1.2}
.dh-chat-agent span{display:block;color:var(--green);font-size:11px;margin-top:2px}
.dh-chat-status{font-size:11px;color:var(--blue);background:#eaf3ff;padding:6px 10px;border-radius:999px;white-space:nowrap}
.dh-chat-body{padding:18px 16px 14px;min-height:0;overflow-y:auto;display:flex;flex-direction:column;background:linear-gradient(180deg,#f7fbff,#eef6ff)}
.dh-chat-time{align-self:center;font-size:11px;color:#8aa1bb;background:#fff;border-radius:999px;padding:5px 10px;margin-bottom:14px}
.dh-chat-history{display:flex;flex-direction:column;gap:12px}
.dh-chat-msg{width:fit-content;max-width:86%;background:#fff;border:1px solid #e2ecf7;border-radius:14px 14px 14px 3px;padding:11px 13px;color:#31455f;line-height:1.65;font-size:13px;box-shadow:0 8px 18px rgba(25,78,140,.08)}
.dh-chat-msg.user{align-self:flex-end;background:var(--blue);border-color:var(--blue);color:#fff;border-radius:14px 14px 3px 14px;margin-top:12px}
.dh-chat-msg.reply{margin-top:12px}
.dh-chat-wait{font-size:11px;color:#7890aa;margin-top:10px}
.dh-chat-replies{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:18px}
.dh-chat-replies button{border:0;background:#fff;color:var(--blue);font-weight:700;font-size:12px;padding:8px 10px;border-radius:999px;cursor:pointer}
.dh-chat-input{display:grid;grid-template-columns:1fr 42px;gap:8px;padding:12px;background:#fff;border-top:1px solid #e5eef8}
.dh-chat-input input{border:1px solid #c8d8ea;border-radius:18px;height:38px;padding:0 14px;outline:none}
.dh-chat-input button{border:0;border-radius:50%;background:var(--blue);color:#fff;font-size:18px;font-weight:800;cursor:pointer}
.dh-article{display:block;grid-column:1/-1}
.dh-article-cover{height:260px;background:linear-gradient(135deg,var(--blue2),var(--blue));background-size:cover;background-position:center;margin-bottom:18px}
.dh-article-meta{display:flex;gap:10px;flex-wrap:wrap;color:var(--mid);font-size:12px;margin-bottom:14px}
.dh-article-body{font-size:14px;line-height:2;color:var(--mid);white-space:pre-line}
.dh-article-body.nice{white-space:normal;color:#334155;font-size:15px;line-height:1.9;max-width:980px}
.dh-article-body.nice p{margin:0 0 14px}
.dh-article-body.nice p:first-child{font-size:16px;color:var(--ink2);font-weight:600}
.case-detail{display:grid;gap:18px}
.case-hero{height:280px;background:linear-gradient(135deg,var(--blue2),var(--blue));background-size:cover;background-position:center;position:relative;overflow:hidden}
.case-hero::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,24,52,.05),rgba(4,24,52,.48))}
.case-lead{border-left:4px solid var(--blue);background:#f3f8ff;color:#46637f;font-size:15px;line-height:1.9;padding:18px 22px;margin:0}
.case-body{display:grid;gap:16px;color:#334155}
.case-section{border:1px solid #e1ebf6;background:#fff;padding:22px 24px}
.case-section h4{font-family:var(--serif);font-size:22px;line-height:1.35;color:var(--blue2);margin:0 0 12px}
.case-section p{font-size:15px;line-height:1.95;color:#4c6682;margin:0 0 12px}
.case-section p:last-child{margin-bottom:0}
.case-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.case-fact{background:#f7fbff;border:1px solid #dbe9f8;padding:14px 16px}
.case-fact span{display:block;font-size:11px;color:#6a8198;margin-bottom:5px}
.case-fact strong{font-size:15px;color:var(--blue2)}
.dh-article-list{display:grid;gap:10px;grid-column:1/-1}
.dh-article-list a{display:grid;grid-template-columns:86px 1fr;gap:12px;align-items:center;border:1px solid var(--line);padding:10px;background:#f8fbff}
.dh-article-thumb{height:64px;background:var(--blue-lt);background-size:cover;background-position:center}
.dh-article-title{font-weight:800;color:var(--blue2);line-height:1.5}
.dh-article-small{font-size:12px;color:var(--mid);margin-top:4px}
.article-page{background:var(--sky);min-height:100vh;color:var(--ink)}
.article-page-header{background:linear-gradient(135deg,#0b3671,#185fc0);color:#fff;padding:12px 5vw;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:74px;box-shadow:0 8px 22px rgba(8,35,75,.12)}
.article-page-brand{display:flex;align-items:center;gap:14px;font-weight:800;color:#fff}
.article-page-brand-mark{width:50px;height:50px;background:#fff;display:grid;place-items:center;flex-shrink:0;box-shadow:inset 0 0 0 1px rgba(255,255,255,.35)}
.article-page-brand-mark img{width:100%;height:100%;object-fit:contain;padding:7px}
.article-page-brand-mark span{color:var(--blue2);font-family:var(--en);font-weight:900;font-size:18px}
.article-page-brand-name{font-family:var(--serif);font-size:24px;line-height:1.1;letter-spacing:.03em}
.article-page-brand-name small{display:block;margin-top:5px;font-family:var(--en);font-size:11px;letter-spacing:.23em;color:rgba(255,255,255,.72);font-weight:500}
.article-page-home{color:#fff;border:1px solid rgba(255,255,255,.45);padding:8px 16px;font-weight:700}
.article-page-main{max-width:1080px;margin:0 auto;padding:48px 24px 72px}
.article-page-kicker{font-family:var(--en);letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-weight:800;font-size:12px;margin-bottom:16px}
.article-page-title{font-family:var(--serif);font-size:42px;line-height:1.22;color:var(--blue2);margin-bottom:18px}
.article-page-summary{font-size:18px;line-height:1.9;color:#4a6880;background:#eef7ff;border-left:4px solid var(--blue);padding:18px 22px;margin:0 0 24px}
.article-page-meta{display:flex;flex-wrap:wrap;gap:12px 22px;color:var(--mid);font-size:14px;border-bottom:1px solid var(--rule);padding-bottom:22px;margin-bottom:28px}
.article-page-cover{height:430px;background:linear-gradient(135deg,#0d47a1,#1565c0);background-size:cover;background-position:center;margin-bottom:34px}
.article-page-body{background:#fff;border-top:4px solid var(--accent);padding:38px 44px;font-size:17px;line-height:2;color:#24384b}
.article-page-body p{margin:0 0 18px}
.article-page-body h1,.article-page-body h2,.article-page-body h3{font-family:var(--serif);color:var(--blue2);line-height:1.35;margin:30px 0 14px}
.article-page-body h1{font-size:34px}.article-page-body h2{font-size:28px}.article-page-body h3{font-size:22px}
.article-page-body img{max-width:100%;height:auto;display:block;margin:24px auto}
.article-page-source{background:#fff;margin-top:18px;border:1px solid var(--rule);padding:20px 24px;color:#4a6880;line-height:1.8}
.article-page-source strong{color:var(--ink2)}
.article-page-actions{display:flex;gap:14px;margin-top:28px}
.article-page-actions a{background:var(--blue);color:#fff;padding:12px 22px;font-weight:800}
.article-page-actions a.ghost{background:#eaf4ff;color:var(--blue2)}
@media(max-width:760px){.article-page-header{padding:10px 16px;min-height:66px}.article-page-brand-mark{width:42px;height:42px}.article-page-brand-name{font-size:18px}.article-page-brand-name small{font-size:9px;letter-spacing:.14em}.article-page-home{padding:7px 10px}.article-page-main{padding:32px 18px 56px}.article-page-title{font-size:30px}.article-page-cover{height:240px}.article-page-body{padding:24px 20px;font-size:15px}.article-page-summary{font-size:15px}.article-page-actions{flex-direction:column}}
.site-map-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.site-map-grid a{display:block;padding:14px;border:1px solid var(--line);color:var(--blue2);font-weight:700;background:#f8fbff}
.site-map-grid a:hover{border-color:var(--blue);color:var(--blue)}
body.en-mode .zh-only{display:none}
body.en-mode .en-only{display:inline}
.en-only{display:none}
@media(max-width:760px){.product-catalog-grid{grid-template-columns:1fr}.product-catalog-head{align-items:flex-start;flex-direction:column}.dh-modal{padding:12px}.dh-modal.service-only{justify-content:center;padding:12px}.dh-modal.service-only .dh-dialog{width:100%;max-height:94vh}.dh-dialog{width:100%;max-height:92vh}.dh-dialog-head{padding:16px 18px}.dh-dialog-body,.dh-product-detail,.dh-service-panel{grid-template-columns:1fr}.dh-dialog-body{padding:18px}.site-map-grid,.dh-form-row,.dh-param-grid,.official-panel,.qr-grid{grid-template-columns:1fr}.dh-detail-img{min-height:210px}.dh-dialog-actions{flex-wrap:wrap}.dh-dialog-actions a,.dh-dialog-actions button{flex:1 1 132px}.offer-track .offer-card{flex-basis:100%}.hd-phone{display:none}.dh-service-side,.dh-service-form{padding:24px}.dh-chat-box{height:min(680px,calc(100vh - 116px))}}

/* ════════ REVEAL ════════ */
.rv{opacity:1;transform:translateY(0);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:translateY(0)}
.rv-d1{transition-delay:.1s}.rv-d2{transition-delay:.2s}.rv-d3{transition-delay:.3s}

/* ════════ RESPONSIVE ════════ */
/* 超宽屏：只在空间充足时提升字号 */
@media(min-width:2300px){
  .hero-h1{font-size:76px}
  .hero-sub{font-size:21px}
}
@media(min-width:1800px) and (max-width:2299px){
  .hero-h1{font-size:68px}
  .hero-sub{font-size:19px}
}
/* 中等桌面：收紧导航与主视觉，避免相互覆盖 */
@media(max-width:1799px){
  .hd-info-inner,.hd-main-inner{padding-left:32px;padding-right:32px}
  .nav{margin-left:20px}
  .logo-cn{font-size:18px}
  .logo{margin-right:10px}
  .logo-divider{margin:0 9px}
  .nav-item>a{font-size:18px;padding-left:9px;padding-right:9px}
  .nav-item>a::after{left:10px;right:10px}
  .hd-phone{display:flex;font-size:21px;padding:0 12px;gap:8px}
  .hd-phone svg{width:20px;height:20px}
  .hd-btn{font-size:16px;padding:11px 18px;margin-left:8px}
  .hero-h1{font-size:52px}
  .hero-sub{font-size:16px}
}
@media(max-width:1680px){
  .hd-info-inner,.hd-main-inner{padding-left:24px;padding-right:24px}
  .logo-emblem{width:38px;height:38px}
  .logo-cn{font-size:17px}
  .logo-en{font-size:7.5px;letter-spacing:.1em}
  .logo{gap:8px;margin-right:8px}
  .logo-divider{margin:0 8px}
  .logo-tagline{font-size:10px}
  .logo-tagline strong{font-size:11px}
  .nav-item>a{font-size:17px;padding-left:7px;padding-right:7px}
  .nav-item>a::after{left:8px;right:8px}
  .hd-right{margin-left:auto}
  .hd-phone{font-size:20px;padding:0 10px;gap:7px}
  .hd-phone svg{width:19px;height:19px}
  .hd-btn{font-size:15px;padding:10px 14px;margin-left:6px}
}
@media(max-width:1560px){
  .hd-info-inner,.hd-main-inner{padding-left:18px;padding-right:18px}
  .logo-cn{font-size:16px}
  .nav-item>a{font-size:16px;padding-left:6px;padding-right:6px}
  .nav-item>a::after{left:6px;right:6px}
  .hd-phone{font-size:19px;padding:0 8px}
  .hd-btn{font-size:14px;padding:9px 12px;margin-left:5px}
}
@media(max-width:1450px){
  .logo-tagline,.logo-divider{display:none}
  .nav-item>a{font-size:15px;padding-left:5px;padding-right:5px}
  .nav-item>a::after{left:5px;right:5px}
  .hd-phone{font-size:17px;padding:0 7px}
  .hero-h1{font-size:46px}
  .hero-sub{font-size:15px}
  .hero-txt-inner{padding-left:22vw;padding-right:12vw}
}
/* 1320px 以下：保持导航可读，收紧 Logo/间距 */
@media(max-width:1320px){
  .logo-tagline{display:none}
  .logo-divider{display:none}
  .logo-cn{font-size:16px}
  .logo-en{font-size:7.5px}
  .logo-emblem{width:34px;height:34px}
  .logo{gap:6px;margin-right:6px}
  .hd-main-inner{padding-left:12px;padding-right:12px}
  .hd-btn{display:flex;font-size:13px;padding:8px 10px;margin-left:4px}
  .hd-phone{font-size:16px;padding:0 6px}
  .hero-h1{font-size:42px}
  .hero-sub{font-size:14px}
}
/* 1180px 以下：隐藏 Logo 英文，不再压低导航字号 */
@media(max-width:1180px){
  .logo-en{display:none}
  .nav-item>a{padding:0 4px;font-size:13px}
  .nav-item>a::after{left:4px;right:4px}
  .logo{margin-right:6px}
  .hero-h1{font-size:38px}
  .hero-sub{font-size:13px;max-width:600px}
  .hero-txt-inner{padding-left:16vw;padding-right:8vw}
}
/* 1100px 以下 */
@media(max-width:1100px){
  .main-grid{grid-template-columns:1fr}
  .sidebar{display:none}
  .prod-grid{grid-template-columns:1fr 1fr}
  .adv-grid{grid-template-columns:1fr 1fr}
  .about-inner{grid-template-columns:1fr}
  .cnc-layout{grid-template-columns:1fr}
  .mat-row,.mat-row:nth-child(even){grid-template-columns:1fr}
  .mat-row:nth-child(even) .mat-img{order:0}
  .mat-img{height:220px}
  .mkt-inner{grid-template-columns:1fr}
  .news-inner{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px}
  .honor-grid{grid-template-columns:1fr 1fr}
  .nav-drop.wide{left:0;transform:translateY(-8px)}
  .nav-item:hover .nav-drop.wide{transform:translateY(0)}
}
/* 768px 以下 */
@media(max-width:768px){
  .nav{display:none}
  .hd-info-left{display:none}
  .hd-tel-info{display:none}
  .prod-grid{grid-template-columns:1fr}
  .honor-grid{grid-template-columns:1fr}
  .feat-inner{grid-template-columns:1fr;padding:0 clamp(28px,4vw,72px)}
  .feat-divider{display:none}
  .feat-block{padding:0}
  .cnc-process{grid-template-columns:1fr 1fr}
  .about-imgs{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .case-card{flex:0 0 80%}
  .hd-main-inner{padding:0 16px}
  .hd-info-inner{padding:6px 16px}
  .hero-h1{font-size:32px}
  .hero-sub{font-size:13px}
  .hero-txt-inner{padding:0 28px}
}