/* ============================================================
   汉驰测控 VI 色板（取自公司LOGO定稿与产品宣传手册）
   主蓝 #043779（藏青）· 深蓝 #161C59 · 手册底色 #02060F
   ============================================================ */
:root{
  --g-900:#02060f; --g-800:#041028; --g-700:#161c59; --g-600:#043779;
  --g-500:#0d4e9e; --g-400:#1877d4; --g-300:#5aa9f0; --g-200:#a9d2f7;
  --g-150:#cfe4fa; --g-050:#eaf3fd; --g-025:#f5f9fe;
  --ink:#0b1220; --ink-2:#26364f; --ink-3:#5a6b85; --line:#d6e4f2;
  --white:#fff; --bg:#f6f9fc;
  --accent:#00c2ff;            /* 科技青点缀色（仪表/数据感） */
  --sh:0 6px 24px rgba(4,55,121,.08);
  --sh-lg:0 18px 48px rgba(4,55,121,.14);
  --r:14px; --max:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ============ 顶栏 ============ */
.topbar{background:var(--g-900);color:var(--g-200);font-size:13px;padding:7px 0}
.topbar .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.topbar span b{color:var(--g-300);font-weight:600}
.topbar a:hover{color:var(--g-300)}
header.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:.3s}
header.nav.scrolled{box-shadow:0 2px 20px rgba(4,55,121,.08)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:11px}
.logo-mark{width:40px;height:40px;border-radius:11px;
  background:linear-gradient(135deg,var(--g-500),var(--g-700));
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 4px 14px rgba(13,78,158,.35);position:relative;overflow:hidden}
/* 正式品牌 LOGO（来自公司LOGO定稿） */
.brand-logo{display:block;object-fit:contain}
.brand-logo.nav-logo{height:44px;width:auto}
.brand-logo.foot-logo{height:52px;width:auto}
.brand-logo.side-logo{height:34px;width:auto}
.brand-logo.favicon-logo{height:100%;width:100%;object-fit:contain;padding:10%}
.fbrand-txt{margin-top:16px}
.fbrand-txt b{display:block;color:#fff;font-size:16px;font-weight:700;letter-spacing:.5px}
.fbrand-txt i{font-style:normal;font-size:10px;color:var(--g-400);letter-spacing:2.5px}
.logo-mark::after{content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.35) 50%,transparent 70%)}
.logo-txt b{display:block;font-size:17px;letter-spacing:.5px;line-height:1.2}
.logo-txt i{font-style:normal;font-size:10px;color:var(--ink-3);letter-spacing:2.5px}
.menu{display:flex;gap:30px;align-items:center}
.menu a{font-size:15px;color:var(--ink-2);position:relative;padding:4px 0;font-weight:500}
.menu a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--g-500);transition:.3s}
.menu a:hover,.menu a.on{color:var(--g-600)}
.menu a:hover::after,.menu a.on::after{width:100%}
.btn{background:linear-gradient(135deg,#0d4e9e 0%,#043779 55%,#161c59 100%);color:#fff;
  padding:10px 22px;border-radius:40px;font-size:14px;font-weight:600;
  border:none;cursor:pointer;transition:.3s;display:inline-block;white-space:nowrap;
  box-shadow:0 4px 14px rgba(4,55,121,.28),0 0 0 1px rgba(90,169,240,.18) inset}
.btn:hover{transform:translateY(-2px);
  box-shadow:0 8px 26px rgba(4,55,121,.45),0 0 22px rgba(0,194,255,.22)}
.btn.ghost{background:transparent;border:1px solid var(--g-400);color:var(--g-600);box-shadow:none}
.btn.ghost:hover{background:var(--g-050);box-shadow:0 4px 14px rgba(4,55,121,.12)}
.btn.sm{padding:7px 16px;font-size:13px}
.btn.lg{padding:14px 34px;font-size:16px}
.nav-toggle{display:none;background:none;border:none;font-size:24px;color:var(--g-700);cursor:pointer}

/* ============ 网格背景 ============ */
.grid-bg{position:relative;overflow:hidden}
.grid-bg::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;pointer-events:none}

/* ============ HERO ============ */
/* 底图取自公司产品宣传手册封面的深蓝科技底 */
.hero{background:#02060f url("/img/bg/hero.webp") right center/cover no-repeat;
  color:#fff;padding:100px 0 112px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;width:760px;height:760px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,119,212,.26),transparent 68%);
  top:-240px;right:-180px;pointer-events:none}
.hero::before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,194,255,.14),transparent 70%);
  bottom:-200px;left:-160px;pointer-events:none}
.hero .wrap{position:relative;z-index:2}
/* 左侧压暗，保证文字对比度 */
.hero .wrap::before{content:"";position:absolute;inset:-110px -60vw;
  background:linear-gradient(100deg,rgba(2,6,15,.94) 0%,rgba(2,6,15,.72) 34%,
    rgba(2,6,15,.10) 62%,transparent 100%);
  pointer-events:none;z-index:-1}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;
  border:1px solid rgba(0,194,255,.42);border-radius:40px;font-size:13px;
  color:var(--g-200);background:rgba(0,120,190,.16);margin-bottom:22px;
  backdrop-filter:blur(4px)}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--accent);
  animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(0,194,255,.7)}50%{box-shadow:0 0 0 8px rgba(0,194,255,0)}}
.hero h1{font-size:54px;line-height:1.14;font-weight:800;letter-spacing:-.5px;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--g-200);
  background:linear-gradient(120deg,#7fe0ff,var(--g-300));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-lead{font-size:17px;color:rgba(255,255,255,.82);max-width:540px;margin-bottom:32px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-btns .btn.ghost{color:#fff;border-color:rgba(255,255,255,.4)}
.hero-btns .btn.ghost:hover{background:rgba(255,255,255,.12)}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:54px}
.hero-stats > div{position:relative;padding-left:18px}
.hero-stats > div::before{content:"";position:absolute;left:0;top:6px;bottom:4px;width:3px;
  border-radius:2px;background:linear-gradient(180deg,var(--accent),rgba(0,194,255,0))}
/* em 承载数字（主视觉），span 上的裸文本承载单位（次级） */
.hero-stats div span{display:flex;align-items:baseline;gap:4px;line-height:1;
  letter-spacing:-.5px;color:rgba(255,255,255,.72);font-size:16px;font-weight:600}
.hero-stats div em{font-style:normal;font-size:42px;font-weight:800;color:#fff;
  font-family:"DIN Alternate","Bahnschrift","Segoe UI",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;letter-spacing:-1px;
  text-shadow:0 2px 18px rgba(0,194,255,.35)}
.hero-stats div i{display:block;font-style:normal;margin-top:9px;font-size:13px;
  color:rgba(255,255,255,.6);letter-spacing:1.5px}

/* 主视觉舞台：科技方框 + 产品悬浮 */
.hero-visual{position:relative;aspect-ratio:1;display:grid;place-items:center}
.hero-stage{position:absolute;inset:6%;border-radius:26px;
  border:1px solid rgba(0,194,255,.18);
  background:
    linear-gradient(rgba(0,194,255,.045) 1px,transparent 1px) 0 0/42px 42px,
    linear-gradient(90deg,rgba(0,194,255,.045) 1px,transparent 1px) 0 0/42px 42px,
    radial-gradient(circle at 50% 46%,rgba(24,119,212,.24),rgba(2,6,15,.10) 62%,transparent 78%);
  overflow:hidden}
.hero-stage canvas{position:absolute;inset:0;width:100%;height:100%}
.hero-stage::after{content:"";position:absolute;inset:0;border-radius:26px;
  box-shadow:inset 0 0 60px rgba(2,6,15,.62);pointer-events:none}
/* 四角科技角标 */
.hero-stage .cs{position:absolute;width:22px;height:22px;pointer-events:none;z-index:4}
.hero-stage .cs::before,.hero-stage .cs::after{content:"";position:absolute;background:var(--accent);opacity:.8}
.hero-stage .cs::before{width:100%;height:2px}
.hero-stage .cs::after{width:2px;height:100%}
.hero-stage .cs.tl{top:-1px;left:-1px}
.hero-stage .cs.tr{top:-1px;right:-1px;transform:scaleX(-1)}
.hero-stage .cs.bl{bottom:-1px;left:-1px;transform:scaleY(-1)}
.hero-stage .cs.br{bottom:-1px;right:-1px;transform:scale(-1)}
.hero-sensor{position:relative;z-index:3;width:82%;height:82%;
  display:grid;place-items:center;pointer-events:none}
.hero-sensor img{width:100%;height:100%;object-fit:contain;
  filter:drop-shadow(0 20px 44px rgba(0,0,0,.62)) drop-shadow(0 0 54px rgba(0,194,255,.32));
  animation:float 6s ease-in-out infinite}
/* 悬浮型号标签 */
.hero-tag{position:absolute;z-index:5;background:rgba(3,20,46,.82);
  border:1px solid rgba(0,194,255,.42);backdrop-filter:blur(6px);
  color:var(--g-200);padding:6px 13px;border-radius:9px;font-size:12px;white-space:nowrap;
  box-shadow:0 8px 26px rgba(0,0,0,.4);animation:float 4.4s ease-in-out infinite}
.hero-tag b{color:#fff;font-weight:700}
.hero-tag::before{content:"";position:absolute;width:5px;height:5px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 8px var(--accent)}
.hero-tag.t1{top:9%;left:-3%}
.hero-tag.t2{top:47%;right:-4%;animation-delay:.8s}
.hero-tag.t3{bottom:12%;left:4%;animation-delay:1.6s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ============ 产品体系辐射图（吸收手册 p3） ============ */
.arch{position:relative;overflow:hidden;padding:86px 0 92px;
  background:radial-gradient(ellipse at 50% 44%,#0a2348 0%,#041028 46%,#02060f 100%)}
.arch .wrap{position:relative;z-index:2}
.arch .sec-head .sec-tag{color:var(--g-300)}
.arch .sec-head .sec-tag::after{display:none}
.arch .sec-head h2{color:#fff}
.arch .sec-head h2 em{background:linear-gradient(120deg,#7fe0ff,var(--g-300));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent}
.arch .sec-head p{color:rgba(255,255,255,.72)}

/* 中央核心 */
.arch-core{width:152px;height:152px;border-radius:50%;
  display:grid;place-items:center;text-align:center;position:relative;z-index:5;
  background:radial-gradient(circle at 50% 40%,#1170c4,#062a58 72%);
  border:2px solid var(--accent);
  box-shadow:0 0 0 14px rgba(0,194,255,.06),0 0 62px rgba(0,194,255,.34);
  animation:corePulse 3.4s ease-in-out infinite}
.arch-core strong{display:block;font-size:23px;font-weight:800;color:#fff;line-height:1.24}
.arch-core span{font-size:12px;color:var(--g-200);letter-spacing:1.4px}
@keyframes corePulse{0%,100%{box-shadow:0 0 0 14px rgba(0,194,255,.06),0 0 58px rgba(0,194,255,.30)}
  50%{box-shadow:0 0 0 24px rgba(0,194,255,.02),0 0 88px rgba(0,194,255,.48)}}

/* 同心环：中心对齐 arch-core（stage 内顶部 76px） */
.arch-ring{position:absolute;left:50%;top:76px;transform:translate(-50%,-50%);
  border-radius:50%;pointer-events:none;z-index:1}
.arch-ring.r1{width:300px;height:300px;border:1px dashed rgba(0,194,255,.22)}
.arch-ring.r2{width:530px;height:530px;border:1px solid rgba(0,194,255,.12)}
.arch-ring.r3{width:780px;height:780px;border:1px dotted rgba(0,194,255,.10)}

.arch-svg{position:absolute;left:0;top:0;width:100%;height:100%;z-index:3;pointer-events:none}

/* 卡片：两排环绕核心 */
.arch-list{position:relative;z-index:4;display:grid;
  grid-template-columns:repeat(4,1fr);gap:64px 16px;margin-top:30px}
.arch-item{text-align:center;padding:17px 14px;border-radius:15px;
  background:rgba(6,32,70,.74);border:1px solid rgba(0,194,255,.26);
  backdrop-filter:blur(6px);transition:.34s;position:relative}
.arch-item:hover{transform:translateY(-5px);border-color:var(--accent);
  background:rgba(9,54,110,.88);box-shadow:0 16px 36px rgba(0,0,0,.46)}
.arch-item b{display:block;font-size:15.5px;color:#fff;font-weight:700;margin-bottom:6px}
.arch-item span{font-size:12px;color:var(--g-300);letter-spacing:.7px}
.arch-item.sp{border-style:dashed;background:rgba(4,26,58,.68)}
.arch-item.sp b{color:var(--g-200)}

/* ============ 核心指标超大数字带（吸收手册 p13） ============ */
.kpi-band{position:relative;overflow:hidden;padding:74px 0;
  background:linear-gradient(120deg,#043779 0%,#0d4e9e 44%,#1877d4 100%);color:#fff}
.kpi-band::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:52px 52px;pointer-events:none}
.kpi-band::after{content:"";position:absolute;width:720px;height:720px;border-radius:50%;
  right:-260px;top:-320px;pointer-events:none;
  background:radial-gradient(circle,rgba(0,194,255,.30),transparent 66%)}
.kpi-band .wrap{position:relative;z-index:2}
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.kpi{text-align:center;padding:22px 12px;border-radius:16px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  backdrop-filter:blur(6px);transition:.34s}
.kpi:hover{background:rgba(255,255,255,.13);transform:translateY(-5px);
  box-shadow:0 18px 40px rgba(2,20,48,.34)}
.kpi b{display:block;font-size:46px;font-weight:800;line-height:1.05;letter-spacing:-1.5px;
  font-family:"DIN Alternate","Bahnschrift","Segoe UI",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;text-shadow:0 3px 16px rgba(0,40,90,.42)}
.kpi b i{font-style:normal;font-size:22px;font-weight:700;margin-left:3px;opacity:.9}
.kpi span{display:block;margin-top:9px;font-size:14px;color:rgba(255,255,255,.86);letter-spacing:1.4px}

/* ============ 实景行业大图区 ============ */
.scene{position:relative;overflow:hidden;padding:96px 0;
  background:#041028 url("/img/bg/scene-pump.webp") center/cover no-repeat;
  box-shadow:inset 0 0 220px rgba(2,6,15,.7)}
.scene::before{content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(2,6,15,.88) 0%,rgba(2,6,15,.66) 32%,
    rgba(2,6,15,.26) 66%,rgba(2,6,15,.12) 100%)}
.scene .wrap{position:relative;z-index:2}
.scene .sec-head{text-align:left;max-width:620px;margin:0 0 38px}
.scene .sec-head .sec-tag{color:var(--g-300)}
.scene .sec-head .sec-tag::after{display:none}
.scene .sec-head h2{color:#fff;font-size:36px}
.scene .sec-head h2 em{background:linear-gradient(120deg,#7fe0ff,var(--g-300));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent}
.scene .sec-head p{color:rgba(255,255,255,.78)}
.scene-inds{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.scene-ind{padding:18px 16px;border-radius:14px;
  background:rgba(3,20,46,.58);border:1px solid rgba(0,194,255,.26);
  backdrop-filter:blur(5px);transition:.32s}
.scene-ind:hover{transform:translateY(-5px);border-color:var(--accent);
  background:rgba(5,32,66,.8);box-shadow:0 16px 34px rgba(0,0,0,.44)}
.scene-ind b{display:block;font-size:18.5px;color:#fff;font-weight:700;letter-spacing:.5px}
.scene-ind span{display:block;margin-top:6px;font-size:12.5px;color:var(--g-200);line-height:1.55}
.scene-foot{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap;align-items:center;
  font-size:13.5px;color:rgba(255,255,255,.6)}
.scene-foot .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 8px var(--accent)}

/* ============ 通用区块 ============ */
section{padding:86px 0}
.sec-head{text-align:center;max-width:760px;margin:0 auto 52px}
.sec-tag{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:700;
  letter-spacing:3px;color:var(--g-500);text-transform:uppercase;margin-bottom:12px}
.sec-tag::before,.sec-tag::after{content:"";width:26px;height:1px;
  background:linear-gradient(90deg,transparent,var(--g-400))}
.sec-tag::after{background:linear-gradient(90deg,var(--g-400),transparent)}
.sec-head h2{font-size:38px;font-weight:800;letter-spacing:-.5px;margin-bottom:14px;color:var(--ink)}
.sec-head h2 em{font-style:normal;
  background:linear-gradient(120deg,var(--g-600),var(--g-400));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent}
.sec-head p{color:var(--ink-3);font-size:16px}
.sec-head.left{text-align:left;margin-left:0}
.sec-head.left .sec-tag::after{display:none}

/* 卡片科技角标 */
.tech-corner{position:relative}
.tech-corner::after{content:"";position:absolute;right:0;bottom:0;width:22px;height:22px;
  background:linear-gradient(225deg,var(--g-300) 0 50%,transparent 50%);
  border-bottom-right-radius:var(--r);opacity:.55;transition:.35s}
.tech-corner:hover::after{width:34px;height:34px;opacity:1}

.light{background:var(--white)}
.dark{background:linear-gradient(155deg,#02060f 0%,#041028 42%,#062246 76%,#0a3160 100%);color:#fff}
.dark .sec-head h2{color:#fff}
.dark .sec-head h2 em{background:linear-gradient(120deg,var(--g-300),#00c2ff);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent}
.dark .sec-head p{color:rgba(255,255,255,.7)}
.dark .sec-tag{color:var(--g-300)}

/* ============ 优势 ============ */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.adv{background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  padding:32px 28px;transition:.35s;position:relative;overflow:hidden}
.adv::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,#00c2ff,var(--g-400),var(--g-600));
  transform:scaleX(0);transition:.35s}
.adv:hover{transform:translateY(-6px);box-shadow:var(--sh-lg),0 0 26px rgba(24,119,212,.14);
  border-color:var(--g-200)}
.adv:hover::before{transform:scaleX(1)}
.adv-ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,#eaf3fd,#cfe4fa);color:var(--g-600);
  margin-bottom:18px;box-shadow:0 0 0 1px rgba(24,119,212,.14)}
.adv:hover .adv-ico{background:linear-gradient(135deg,var(--g-500),var(--g-600));color:#fff;
  box-shadow:0 6px 18px rgba(4,55,121,.3)}
.adv h3{font-size:18px;font-weight:700;margin-bottom:10px}
.adv p{color:var(--ink-3);font-size:14.5px}

/* ============ 产品卡 ============ */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.prod{background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;transition:.35s;display:flex;flex-direction:column;position:relative}
.prod:hover{transform:translateY(-7px);
  box-shadow:var(--sh-lg),0 0 30px rgba(0,194,255,.20);border-color:var(--g-300)}
/* 产品图为整幅深蓝卡图，卡片内只做裁切与悬停放大，不叠网格
   绝大多数卡图是正方形（1:1），而卡片可视区原本是横向的 270×200，
   object-fit:cover 会把上下各裁掉 35px → 产品显示不全（伍先生 23:26 反馈）。
   修法：容器改为正方形（aspect-ratio:1/1），图用 contain 完整呈现，
   方图正好铺满、不裁切也不留白；横图（燃气轮机等）由 JS 加 .wide 类单独处理。 */
.prod-vis{aspect-ratio:1/1;min-height:0;position:relative;overflow:hidden;
  background:#041028;display:grid;place-items:center}
.prod-vis.wide{aspect-ratio:auto;height:200px}
.prod-vis svg{width:110px;height:110px;opacity:.95;transition:.5s}
.prod-vis .prod-photo{width:100%;height:100%;object-fit:contain;object-position:center;
  transition:.55s cubic-bezier(.2,.7,.3,1)}
/* 横图卡片：容器保持 200px 高，图用 cover 铺满，避免上下留白 */
.prod-vis.wide .prod-photo{object-fit:cover}
.prod-vis .prod-photo.cut{object-fit:contain;padding:16px;
  filter:drop-shadow(0 10px 24px rgba(0,0,0,.5))}
.prod:hover .prod-vis svg{transform:scale(1.08) rotate(-3deg)}
.prod:hover .prod-vis .prod-photo{transform:scale(1.07)}
/* 悬停青色扫光 */
.prod-vis::after{content:"";position:absolute;inset:0;pointer-events:none;z-index:2;
  background:linear-gradient(105deg,transparent 38%,rgba(0,194,255,.18) 50%,transparent 62%);
  transform:translateX(-110%);transition:transform .75s}
.prod:hover .prod-vis::after{transform:translateX(110%)}
/* 产品详情大图：卡图为方形，用 contain 完整呈现（含角标与型号标签）
   父容器是 grid + place-items:center，height:100% 在此会退化成 auto，
   图片按原始比例撑开后溢出被裁。这里改为：宽度撑满容器（方形图即等高），
   容器用 aspect-ratio 跟随，overflow 保留给角标装饰。 */
.pdetail-vis{width:100%;height:auto;max-height:560px;object-fit:contain;
  display:block;margin:0 auto;border-radius:10px}
.pdetail-vis.svgfx{width:65%;height:auto}
.prod-tag{position:absolute;top:12px;left:12px;background:var(--g-400);color:#03142e;
  font-size:11px;font-weight:700;padding:3px 10px;border-radius:20px;z-index:3}
.prod-cat{position:absolute;top:12px;right:12px;background:rgba(2,6,15,.72);
  color:var(--g-300);font-size:11px;padding:3px 10px;border-radius:20px;z-index:3;
  border:1px solid rgba(0,194,255,.36);backdrop-filter:blur(4px)}
.prod-body{padding:22px;flex:1;display:flex;flex-direction:column}
.prod-body h3{font-size:17px;font-weight:700;margin-bottom:6px}
.prod-model{font-size:12.5px;color:var(--g-500);font-weight:600;margin-bottom:12px;
  font-family:"Consolas",monospace;letter-spacing:.3px}
.prod-body p{font-size:14px;color:var(--ink-3);flex:1;margin-bottom:16px}
.prod-link{color:var(--g-600);font-size:14px;font-weight:600;display:inline-flex;
  align-items:center;gap:5px}
.prod-link:hover{gap:10px}

/* ============ 行业 ============ */
.ind-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ind{background:rgba(255,255,255,.06);border:1px solid rgba(90,169,240,.22);
  border-radius:var(--r);padding:26px 24px;transition:.35s}
.ind:hover{background:rgba(24,119,212,.13);transform:translateY(-5px);
  border-color:var(--g-400)}
.ind h3{font-size:19px;font-weight:700;margin-bottom:10px;display:flex;
  align-items:center;gap:10px}
.ind h3 span{width:34px;height:34px;border-radius:10px;background:rgba(90,169,240,.16);
  display:grid;place-items:center;color:var(--g-300);font-size:17px}
.ind p{font-size:13.5px;color:rgba(255,255,255,.7);margin-bottom:8px}
.ind em{font-style:normal;font-size:13px;color:var(--g-300);font-weight:600}

/* ============ 测点表 ============ */
.tbl{width:100%;border-collapse:collapse;background:var(--white);
  border-radius:var(--r);overflow:hidden;box-shadow:var(--sh)}
.tbl th{background:linear-gradient(135deg,var(--g-700),var(--g-500));color:#fff;
  padding:14px 20px;text-align:left;font-size:14px;font-weight:600}
.tbl td{padding:14px 20px;border-bottom:1px solid var(--line);font-size:14.5px}
.tbl tr:last-child td{border-bottom:none}
.tbl tr:hover td{background:var(--g-025)}
.tbl td:first-child{font-weight:600;color:var(--g-700);white-space:nowrap}

/* ============ 品质 ============ */
.qa-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.qa{background:rgba(255,255,255,.05);border:1px solid rgba(90,169,240,.2);
  border-radius:var(--r);padding:28px 24px;text-align:center;transition:.35s}
.qa:hover{transform:translateY(-5px);background:rgba(24,119,212,.12)}
.qa b{display:block;font-size:28px;color:var(--g-300);font-weight:800;
  font-family:"Consolas",monospace;margin-bottom:6px;letter-spacing:-.5px}
.qa i{font-style:normal;display:block;font-size:15px;font-weight:600;margin-bottom:4px}
.qa span{font-size:13px;color:rgba(255,255,255,.6)}

/* ============ 客户 ============ */
.cus-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cus{background:var(--white);border:1px solid var(--line);border-radius:12px;
  padding:22px 20px;transition:.3s}
.cus:hover{border-color:var(--g-400);box-shadow:var(--sh);transform:translateY(-4px)}
.cus b{display:block;font-size:16.5px;font-weight:700;margin-bottom:4px}
.cus i{font-style:normal;font-size:12.5px;color:var(--g-500);font-weight:600}
.cus span{display:block;font-size:13px;color:var(--ink-3);margin-top:7px}

/* ============ 新闻 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news{background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;transition:.35s;display:flex;flex-direction:column}
.news:hover{transform:translateY(-6px);box-shadow:var(--sh-lg)}
.news-cover{height:160px;background:linear-gradient(135deg,#02060f,#043779);
  position:relative;display:grid;place-items:center;color:rgba(255,255,255,.14)}
.news-cover svg{width:64px;height:64px}
.news-body{padding:24px;flex:1;display:flex;flex-direction:column}
.news-meta{display:flex;gap:12px;font-size:12.5px;color:var(--ink-3);margin-bottom:10px}
.news-meta b{color:var(--g-500);font-weight:600}
.news-body h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:10px}
.news-body p{font-size:14px;color:var(--ink-3);flex:1}

/* ============ CTA / 表单 ============ */
.cta{background:linear-gradient(135deg,#02060f,#161c59 50%,#043779);color:#fff;
  padding:70px 0;position:relative;overflow:hidden}
.cta-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center}
.cta h2{font-size:36px;font-weight:800;margin-bottom:16px}
.cta p{color:rgba(255,255,255,.78);margin-bottom:26px;font-size:16px}
.cta-list{display:grid;gap:14px;margin-bottom:28px}
.cta-list div{display:flex;gap:12px;align-items:flex-start;font-size:15px;
  color:rgba(255,255,255,.9)}
.cta-list svg{flex-shrink:0;margin-top:4px}
.form-card{background:var(--white);border-radius:18px;padding:34px;color:var(--ink);
  box-shadow:var(--sh-lg)}
.form-card h3{font-size:21px;font-weight:700;margin-bottom:6px}
.form-card>p{font-size:13.5px;color:var(--ink-3);margin-bottom:22px}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:6px}
.field label i{color:#d9534f;font-style:normal;margin-left:2px}
.field input,.field select,.field textarea{width:100%;padding:11px 14px;
  border:1px solid var(--line);border-radius:10px;font-size:14px;font-family:inherit;
  background:var(--g-025);transition:.25s;color:var(--ink)}
.field textarea{resize:vertical;min-height:96px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--g-400);background:#fff;
  box-shadow:0 0 0 3px rgba(24,119,212,.14)}
.form-msg{margin-top:14px;padding:11px 16px;border-radius:10px;font-size:14px;display:none}
.form-msg.ok{display:block;background:var(--g-050);color:var(--g-700);border:1px solid var(--g-200)}
.form-msg.err{display:block;background:#fdf0ef;color:#b3382f;border:1px solid #f3c9c6}

/* ============ 关于页 ============ */
.page-head{background:linear-gradient(140deg,#02060f,#041028 46%,#0d3a72);color:#fff;
  padding:66px 0;position:relative;overflow:hidden}
.page-head::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(0,194,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,194,255,.06) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(ellipse at 72% 40%,#000 0%,transparent 72%);
  mask-image:radial-gradient(ellipse at 72% 40%,#000 0%,transparent 72%)}
.page-head::after{content:"";position:absolute;width:560px;height:560px;border-radius:50%;
  right:-160px;top:-240px;pointer-events:none;
  background:radial-gradient(circle,rgba(0,194,255,.22),transparent 68%)}
.page-head .wrap{position:relative;z-index:2}
.page-head h1{font-size:40px;font-weight:800;margin-bottom:10px;letter-spacing:-.5px}
.page-head p{color:rgba(255,255,255,.78);font-size:16px;max-width:760px}
.crumb{font-size:13px;color:rgba(255,255,255,.58);margin-bottom:14px;
  display:flex;align-items:center;gap:7px}
.crumb::before{content:"";width:5px;height:5px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 8px var(--accent)}
.crumb a:hover{color:var(--g-300)}

.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about-text p{color:var(--ink-2);margin-bottom:16px;font-size:15.5px}
.about-points{display:grid;gap:14px;margin-top:26px}
.about-points div{display:flex;gap:12px;align-items:flex-start}
.about-points svg{flex-shrink:0;margin-top:3px}
.about-points b{font-size:15px;display:block;margin-bottom:2px}
.about-points span{font-size:14px;color:var(--ink-3)}

.tl{position:relative;padding-left:34px}
.tl::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(var(--g-400),var(--g-200))}
.tl-item{position:relative;margin-bottom:28px}
.tl-item::before{content:"";position:absolute;left:-30px;top:6px;width:12px;height:12px;
  border-radius:50%;background:var(--g-500);border:3px solid #fff;box-shadow:0 0 0 3px var(--g-200)}
.tl-item b{font-size:16px;display:block;margin-bottom:3px}
.tl-item span{font-size:13.5px;color:var(--g-3,#6b8a7c)}

/* 证书 */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cert{background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  padding:28px 22px;text-align:center;transition:.35s}
.cert:hover{transform:translateY(-5px);box-shadow:var(--sh-lg);border-color:var(--g-300)}
.cert-ico{width:64px;height:64px;margin:0 auto 16px;border-radius:16px;
  background:linear-gradient(135deg,var(--g-050),var(--g-200));display:grid;place-items:center;color:var(--g-600)}
.cert b{display:block;font-size:16.5px;margin-bottom:6px}
.cert span{font-size:13px;color:var(--ink-3)}

/* ============ 页脚 ============ */
footer{background:linear-gradient(180deg,#02060f,#041028 55%,#161c59);color:rgba(255,255,255,.65);padding:66px 0 0;font-size:14px}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px;padding-bottom:44px}
.f-brand .logo{margin-bottom:18px}
.f-brand .logo-txt b{color:#fff}
.f-brand .logo-txt i{color:var(--g-400)}
.f-brand p{line-height:1.9;max-width:340px;font-size:13.5px}
.f-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.f-col a{display:block;padding:5px 0;transition:.25s}
.f-col a:hover{color:var(--g-300);transform:translateX(4px)}
.f-contact div{display:flex;gap:10px;padding:5px 0;align-items:flex-start}
.f-contact svg{flex-shrink:0;margin-top:4px;color:var(--g-400)}
.f-bot{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px}
.f-bot a{color:var(--g-400)}

/* ============ 浮动件（右下角） ============ */
.fab-hide{position:fixed;right:24px;bottom:28px;z-index:200;
  display:flex;flex-direction:column;gap:12px;align-items:center}
/* 三个悬浮按钮（回顶部 / QQ / 电话）尺寸统一 */
.fab,.backtop{width:50px;height:50px;border-radius:50%;
  display:grid;place-items:center;box-shadow:var(--sh-lg);cursor:pointer;
  border:none;transition:.3s;color:#fff}
.fab:hover,.backtop:hover{transform:translateY(-3px)}
.fab svg{width:22px;height:22px;display:block}
.backtop svg{width:19px;height:19px}
.fab.wa{background:#0d4e9e}.fab.tel{background:#043779}
.backtop{background:var(--g-800);
  opacity:0;pointer-events:none;
  transition:.3s;border:1px solid rgba(90,169,240,.3);font-size:19px;line-height:1}
.backtop.show{opacity:1;pointer-events:auto}

.pt-fig{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  transition:.35s;margin:0}
.pt-fig:hover{transform:translateY(-5px);box-shadow:var(--sh-lg);border-color:var(--g-300)}
.pt-fig img{width:100%;height:260px;object-fit:contain;background:#fff;padding:18px}

/* 产品技术资料（宣传图 / 参数表 / 订货指南） */
.prod-docs{display:grid;grid-template-columns:repeat(auto-fit,minmax(420px,1fr));gap:24px}
.prod-docs .sec-head{grid-column:1/-1}
.doc-fig{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  margin:0;transition:.32s}
.doc-fig:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--g-300)}
.doc-fig img{width:100%;height:auto;max-height:520px;object-fit:contain;background:#fff;padding:12px;display:block}
.doc-fig figcaption{padding:12px 18px;font-size:14px;font-weight:600;color:var(--ink-2);
  border-top:1px solid var(--line);background:#fafdff}
/* 单张资料时占满整行，横版宣传图才能看清（类名由 JS 加，避免依赖 :has()） */
.prod-docs.single{grid-template-columns:1fr}
@media(max-width:900px){.prod-docs{grid-template-columns:1fr}}
.pt-fig figcaption{padding:18px 22px;border-top:1px solid var(--line)}
.pt-fig figcaption b{display:block;font-size:16px;font-weight:700;margin-bottom:4px;color:var(--g-700)}
.pt-fig figcaption span{font-size:13.5px;color:var(--ink-3)}
@media(max-width:600px){.pt-fig img{height:200px}}

/* 品牌LOGO区 */
.brand-wall{display:flex;gap:44px;align-items:center;justify-content:center;flex-wrap:wrap;
  background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:var(--r);
  padding:40px 30px;margin-bottom:48px}
.brand-wall figure{text-align:center}
.brand-wall img{background:#fff;border:1px dashed var(--line);border-radius:10px;padding:14px}
.brand-wall figcaption{font-size:12px;color:var(--ink-3);margin-top:8px}

/* 产品实拍 */
.prod-real{width:100%;height:100%;object-fit:cover}
/* ============ 地图卡片 ============ */
.map-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;box-shadow:var(--sh);position:relative}
.map-box{width:100%;height:340px;background:#eef4fa}
.map-box svg{width:100%;height:100%;display:block}
.map-info{padding:20px 24px;display:flex;flex-direction:column;gap:8px}
.map-info-row b{font-size:16px;font-weight:700;color:var(--ink);display:block;margin-bottom:3px}
.map-info-row span{font-size:13.5px;color:var(--ink-3);display:inline-flex;align-items:center;gap:6px;margin-right:18px}
.map-goto{display:block;padding:12px;text-align:center;font-size:14px;font-weight:600;
  color:var(--g-600);background:var(--g-025);border-top:1px solid var(--line);transition:.25s}
.map-goto:hover{background:var(--g-050);color:var(--g-500)}
@media(max-width:600px){.map-box{height:250px}}

/* 移动端询价悬浮条 */
.m-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:150;
  background:var(--g-800);padding:10px 16px;gap:12px}
.m-bar .btn{flex:1;text-align:center}

@media(max-width:980px){
  .menu{position:fixed;inset:70px 0 auto 0;background:#fff;flex-direction:column;
    padding:24px;gap:20px;border-bottom:1px solid var(--line);display:none;
    box-shadow:var(--sh-lg);align-items:flex-start}
  .menu.open{display:flex}
  .nav-toggle{display:block}
  .nav .wrap>.btn{display:none}
  .hero{padding:60px 0 70px}
  .hero h1{font-size:34px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .adv-grid,.ind-grid,.news-grid,.qa-grid{grid-template-columns:repeat(2,1fr)}
  .prod-grid,.cus-grid,.cert-grid{grid-template-columns:repeat(2,1fr)}
  .cta-grid,.about-grid{grid-template-columns:1fr;gap:40px}
  .f-grid{grid-template-columns:1fr 1fr;gap:32px}
  section{padding:60px 0}
  .sec-head h2{font-size:28px}
  .m-bar{display:flex}
  footer{padding-bottom:72px}
  .fab-hide{right:14px;bottom:84px;gap:10px}
  .fab,.backtop{width:46px;height:46px}
  .fab svg{width:20px;height:20px}
  /* 新增区块的响应式 */
  .hero-visual{max-width:440px;margin:0 auto;width:100%}
  .hero-tag{font-size:11px;padding:5px 10px}
  .arch-list{grid-template-columns:repeat(2,1fr);gap:44px 12px}
  .arch-core{width:128px;height:128px}
  .arch-core strong{font-size:19px}
  .arch-ring.r3{display:none}
  .kpi-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .kpi b{font-size:34px}
  .kpi b i{font-size:17px}
  .scene{padding:70px 0}
  .scene-inds{grid-template-columns:repeat(2,1fr);gap:12px}
  .scene .sec-head h2{font-size:27px}
  .page-head{padding:46px 0}
  .page-head h1{font-size:29px}
}
@media(max-width:600px){
  .wrap{padding:0 16px}
  .adv-grid,.ind-grid,.news-grid,.qa-grid,.prod-grid,.cus-grid,.cert-grid{grid-template-columns:1fr}
  .frow{grid-template-columns:1fr}
  .hero h1{font-size:27px}
  .hero-lead{font-size:15px}
  .f-grid{grid-template-columns:1fr}
  .tbl{font-size:13px}
  .tbl th,.tbl td{padding:11px 12px}
  .topbar .wrap{font-size:12px}
  /* 窄屏 */
  .arch-list{grid-template-columns:1fr 1fr;gap:34px 10px}
  .arch-ring.r2,.arch-ring.r3{display:none}
  .arch-core{width:112px;height:112px}
  .arch-core strong{font-size:16.5px}
  .arch-core span{font-size:10.5px}
  .arch-item{padding:13px 9px}
  .arch-item b{font-size:13.5px}
  .arch-item span{font-size:10.5px}
  .kpi-grid{gap:10px}
  .kpi b{font-size:27px}
  .kpi span{font-size:12px;letter-spacing:.8px}
  .scene-inds{grid-template-columns:1fr}
  .scene-ind{display:flex;align-items:baseline;gap:12px}
  .scene-ind span{margin-top:0}
  .hero-tag.t1,.hero-tag.t3{font-size:10px;padding:4px 8px}
}