/* ==========================================================================
   杭州冠悦自动化设备有限公司 · 官网样式
   设计系统：深钢蓝 + 品牌蓝渐变 + 冷白；全黑体，工业技术感
   主业=维修技术，辅业=备品备件 —— 版面权重按此分配
   ========================================================================== */

:root{
  /* —— 品牌色，取自 logo 渐变 —— */
  --blue:#1668c4;        /* 主蓝，浅底上的按钮/文字（白底对比 4.7:1，达 AA） */
  --blue-d:#12408f;      /* 深蓝 */
  --blue-l:#4b9ae8;      /* 深底上的亮蓝文字 */
  --blue-g:linear-gradient(135deg,#2e86d0 0%,#1a4fa0 100%);

  /* —— 中性色 —— */
  --ink:#0e1622;         /* 深色区底 */
  --ink-2:#16202f;       /* 深色卡片 */
  --ink-3:#22303f;       /* 深色描边 */
  --paper:#ffffff;
  --paper-2:#f4f6f9;     /* 浅灰区底 */
  --line:#e2e7ee;
  --text:#1a2330;
  --muted:#5c6875;       /* 白底 5.9:1，达 AA */
  --muted-d:rgba(255,255,255,.66);

  --warn:#e2703a;        /* 急修/热线强调色 */

  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB",
         "Microsoft YaHei","微软雅黑","Source Han Sans SC",sans-serif;
  --mono:"SF Mono","Cascadia Mono",Consolas,"Courier New",monospace;

  --wrap:1200px;
  --gut:clamp(18px,5vw,56px);
  --r:4px;               /* 直角为主，仅 4px 圆角，工业感 */
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--sans);color:var(--text);background:var(--paper);
  line-height:1.75;-webkit-font-smoothing:antialiased;
  font-size:15.5px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
figure{margin:0}                 /* 浏览器默认 margin:1em 40px，会把图片网格撑歪 */
h1,h2,h3,h4{margin:0}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}

/* ---------- 顶栏 ---------- */
.hd{position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(14,22,34,.0);transition:background .3s,box-shadow .3s}
.hd.solid{background:rgba(14,22,34,.97);box-shadow:0 1px 0 rgba(255,255,255,.08)}
.hd-in{display:flex;align-items:center;justify-content:space-between;
  height:70px;max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.logo{display:flex;align-items:center;gap:10px;color:#fff}
.logo img{height:34px;width:auto}
.logo b{font-size:18px;font-weight:700;letter-spacing:.08em;line-height:1.2}
.logo i{display:block;font-style:normal;font-size:9px;letter-spacing:.22em;
  color:var(--blue-l);text-transform:uppercase;font-weight:400}

.nav{display:flex;gap:30px;align-items:center}
.nav a{color:rgba(255,255,255,.82);font-size:14.5px;padding:6px 0;position:relative}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--blue-l);transition:right .28s}
.nav a:hover::after,.nav a.on::after{right:0}
.nav a.on,.nav a:hover{color:#fff}

/* 二级下拉：维修服务 / 产品销售 两条主线 */
.nav .drop{position:relative;padding:17px 0;margin:-17px 0}   /* 上下补白把顶栏整高做成悬停区，鼠标移到面板上不会断 */
.nav .drop>a{padding-right:15px}
.nav .drop>a i{position:absolute;right:0;top:50%;margin-top:-2px;width:0;height:0;
  border:4px solid transparent;border-top-color:currentColor;opacity:.66;
  transition:transform .25s,opacity .25s}
.nav .drop:hover>a i,.nav .drop:focus-within>a i{opacity:1;transform:rotate(180deg)}
.nav .sub{position:absolute;top:100%;left:-20px;min-width:196px;padding:7px 0;
  background:rgba(14,22,34,.98);border-top:2px solid var(--blue-l);
  box-shadow:0 16px 34px rgba(0,0,0,.34);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s,transform .24s,visibility .24s}
.nav .drop:hover .sub,.nav .drop:focus-within .sub{opacity:1;visibility:visible;transform:none}
.nav .sub a{display:block;padding:9px 20px;font-size:14px;white-space:nowrap;
  color:rgba(255,255,255,.76)}
.nav .sub a::after{display:none}
.nav .sub a:hover,.nav .sub a.on{background:rgba(75,154,232,.16);color:#fff}

.hd-tel{display:flex;align-items:center;gap:7px;margin-left:26px;
  padding:8px 16px;background:var(--blue);color:#fff;border-radius:var(--r);
  font-size:14.5px;font-weight:600;letter-spacing:.02em;white-space:nowrap;transition:background .25s}
.hd-tel:hover{background:#1257a8}
.hd-tel svg{width:15px;height:15px;fill:currentColor;flex:0 0 auto}

.burger{display:none;width:32px;height:24px;background:none;border:0;padding:0;cursor:pointer}
.burger i{display:block;height:2px;background:#fff;margin:6px 0;transition:.28s;border-radius:2px}

@media(max-width:940px){
  .nav{position:fixed;top:70px;left:0;right:0;flex-direction:column;gap:0;
    background:var(--ink);padding:8px 0 18px;
    transform:translateY(-130%);transition:transform .34s;box-shadow:0 12px 24px rgba(0,0,0,.3)}
  .nav.open{transform:none}
  .nav a{width:100%;padding:13px var(--gut);border-bottom:1px solid rgba(255,255,255,.07)}
  .nav a::after{display:none}
  /* 手机端不做下拉，二级项直接缩进平铺，少一次点击 */
  .nav .drop{width:100%;padding:0;margin:0}
  .nav .drop>a i{display:none}
  .nav .sub{position:static;min-width:0;padding:0;opacity:1;visibility:visible;
    transform:none;background:rgba(255,255,255,.035);border-top:0;box-shadow:none}
  .nav .sub a{padding:11px var(--gut) 11px calc(var(--gut) + 18px);font-size:13.5px;
    color:rgba(255,255,255,.66);white-space:normal}
  .nav .sub a::before{content:"";display:inline-block;width:12px;height:1px;
    background:rgba(75,154,232,.7);vertical-align:middle;margin-right:9px}
  .burger{display:block}
  .hd-tel{margin-left:auto;margin-right:14px;padding:7px 13px;font-size:13.5px}
  .hd-tel span{display:none}
}

/* ---------- 通用区块 ---------- */
.sec{padding:clamp(48px,6.4vw,86px) 0}
.sec-2{background:var(--paper-2)}
.sec-dark{background:var(--ink);color:#fff}
.sec-dark .lead,.sec-dark p{color:var(--muted-d)}

.eyebrow{display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:.26em;color:var(--blue);text-transform:uppercase;
  margin:0 0 14px;font-weight:600}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--blue)}
.sec-dark .eyebrow{color:var(--blue-l)}
.sec-dark .eyebrow::before{background:var(--blue-l)}

.h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;letter-spacing:.02em;
  margin:0 0 16px;line-height:1.4}
.h3{font-size:clamp(18px,2.2vw,21px);font-weight:700;margin:0 0 10px;line-height:1.5}
.lead{max-width:70ch;color:var(--muted);margin:0 0 42px;font-size:15.5px}
.sec-head{margin-bottom:clamp(28px,3.6vw,44px)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 28px;border:1.5px solid var(--blue);color:var(--blue);
  font-size:14.5px;font-weight:600;border-radius:var(--r);
  background:none;cursor:pointer;transition:.25s;font-family:inherit}
.btn:hover{background:var(--blue);color:#fff}
.btn-fill{background:var(--blue);color:#fff}
.btn-fill:hover{background:#1257a8;border-color:#1257a8}
.btn-ghost{border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn svg{width:16px;height:16px;fill:currentColor}
.btns{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 首屏轮播 ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;
  min-height:min(88vh,760px);display:flex;align-items:center;
  padding:calc(70px + clamp(30px,5vw,54px)) 0 clamp(74px,9vw,104px)}

.hero-slides{position:absolute;inset:0;z-index:0;overflow:hidden}
/* ⚠️ 用 <img> 而不是 background-image：CSS 自定义属性里的相对路径
   是按「样式表所在目录」解析的，写在 HTML 内联 style 里会变成 assets/css/assets/... */
.slide{position:absolute;inset:0;opacity:0;transition:opacity 1.25s ease}
.slide img{width:100%;height:100%;object-fit:cover;display:block}
.slide.on{opacity:1}
.slide.on img{animation:heroZoom 9s ease-out forwards;will-change:transform}
@keyframes heroZoom{from{transform:scale(1.005)}to{transform:scale(1.085)}}

/* 遮罩：左侧压深保证文字可读，右侧留出画面 */
.hero-mask{position:absolute;inset:0;z-index:1;
  background:linear-gradient(96deg,rgba(9,15,25,.94) 0%,rgba(9,15,25,.84) 32%,
             rgba(9,15,25,.34) 66%,rgba(9,15,25,.46) 100%)}
.hero-mask::after{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 70% at 22% 42%,#000 26%,transparent 74%)}

/* .hero 是 flex 容器，.wrap 作为 flex item 会缩到内容宽度，必须显式撑满 */
.hero>.wrap{width:100%}
.hero-in{position:relative;z-index:2;max-width:660px}

/* 指示点 */
.hero-dots{position:absolute;left:0;right:0;bottom:clamp(24px,4vw,38px);z-index:3;
  display:flex;gap:9px;justify-content:center}
.hero-dots button{width:32px;height:3px;padding:0;border:0;cursor:pointer;border-radius:2px;
  background:rgba(255,255,255,.3);transition:background .3s,width .3s}
.hero-dots button:hover{background:rgba(255,255,255,.55)}
.hero-dots button.on{background:var(--blue-l);width:54px}

/* 首屏文字分层入场 */
.hero-in>*{opacity:0;transform:translateY(16px);
  animation:heroIn .8s cubic-bezier(.2,.7,.3,1) forwards}
.hero-in>*:nth-child(1){animation-delay:.15s}
.hero-in>*:nth-child(2){animation-delay:.28s}
.hero-in>*:nth-child(3){animation-delay:.41s}
.hero-in>*:nth-child(4){animation-delay:.54s}
.hero-in>*:nth-child(5){animation-delay:.67s}
@keyframes heroIn{to{opacity:1;transform:none}}

@media(max-width:700px){
  .hero-mask{background:linear-gradient(178deg,rgba(9,15,25,.86) 0%,rgba(9,15,25,.78) 40%,rgba(9,15,25,.93) 100%)}
}
@media(prefers-reduced-motion:reduce){
  .slide.on img{animation:none}
  .hero-in>*{opacity:1;transform:none;animation:none}
}

/* 首屏下方数据条 */
.statbar{background:var(--ink-2);padding:0}
.statbar .wrap{padding-top:0;padding-bottom:0}

.hero-tag{display:inline-block;padding:6px 14px;border:1px solid rgba(75,154,232,.5);
  border-radius:100px;font-size:12.5px;letter-spacing:.12em;color:var(--blue-l);margin-bottom:22px}
.hero h1{font-size:clamp(30px,5.2vw,54px);font-weight:800;line-height:1.24;
  letter-spacing:.01em;margin:0 0 20px}
.hero h1 em{font-style:normal;
  background:linear-gradient(120deg,#5fb0f5,#2e86d0);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(15px,1.7vw,17.5px);color:rgba(255,255,255,.84);
  max-width:40ch;margin:0 0 30px;line-height:1.85;
  text-shadow:0 1px 12px rgba(0,0,0,.5)}

.chips{display:flex;flex-wrap:wrap;gap:9px;margin:0 0 34px}
.chips span{padding:6px 13px;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.13);border-radius:var(--r);
  font-size:13px;color:rgba(255,255,255,.86)}

.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.tel-big{display:inline-flex;align-items:center;gap:12px;padding:15px 26px;
  background:var(--blue-g);border-radius:var(--r);color:#fff;
  box-shadow:0 8px 26px rgba(26,79,160,.42);transition:transform .22s,box-shadow .22s}
.tel-big:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(26,79,160,.55)}
.tel-big svg{width:24px;height:24px;fill:#fff;flex:0 0 auto}
.tel-big u{display:block;text-decoration:none;font-size:10.5px;letter-spacing:.18em;
  color:rgba(255,255,255,.78);line-height:1.5}
.tel-big b{display:block;font-size:21px;font-weight:700;letter-spacing:.03em;
  line-height:1.25;font-family:var(--mono)}

/* 首屏右侧：实拍图 + 平台标签 */
.hero-fig{position:relative}
.hero-fig img{width:100%;border-radius:var(--r);
  box-shadow:0 24px 60px rgba(0,0,0,.5);border:1px solid rgba(255,255,255,.1)}
.hero-fig figcaption{position:absolute;left:0;bottom:0;right:0;
  padding:26px 18px 14px;font-size:12.5px;color:rgba(255,255,255,.9);
  background:linear-gradient(transparent,rgba(9,15,24,.92));border-radius:0 0 var(--r) var(--r)}
.hero-fig figcaption b{display:block;font-size:14px;font-weight:600;margin-bottom:1px}

@media(max-width:880px){
  /* 手机上先给结论和电话，图片跟在后面；竖图裁成横幅，不占满一屏 */
  .hero-in{grid-template-columns:1fr;gap:32px}
  .hero{padding-top:clamp(96px,22vw,132px)}
  .hero-fig img{aspect-ratio:4/3;object-fit:cover;object-position:center 38%}
}

/* 数据条 */
.stats{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:rgba(255,255,255,.09)}
.stats div{background:var(--ink-2);padding:clamp(22px,3vw,34px) 18px;text-align:center;
  transition:background .3s}
.stats div:hover{background:#1b2739}
.stats b{display:block;font-size:clamp(21px,3vw,30px);font-weight:800;color:#fff;
  line-height:1.25;letter-spacing:.01em}
.stats span{display:block;font-size:12.5px;color:rgba(255,255,255,.56);margin-top:5px}
@media(max-width:620px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .stats div{padding:17px 12px}
}

/* ---------- 服务卡片网格 ---------- */
.grid{display:grid;gap:clamp(16px,2vw,24px)}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.g2,.g3,.g4{grid-template-columns:1fr}}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:clamp(24px,3vw,32px);transition:border-color .25s,box-shadow .25s,transform .25s;
  height:100%;display:flex;flex-direction:column;position:relative;overflow:hidden}
/* 悬停时顶部渐变线从左展开 —— 克制的工业感反馈 */
.card::before{content:"";position:absolute;left:0;top:0;height:2px;width:0;
  background:var(--blue-g);transition:width .42s cubic-bezier(.2,.7,.3,1)}
.card:hover::before{width:100%}
.card:hover{border-color:#b9cfe8;box-shadow:0 14px 34px rgba(20,50,90,.10);transform:translateY(-3px)}
.sec-dark .card::before{background:linear-gradient(90deg,#4b9ae8,#2e86d0)}
.card-no{font-family:var(--mono);font-size:12px;color:var(--blue);
  letter-spacing:.16em;font-weight:600;margin-bottom:14px}
.card p{color:var(--muted);margin:0 0 14px;font-size:14.5px}
.card ul{margin-top:auto}
.card li{position:relative;padding-left:16px;font-size:14px;color:var(--muted);line-height:1.9}
.card li::before{content:"";position:absolute;left:0;top:12px;width:5px;height:5px;
  background:var(--blue);border-radius:50%}

/* 图标 */
.ico{width:44px;height:44px;margin-bottom:18px;color:var(--blue)}
.ico svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.4;
  stroke-linecap:round;stroke-linejoin:round}

/* ---------- 品牌墙 ---------- */
.brands{display:flex;flex-wrap:wrap;gap:10px}
.brands span{padding:9px 18px;border:1px solid var(--line);border-radius:var(--r);
  background:#fff;font-size:14px;color:var(--text);letter-spacing:.02em;transition:.25s}
.brands span:hover{border-color:var(--blue);color:var(--blue)}
.sec-dark .brands span{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.15);color:rgba(255,255,255,.86)}
.sec-dark .brands span:hover{border-color:var(--blue-l);color:#fff}
.brands span i{font-style:normal;color:var(--muted);font-size:12.5px;margin-left:6px}
.sec-dark .brands span i{color:rgba(255,255,255,.5)}

/* ---------- 品牌墙（logo 卡片 + 悬停放大 + 点击详情） ---------- */
.wall-hd{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.wall-hd .k{width:34px;height:34px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:var(--blue-g);color:#fff;border-radius:var(--r);
  font-family:var(--mono);font-weight:700;font-size:15px}
.wall-hd b{display:block;font-size:16px;font-weight:700;line-height:1.5}
.wall-hd i{font-style:normal;font-size:13.5px;color:var(--muted);line-height:1.5}
.sec-dark .wall-hd i{color:rgba(255,255,255,.6)}

.brandwall{display:grid;grid-template-columns:repeat(auto-fill,minmax(152px,1fr));
  gap:clamp(9px,1vw,13px)}
.bcard{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:19px 12px 15px;cursor:pointer;font-family:inherit;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:9px;
  transition:transform .32s cubic-bezier(.2,.7,.3,1),box-shadow .32s,border-color .32s}
.bcard:hover,.bcard:focus-visible{transform:translateY(-6px);border-color:#a9c6e6;
  box-shadow:0 18px 38px rgba(20,50,90,.14);z-index:2;outline:none}
.bcard::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;width:0;margin:auto;
  background:var(--blue-g);transition:width .38s cubic-bezier(.2,.7,.3,1)}
.bcard:hover::after{width:100%}

.blogo{height:36px;width:100%;display:flex;align-items:center;justify-content:center}
.blogo img{max-height:36px;max-width:92%;object-fit:contain;
  filter:grayscale(1) opacity(.72);
  transition:filter .35s,transform .35s cubic-bezier(.2,.7,.3,1)}
.bcard:hover .blogo img{filter:grayscale(0) opacity(1);transform:scale(1.16)}
.blogo .txt{font-family:var(--mono);font-weight:700;font-size:14.5px;letter-spacing:.03em;
  color:#4d5c6d;transition:color .35s,transform .35s cubic-bezier(.2,.7,.3,1);line-height:1.2}
.bcard:hover .blogo .txt{color:var(--blue);transform:scale(1.12)}

.bcard b{font-size:13.5px;font-weight:600;line-height:1.35}
.bcard i{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.03em}
.bcard .more{position:absolute;right:9px;top:9px;width:16px;height:16px;opacity:0;
  transition:opacity .3s;color:var(--blue)}
.bcard:hover .more{opacity:.85}

.sec-dark .bcard{background:var(--ink-2);border-color:var(--ink-3)}
.sec-dark .bcard b{color:#fff}
.sec-dark .bcard:hover{border-color:var(--blue-l);box-shadow:0 18px 38px rgba(0,0,0,.4)}
.sec-dark .blogo img{filter:grayscale(1) brightness(2.4) opacity(.72)}
.sec-dark .bcard:hover .blogo img{filter:grayscale(0) brightness(1) opacity(1)}
.sec-dark .blogo .txt{color:rgba(255,255,255,.72)}
.sec-dark .bcard:hover .blogo .txt{color:var(--blue-l)}
.sec-2 .bcard{background:#fff}

/* 品牌详情弹层 */
.bmodal{position:fixed;inset:0;z-index:210;display:none;align-items:center;justify-content:center;
  padding:20px;background:rgba(8,12,18,.74)}
.bmodal.on{display:flex;animation:fadeIn .22s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.bmodal-box{background:#fff;border-radius:6px;width:100%;max-width:680px;max-height:88vh;
  overflow:auto;position:relative;animation:popIn .3s cubic-bezier(.2,.7,.3,1)}
@keyframes popIn{from{opacity:0;transform:translateY(18px) scale(.98)}to{opacity:1;transform:none}}
.bmodal-hd{display:flex;align-items:center;gap:18px;padding:26px 28px;
  border-bottom:1px solid var(--line);background:var(--paper-2)}
.bmodal-hd .lg{width:96px;height:44px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:6px}
.bmodal-hd .lg img{max-width:100%;max-height:100%;object-fit:contain}
.bmodal-hd .lg .txt{font-family:var(--mono);font-weight:700;font-size:14px;color:var(--blue-d)}
.bmodal-hd h3{font-size:21px;font-weight:700;margin:0 0 4px}
.bmodal-hd p{margin:0;font-size:13px;color:var(--muted);letter-spacing:.04em}
.bmodal-bd{padding:24px 28px 28px}
.bmodal-bd h4{font-size:13px;letter-spacing:.16em;color:var(--blue);margin:0 0 12px;font-weight:600}
.bmodal-bd h4:not(:first-child){margin-top:24px}
.bmodal-bd ul{display:grid;gap:7px}
.bmodal-bd li{position:relative;padding-left:16px;font-size:14.5px;color:var(--text);line-height:1.75}
.bmodal-bd li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;
  background:var(--blue);border-radius:50%}
.bmodal-bd .sys{background:var(--paper-2);border-radius:var(--r);padding:14px 16px;
  font-size:14px;line-height:1.8;color:var(--text)}
.bmodal-bd .brief{font-size:15px;color:var(--muted);margin:0 0 20px;line-height:1.8}
.bmodal-bd .note{background:rgba(22,104,196,.06);border-left:3px solid var(--blue);
  padding:12px 16px;border-radius:0 var(--r) var(--r) 0;margin-top:22px}
.bmodal-ft{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding:18px 28px;border-top:1px solid var(--line);background:var(--paper-2)}
.bmodal-ft span{font-size:13.5px;color:var(--muted)}
.bmodal-x{position:absolute;right:14px;top:14px;width:34px;height:34px;border:0;cursor:pointer;
  background:rgba(255,255,255,.9);color:var(--muted);font-size:22px;line-height:1;border-radius:var(--r);
  transition:background .2s,color .2s}
.bmodal-x:hover{background:var(--ink);color:#fff}
@media(max-width:560px){
  .bmodal-hd{padding:20px}
  .bmodal-bd{padding:20px}
  .bmodal-ft{padding:16px 20px}
}
@media(prefers-reduced-motion:reduce){
  .bcard,.blogo img,.blogo .txt,.bcard::after{transition:none}
  .bmodal.on,.bmodal-box{animation:none}
}

/* ---------- 照片网格 ---------- */
.photos{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(10px,1.4vw,16px)}
@media(max-width:900px){.photos{grid-template-columns:repeat(2,1fr)}}
.shot{position:relative;overflow:hidden;border-radius:var(--r);
  background:var(--ink-2);cursor:zoom-in;display:block}
.shot img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s}
.shot:hover img{transform:scale(1.06)}
.shot figcaption{position:absolute;left:0;right:0;bottom:0;padding:24px 14px 11px;
  font-size:12.5px;color:#fff;background:linear-gradient(transparent,rgba(9,15,24,.88));
  line-height:1.5}

/* 灯箱 */
.lb{position:fixed;inset:0;z-index:200;background:rgba(8,12,18,.94);
  display:none;align-items:center;justify-content:center;padding:24px;cursor:zoom-out}
.lb.on{display:flex}
.lb img{max-width:min(1000px,92vw);max-height:86vh;width:auto;border-radius:var(--r);
  box-shadow:0 30px 80px rgba(0,0,0,.6)}
.lb p{position:absolute;bottom:22px;left:0;right:0;text-align:center;
  color:rgba(255,255,255,.82);font-size:13.5px;margin:0}
.lb-x{position:absolute;top:18px;right:22px;width:40px;height:40px;border:0;
  background:rgba(255,255,255,.1);color:#fff;font-size:24px;line-height:1;
  border-radius:var(--r);cursor:pointer;transition:background .2s}
.lb-x:hover{background:rgba(255,255,255,.22)}

/* ---------- 表格（备件清单） ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff}
table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:640px}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--paper-2);font-weight:700;font-size:13.5px;letter-spacing:.04em;white-space:nowrap}
tr:last-child td{border-bottom:0}
td:first-child{font-weight:600;white-space:nowrap;width:1%}
td b{color:var(--blue-d)}
tbody tr:hover td{background:#f9fbfd}

/* ---------- 图文交错块 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4.5vw,64px);align-items:center}
.split.rev>*:first-child{order:2}
@media(max-width:820px){
  .split{grid-template-columns:1fr;gap:28px}
  .split.rev>*:first-child{order:0}
}
.split img{border-radius:var(--r);width:100%}
.split-imgs{display:grid;grid-template-columns:1fr 1fr;gap:12px}

/* ---------- 行动区 ---------- */
.cta{background:var(--ink);color:#fff;position:relative;overflow:hidden;
  padding:clamp(52px,7vw,84px) 0}
.cta::after{content:"";position:absolute;width:620px;height:620px;left:-8%;bottom:-58%;
  border-radius:50%;background:radial-gradient(circle,rgba(46,134,208,.26) 0%,rgba(46,134,208,0) 66%)}
.cta-in{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:30px;
  align-items:center;justify-content:space-between}
.cta h2{font-size:clamp(22px,3vw,32px);font-weight:700;margin:0 0 8px;line-height:1.45}
.cta p{color:rgba(255,255,255,.68);margin:0;font-size:15px}

/* ---------- 页脚 ---------- */
.ft{background:#0a111b;color:rgba(255,255,255,.6);font-size:14px;padding:clamp(44px,6vw,68px) 0 0}
.ft-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:clamp(24px,3.5vw,48px);
  padding-bottom:40px}
@media(max-width:860px){.ft-top{grid-template-columns:1fr 1fr;gap:30px}}
@media(max-width:520px){.ft-top{grid-template-columns:1fr}}
.ft h4{color:#fff;font-size:14.5px;font-weight:700;margin:0 0 16px;letter-spacing:.04em}
.ft li{line-height:2.15}
.ft a:hover{color:var(--blue-l)}
.ft-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.ft-logo img{height:38px}
.ft-logo b{color:#fff;font-size:16px;font-weight:700;letter-spacing:.05em}
.ft-desc{max-width:30ch;line-height:1.9;font-size:13.5px}
.ft-c{display:flex;align-items:flex-start;gap:9px;line-height:1.85;margin-bottom:11px}
.ft-c svg{width:15px;height:15px;fill:var(--blue-l);flex:0 0 auto;margin-top:6px}
.ft-c b{color:#fff;font-weight:600}
.ft-bot{border-top:1px solid rgba(255,255,255,.09);padding:18px 0;
  display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.42)}
.ft-bot a:hover{color:rgba(255,255,255,.8)}

/* ---------- 侧边悬浮 / 移动端底栏 ---------- */
.fab{position:fixed;right:16px;bottom:26px;z-index:110;display:flex;flex-direction:column;gap:8px}
.fab a,.fab button{width:52px;height:52px;display:flex;align-items:center;justify-content:center;
  background:var(--blue);color:#fff;border:0;border-radius:var(--r);cursor:pointer;
  box-shadow:0 6px 20px rgba(18,64,143,.35);transition:background .25s;position:relative}
.fab a:hover,.fab button:hover{background:#1257a8}
.fab svg{width:23px;height:23px;fill:#fff}
.fab .qr{position:absolute;right:60px;top:50%;transform:translateY(-50%) scale(.9);
  background:#fff;color:var(--text);padding:10px 14px;border-radius:var(--r);
  white-space:nowrap;font-size:13px;line-height:1.6;opacity:0;pointer-events:none;
  transition:.24s;box-shadow:0 8px 24px rgba(0,0,0,.18);text-align:left}
.fab .qr b{display:block;font-family:var(--mono);font-size:14.5px;color:var(--blue-d)}
.fab a:hover .qr,.fab button:hover .qr{opacity:1;transform:translateY(-50%) scale(1)}
.fab .top{background:var(--ink-3)}
.fab .top:hover{background:#2e4056}
.fab span{display:none}          /* 桌面只显示图标；必须写在下面的 media 之前，否则会盖掉手机端的 inline */

@media(max-width:700px){
  .fab{right:0;left:0;bottom:0;flex-direction:row;gap:0}
  .fab a,.fab button{flex:1;width:auto;height:54px;border-radius:0;gap:8px;
    font-size:15px;font-weight:600;box-shadow:0 -2px 14px rgba(0,0,0,.16)}
  .fab .wx{background:#16202f}
  .fab .top{display:none}
  .fab .qr{display:none}
  .fab span{display:inline}
  body{padding-bottom:54px}
}

/* ---------- 页头（内页） ---------- */
.phd{background:var(--ink);color:#fff;padding:calc(70px + clamp(52px,7vw,88px)) 0 clamp(52px,7vw,88px);
  position:relative;overflow:hidden;isolation:isolate}
/* 背景实景图：缓慢推近，压深并去饱和，只做氛围不抢文字 */
.phd-bg{position:absolute;inset:0;z-index:-2;background-position:center;background-size:cover;
  filter:grayscale(.34) brightness(.42) contrast(1.05);
  transform:scale(1.06);animation:kenburns 26s ease-out forwards}
@keyframes kenburns{from{transform:scale(1.16)}to{transform:scale(1.02)}}
.phd::before{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(14,22,34,.96) 0%,rgba(14,22,34,.86) 44%,rgba(14,22,34,.5) 100%)}
.phd::after{content:"";position:absolute;width:560px;height:560px;right:-10%;top:-70%;z-index:-1;
  border-radius:50%;background:radial-gradient(circle,rgba(46,134,208,.26) 0%,rgba(46,134,208,0) 66%)}
.phd-in{position:relative;z-index:2}
.phd h1{font-size:clamp(26px,4vw,42px);font-weight:800;margin:0 0 12px;letter-spacing:.02em}
.phd p{color:rgba(255,255,255,.74);margin:0;max-width:60ch}
.crumb{font-size:13px;color:rgba(255,255,255,.5);margin-bottom:16px}
.crumb a:hover{color:var(--blue-l)}
@media(prefers-reduced-motion:reduce){.phd-bg{animation:none;transform:scale(1.02)}}

/* 带锚点的区块：顶栏是 fixed 70px，不留出来会被压住 */
section[id]{scroll-margin-top:86px}

/* ---------- 小工具 ---------- */
.mt0{margin-top:0}.mb0{margin-bottom:0}
.note{font-size:13.5px;color:var(--muted);line-height:1.85}
.hl{color:var(--blue);font-weight:600}
.divider{height:1px;background:var(--line);margin:clamp(38px,5vw,58px) 0}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag-row b{font-weight:600;font-size:12.5px;padding:5px 11px;border-radius:var(--r);
  background:rgba(22,104,196,.08);color:var(--blue-d)}

/* ---------- 带图卡片 ---------- */
.card-fig{padding:0;overflow:hidden}
.card-fig .fig{position:relative;overflow:hidden;background:var(--paper-2)}
.card-fig .fig img{width:100%;aspect-ratio:4/3;object-fit:cover;
  transition:transform .6s cubic-bezier(.2,.7,.3,1)}
.card-fig:hover .fig img{transform:scale(1.05)}
.card-fig .bd{padding:clamp(20px,2.4vw,26px);display:flex;flex-direction:column;flex:1}
.card-fig .bd p:last-child{margin-bottom:0}
/* 图片角标 */
.fig-tag{position:absolute;left:12px;top:12px;padding:4px 10px;border-radius:var(--r);
  background:rgba(14,22,34,.82);color:#fff;font-size:12px;letter-spacing:.04em}

/* ---------- 顶部滚动进度条 ---------- */
.prog{position:fixed;top:0;left:0;height:2px;width:0;z-index:130;
  background:var(--blue-g);transition:width .12s linear}

/* ---------- 大序号水印 ---------- */
.bignum{position:absolute;right:18px;top:6px;font-family:var(--mono);
  font-size:64px;font-weight:800;line-height:1;color:rgba(22,104,196,.055);
  pointer-events:none;user-select:none}
.sec-dark .bignum{color:rgba(255,255,255,.05)}

/* ---------- 区块内的实景插图条 ---------- */
.strip{position:relative;border-radius:var(--r);overflow:hidden;background:var(--ink)}
.strip img{width:100%;aspect-ratio:21/9;object-fit:cover;
  filter:grayscale(.3) brightness(.62);transition:filter .6s,transform .8s}
.strip:hover img{filter:grayscale(0) brightness(.72);transform:scale(1.03)}
.strip .cap{position:absolute;left:0;right:0;bottom:0;padding:34px 26px 20px;color:#fff;
  background:linear-gradient(transparent,rgba(9,15,24,.82))}
.strip .cap b{display:block;font-size:clamp(17px,2.2vw,22px);font-weight:700;margin-bottom:4px}
.strip .cap span{font-size:13.5px;color:rgba(255,255,255,.72)}

/* 入场动画 */
.rise{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.rise.in{opacity:1;transform:none}
/* 品牌标签逐个浮现 */
.brands.in span{animation:chipin .5s cubic-bezier(.2,.7,.3,1) backwards}
@keyframes chipin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

@media(prefers-reduced-motion:reduce){
  .rise{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .shot img,.card,.tel-big,.card-fig .fig img,.strip img{transition:none}
  .brands.in span{animation:none}
  .prog{display:none}
}