*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#1559c4;
  --primary-2:#2f7bf0;
  --navy:#0a2e5c;
  --light:#eef4fc;
  --light-2:#f6f9fe;
  --text:#1f2d3d;
  --muted:#5a6b7e;
  --white:#fff;
  --border:#e2e9f3;
  --shadow:0 6px 24px rgba(21,89,196,.08);
  --shadow-hover:0 14px 34px rgba(21,89,196,.14);
}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","HarmonyOS Sans SC",sans-serif;
  color:var(--text);background:var(--white);line-height:1.7;
  font-size:clamp(14px,1.02vw,16px);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.wrap{width:min(1220px,93%);margin:0 auto}

/* ========== 返回顶部按钮 ========== */
.back-top{position:fixed;right:26px;bottom:36px;z-index:80;width:52px;height:52px;
  background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;
  cursor:pointer;opacity:0;visibility:hidden;transform:translateY(20px) scale(.94);
  transition:.35s cubic-bezier(.2,.7,.2,1);box-shadow:0 10px 30px rgba(21,89,196,.38);
  border:1px solid rgba(47,123,240,.5)}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.back-top:hover{background:var(--primary-2);transform:translateY(-4px) scale(1.04);
  box-shadow:0 14px 38px rgba(47,123,240,.48)}
.back-top svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:2.2;
  stroke-linecap:square;stroke-linejoin:miter}

/* ========== 浮动动画 Keyframes ========== */
@keyframes floatUp{
  from{opacity:0;transform:translateY(40px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes floatLeft{
  from{opacity:0;transform:translateX(-40px)}
  to{opacity:1;transform:translateX(0)}
}
@keyframes floatRight{
  from{opacity:0;transform:translateX(40px)}
  to{opacity:1;transform:translateX(0)}
}
@keyframes floatIn{
  from{opacity:0;transform:scale(.92)}
  to{opacity:1;transform:scale(1)}
}
@keyframes floatY{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-8px)}
}
@keyframes pulse{
  0%,100%{opacity:1}
  50%{opacity:.7}
}
@keyframes slideInDown{
  from{opacity:0;transform:translateY(-60px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes bannerSlide{
  0%{opacity:0;transform:scale(1.08)}
  100%{opacity:1;transform:scale(1)}
}
@keyframes bannerFade{
  from{opacity:0;transform:translateX(30px)}
  to{opacity:1;transform:translateX(0)}
}
@keyframes shimmer{
  0%{background-position:-200% 0}
  100%{background-position:200% 0}
}

.float-up{opacity:0}
.float-up.visible{animation:floatUp .8s cubic-bezier(.2,.7,.2,1) forwards}
.float-left{opacity:0}
.float-left.visible{animation:floatLeft .8s cubic-bezier(.2,.7,.2,1) forwards}
.float-right{opacity:0}
.float-right.visible{animation:floatRight .8s cubic-bezier(.2,.7,.2,1) forwards}
.float-in{opacity:0}
.float-in.visible{animation:floatIn .7s cubic-bezier(.2,.7,.2,1) forwards}

.float-delay-1{animation-delay:.08s !important}
.float-delay-2{animation-delay:.16s !important}
.float-delay-3{animation-delay:.24s !important}
.float-delay-4{animation-delay:.32s !important}
.float-delay-5{animation-delay:.4s !important}
.float-delay-6{animation-delay:.48s !important}

/* ========== 顶部导航（滑动隐藏） ========== */
header{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--border);
  transform:translateY(0);transition:transform .45s cubic-bezier(.2,.7,.2,1), box-shadow .3s ease;
  will-change:transform}
header.nav-hidden{transform:translateY(-102%);box-shadow:0 0 0 transparent}
header.nav-scrolled{box-shadow:0 6px 22px rgba(10,46,92,.08)}
body{padding-top:76px}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--navy)}
.logo img{height:40px;width:auto}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-size:15px;color:var(--muted);font-weight:600;position:relative;padding:6px 0;transition:.25s}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:3px;background:var(--primary)}
.nav-toggle{display:none;background:none;border:0;font-size:26px;color:var(--navy);cursor:pointer}

/* ========== Hero 横幅轮播（全新 <img> 方案，避免 background-image 调试困难） ========== */
.hero{position:relative;overflow:hidden;color:#fff;
  width:100%;height:clamp(420px,52vw,620px);padding:0;margin:0;
  background:linear-gradient(135deg,#0a2e5c 0%,#1559c4 55%,#2f7bf0 100%)}
.hero-slider{position:relative;width:100%;height:100%}
.hero-slide{position:absolute;inset:0;width:100%;height:100%;
  opacity:0;visibility:hidden;transition:opacity 900ms ease, visibility 900ms ease}
.hero-slide.active{opacity:1;visibility:visible;z-index:2}
/* 真实图片层：object-fit:cover 保证铺满，图片加载失败时隐藏（HTML里onerror兜底） */
.hero-slide .slide-img{position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;object-position:center center;display:block;
  transform:scale(1.04);transition:transform 5.5s ease-out}
.hero-slide.active .slide-img{transform:scale(1)}
/* 内页内联 SVG 背景铺满 */
.hero-slide > svg{position:absolute;inset:0;width:100%;height:100%;display:block}
/* 独立遮罩层（透明度大幅降低，保证背景图清晰可见） */
.hero-slide .slide-mask{position:absolute;inset:0;width:100%;height:100%;
  background:linear-gradient(135deg,rgba(10,46,92,.5) 0%,rgba(21,89,196,.38) 55%,rgba(47,123,240,.28) 100%);
  z-index:1}
/* 图片加载失败的兜底：当 .slide-img{display:none} 时，给 .hero-slide 一个带纹理的渐变占位 */
.hero-slide{background-image:
    radial-gradient(circle at 18% 28%,rgba(255,255,255,.1) 0,transparent 45%),
    radial-gradient(circle at 82% 72%,rgba(255,255,255,.08) 0,transparent 50%),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(145deg,#0c3570 0%,#1a65d8 50%,#3a8dff 100%);
  background-size:auto,auto,40px 40px,40px 40px,auto}
/* 文字层 */
.hero-slide .slide-content{position:relative;z-index:3;height:100%;display:flex;flex-direction:column;justify-content:center;
  padding:clamp(56px,7vw,90px) 0 clamp(72px,9vw,110px);box-sizing:border-box}
.hero-slide.active h1{transform:translateY(0);opacity:1}
.hero-slide.active .sub{transform:translateY(0);opacity:1}
.hero-slide.active .hero-cta{transform:translateY(0);opacity:1}

.hero h1{font-size:clamp(30px,3.5vw,50px);font-weight:800;line-height:1.2;
  transform:translateY(28px);opacity:0;transition:transform .8s .25s ease, opacity .8s .25s ease}
.hero .sub{margin-top:16px;max-width:clamp(520px,56vw,720px);
  font-size:clamp(14px,1.08vw,17px);line-height:1.85;opacity:.94;
  transform:translateY(28px);opacity:0;transition:transform .8s .45s ease, opacity .8s .45s ease}
.hero-cta{margin-top:clamp(22px,2.6vw,34px);display:flex;gap:16px;flex-wrap:wrap;
  transform:translateY(28px);opacity:0;transition:transform .8s .65s ease, opacity .8s .65s ease}

/* 内页 banner 更矮（同样使用新结构，高度策略独立） */
.hero-inner{height:clamp(260px,28vw,360px);padding:0;margin:0}
.hero-inner .hero-slider{height:100%}
.hero-inner .slide-content{padding:clamp(40px,5vw,60px) 0 clamp(48px,6vw,72px)}
.hero-inner h1{font-size:clamp(26px,2.8vw,40px)}
.hero-inner .sub{max-width:clamp(480px,52vw,640px)}

/* 轮播指示器 */
.hero-dots{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.hero-dot{width:34px;height:4px;background:rgba(255,255,255,.3);cursor:pointer;transition:.3s;position:relative;overflow:hidden}
.hero-dot.active{background:rgba(255,255,255,.95)}
.hero-dot.active::after{content:"";position:absolute;inset:0;background:var(--primary-2);transform-origin:left;animation:dotProgress 5s linear forwards}
@keyframes dotProgress{from{transform:scaleX(0)}to{transform:scaleX(1)}}

.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.08);color:#fff;font-size:22px;cursor:pointer;z-index:5;display:flex;align-items:center;justify-content:center;transition:.3s}
.hero-arrow:hover{background:rgba(255,255,255,.22);border-color:rgba(255,255,255,.6)}
.hero-arrow.prev{left:28px}
.hero-arrow.next{right:28px}

.btn{display:inline-block;padding:clamp(11px,1.1vw,14px) clamp(22px,2.2vw,30px);
  font-weight:700;font-size:clamp(13px,1vw,15px);transition:.25s}
.btn-p{background:#fff;color:var(--primary)}
.btn-p:hover{transform:translateY(-3px);box-shadow:0 10px 28px rgba(0,0,0,.2)}
.btn-o{border:1.5px solid rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-o:hover{background:rgba(255,255,255,.14)}

/* ========== 导航自适应 ========== */
.nav{height:clamp(62px,6vw,76px)}
.logo{font-size:clamp(17px,1.4vw,20px)}
.logo img{height:clamp(33px,3.2vw,42px);width:auto}
.nav-links{gap:clamp(16px,2.2vw,32px)}
.nav-links a{font-size:clamp(13px,1vw,15px)}

/* ========== 数据条 ========== */
.stats{background:var(--light);border-bottom:1px solid var(--border)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:clamp(26px,3vw,42px) 0}
.stat{text-align:center;position:relative}
.stat::after{content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);width:1px;height:clamp(28px,3vw,40px);background:var(--border)}
.stat:last-child::after{display:none}
.stat .n{font-size:clamp(26px,2.6vw,38px);font-weight:800;color:var(--primary);letter-spacing:-.5px}
.stat .l{font-size:clamp(12px,1vw,14px);color:var(--muted);margin-top:6px}

/* ========== 通用区块 ========== */
section{padding:clamp(48px,6.5vw,88px) 0}
.sec-head{text-align:center;margin-bottom:clamp(32px,4vw,54px)}
.sec-head .en{color:var(--primary-2);letter-spacing:2px;font-size:clamp(11px,1vw,13px);font-weight:700;text-transform:uppercase}
.sec-head h2{font-size:clamp(22px,2.6vw,36px);color:var(--navy);font-weight:800;margin-top:8px;line-height:1.25}
.sec-head p{color:var(--muted);margin-top:12px;max-width:clamp(520px,55vw,720px);margin-inline:auto;font-size:clamp(13px,1.02vw,15px);line-height:1.8}
.bg-light{background:var(--light-2)}

/* ========== 图片占位框 ========== */
.img-placeholder{width:100%;background:linear-gradient(110deg,#e8eef7 8%,#f2f6fc 18%,#e8eef7 33%);
  background-size:200% 100%;animation:shimmer 2.4s linear infinite;position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:center;aspect-ratio:16/10;border:1px solid var(--border)}
.img-placeholder.square{aspect-ratio:1/1}
.img-placeholder.portrait{aspect-ratio:4/5}
.img-placeholder::before{content:"";position:absolute;inset:0;background-image:
  linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:30px 30px;opacity:.4}
.img-placeholder span{position:relative;z-index:2;color:var(--primary);font-size:13px;font-weight:600;
  background:rgba(255,255,255,.7);padding:8px 16px;border:1px dashed var(--primary);letter-spacing:.5px}

.section-img-wrap{margin-top:36px;display:grid;gap:24px}
.gallery-2{grid-template-columns:1fr 1fr}
.gallery-3{grid-template-columns:repeat(3,1fr)}
.gallery-2-1{grid-template-columns:2fr 1fr}

/* ========== 卡片 ========== */
.grid{display:grid;gap:clamp(16px,2vw,26px)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--border);padding:clamp(22px,2.3vw,32px);
  box-shadow:var(--shadow);transition:.3s cubic-bezier(.2,.7,.2,1);position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;width:0;height:2px;background:var(--primary);transition:width .4s ease}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--primary)}
.card:hover::before{width:100%}
.card:hover .ico{animation:floatY 1.8s ease-in-out infinite}
.card .ico{width:clamp(46px,4.3vw,56px);height:clamp(46px,4.3vw,56px);background:var(--light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:clamp(12px,1.3vw,18px);transition:.3s}
.card .ico svg{width:clamp(22px,2.1vw,28px);height:clamp(22px,2.1vw,28px);fill:var(--primary);stroke:var(--primary)}
.card h3{font-size:clamp(16px,1.45vw,20px);color:var(--navy);margin-bottom:10px;font-weight:700;line-height:1.35}
.card p{font-size:clamp(13px,1vw,14.5px);color:var(--muted);line-height:1.8}
.card ul{margin:10px 0 0 18px;font-size:clamp(13px,1vw,14.5px);color:var(--muted)}
.card ul li{margin:6px 0;line-height:1.75}
.card .img-placeholder{margin:calc(-1 * clamp(22px,2.3vw,32px)) calc(-1 * clamp(22px,2.3vw,32px)) clamp(16px,1.6vw,22px);aspect-ratio:16/9}

.card-img{display:block;width:100%;aspect-ratio:16/10;margin:-30px -30px 22px;background:var(--light)}
.card-img + h3{margin-top:0}

/* ========== 时间线 ========== */
.timeline{position:relative;max-width:880px;margin:0 auto;padding-left:clamp(22px,3vw,34px)}
.timeline::before{content:"";position:absolute;left:10px;top:6px;bottom:6px;width:2px;background:var(--primary);opacity:.25}
.tl-item{position:relative;padding:0 0 clamp(22px,2.6vw,34px) clamp(18px,2vw,30px)}
.tl-item::before{content:"";position:absolute;left:-28px;top:4px;width:14px;height:14px;background:var(--white);border:2px solid var(--primary);transform:rotate(45deg);z-index:2}
.tl-item.visible::before{animation:pulse 2s ease-in-out infinite}
.tl-item .yr{font-weight:800;color:var(--primary);font-size:clamp(14px,1.1vw,16px);letter-spacing:.5px}
.tl-item h4{font-size:clamp(15px,1.3vw,18px);color:var(--navy);margin:4px 0 3px}
.tl-item p{font-size:clamp(13px,1vw,14px);color:var(--muted);line-height:1.8}

/* ========== 特性列表 ========== */
.feat{display:flex;gap:14px;align-items:flex-start;margin:clamp(12px,1.2vw,16px) 0}
.feat .dot{flex:0 0 10px;width:10px;height:10px;background:var(--primary);margin-top:10px;transform:rotate(45deg);flex-shrink:0}
.feat p{font-size:clamp(13.5px,1.05vw,15.5px);color:var(--text);line-height:1.8}

/* ========== 大特性区 ========== */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,4vw,54px);align-items:center;margin:clamp(36px,5vw,68px) 0}
.feature-row.reverse{direction:rtl}
.feature-row.reverse > *{direction:ltr}
.feature-text h3{font-size:clamp(20px,2vw,28px);color:var(--navy);font-weight:800;margin-bottom:12px;line-height:1.3}
.feature-text > p{color:var(--muted);font-size:clamp(13.5px,1.05vw,15.5px);margin-bottom:18px;line-height:1.85}

/* ========== 页脚 ========== */
footer{background:var(--navy);color:#cdddf5;padding:clamp(42px,4.5vw,62px) 0 clamp(20px,2vw,30px);margin-top:24px}
.foot{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:clamp(22px,3vw,42px)}
.foot h4{color:#fff;font-size:clamp(15px,1.2vw,17px);margin-bottom:14px;font-weight:700;position:relative;padding-bottom:12px}
.foot h4::after{content:"";position:absolute;left:0;bottom:0;width:40px;height:2px;background:var(--primary-2)}
.foot a,.foot p{color:#cdddf5;font-size:clamp(12.5px,1vw,14px);display:block;margin:6px 0;line-height:1.85;transition:.2s}
.foot a:hover{color:#fff;transform:translateX(3px)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:clamp(26px,3vw,40px);padding-top:16px;
  text-align:center;font-size:clamp(11.5px,1vw,13px);color:#9fb6d6}

/* ========== 深色图片占位 ========== */
.img-placeholder.dark{background:linear-gradient(110deg,#112849 8%,#1b3762 18%,#112849 33%);
  background-size:200% 100%;border:1px solid rgba(47,123,240,.25);aspect-ratio:16/10}
.img-placeholder.dark::before{background-image:
  linear-gradient(rgba(47,123,240,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(47,123,240,.12) 1px,transparent 1px)}
.img-placeholder.dark span{color:#8eb7ff;background:rgba(10,46,92,.6);border:1px dashed #2f7bf0}

/* ========== 深色板块 ========== */
.section-dark{background:linear-gradient(160deg,#071b3a 0%,#0a2e5c 55%,#0f3a73 100%);color:#e8eefc;position:relative;overflow:hidden}
.section-dark::before{content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 20% 20%,rgba(47,123,240,.18) 0,transparent 40%),
    radial-gradient(circle at 85% 75%,rgba(47,123,240,.15) 0,transparent 45%),
    linear-gradient(rgba(47,123,240,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(47,123,240,.06) 1px,transparent 1px);
  background-size:auto,auto,44px 44px,44px 44px;pointer-events:none}
.section-dark::after{content:"";position:absolute;top:40px;right:40px;width:280px;height:280px;
  background:conic-gradient(from 120deg,rgba(47,123,240,.18),transparent 45%,transparent 80%,rgba(47,123,240,.18));
  filter:blur(40px);pointer-events:none;animation:darkGlow 9s ease-in-out infinite}
@keyframes darkGlow{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-30px,20px) scale(1.1)}}
.section-dark > .wrap{position:relative;z-index:2}
.section-dark .sec-head h2{color:#fff}
.section-dark .sec-head .en{color:#6fa8ff}
.section-dark .sec-head p{color:#9fb6d6}

/* ========== 深色大卡片 ========== */
.pillar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.pillar-card{position:relative;background:rgba(255,255,255,.04);border:1px solid rgba(47,123,240,.25);
  padding:24px;transition:.45s cubic-bezier(.2,.7,.2,1);overflow:hidden;cursor:pointer}
.pillar-card::before{content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(47,123,240,0) 0%,rgba(47,123,240,.18) 100%);
  opacity:0;transition:opacity .45s ease;pointer-events:none}
.pillar-card::after{content:"";position:absolute;right:-40%;top:-40%;width:80%;height:80%;
  background:radial-gradient(circle,rgba(47,123,240,.35) 0,transparent 60%);
  opacity:0;transition:opacity .5s ease, transform .5s ease;transform:scale(.8);pointer-events:none}
.pillar-card:hover{transform:translateY(-6px);border-color:rgba(47,123,240,.7);
  box-shadow:0 20px 50px rgba(0,0,0,.35),0 0 0 1px rgba(47,123,240,.3) inset}
.pillar-card:hover::before{opacity:1}
.pillar-card:hover::after{opacity:1;transform:scale(1) translate(-10%,10%)}
.pillar-card:hover .pillar-ico{transform:translateY(-4px) scale(1.05);color:#fff;background:rgba(47,123,240,.35)}
.pillar-card:hover .pillar-title{color:#fff}
.pillar-card:hover .pillar-arrow{transform:translateX(8px);opacity:1;color:#fff}
.pillar-card .pillar-img{aspect-ratio:4/3;margin:-24px -24px 20px;overflow:hidden;position:relative}
.pillar-card .pillar-img .img-placeholder{width:100%;height:100%;aspect-ratio:auto;border:0 none}
.pillar-card .pillar-ico{width:50px;height:50px;background:rgba(47,123,240,.18);color:#8eb7ff;
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;transition:.4s cubic-bezier(.2,.7,.2,1)}
.pillar-card .pillar-ico svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:2}
.pillar-card .pillar-title{font-size:20px;color:#e8eefc;font-weight:700;margin-bottom:8px;transition:.3s}
.pillar-card .pillar-desc{font-size:14px;color:#9fb6d6;line-height:1.75}
.pillar-card .pillar-arrow{display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:13px;color:#6fa8ff;font-weight:600;opacity:.75;transition:.35s;letter-spacing:.5px}

/* ========== 核心产业新版式：大图区 ========== */
.industry-wrap{position:relative}
.industry-stage{position:relative;display:grid;grid-template-columns:1.45fr 1fr;gap:0;min-height:460px;
  border:1px solid var(--border);background:#fff;box-shadow:var(--shadow);overflow:hidden}
.industry-stage .big-img{position:relative;overflow:hidden}
.industry-stage .big-img .img-placeholder{width:100%;height:100%;aspect-ratio:auto;border:0 none}
.industry-stage .big-img::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(10,46,92,.85) 100%);pointer-events:none}
.industry-stage .big-img .big-label{position:absolute;left:30px;bottom:24px;z-index:3;color:#fff;
  max-width:80%}
.industry-stage .big-img .big-label .tagline{font-size:12px;letter-spacing:3px;opacity:.85;margin-bottom:8px;text-transform:uppercase;color:#8eb7ff}
.industry-stage .big-img .big-label h3{font-size:28px;font-weight:800;line-height:1.25}
.industry-stage .big-img .big-label p{margin-top:10px;font-size:14px;opacity:.9;max-width:520px;line-height:1.75}
.industry-stage .big-img .shine{position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.18) 50%,transparent 70%);
  transform:translateX(-100%);opacity:0;transition:transform .8s ease, opacity .2s}
.industry-stage:hover .big-img .shine{animation:shineSweep 1.2s ease forwards}
@keyframes shineSweep{0%{transform:translateX(-100%);opacity:0}30%{opacity:1}100%{transform:translateX(100%);opacity:0}}
.industry-stage .side-list{display:flex;flex-direction:column;border-left:1px solid var(--border)}
.industry-stage .side-list .item{position:relative;padding:20px 24px;border-bottom:1px solid var(--border);
  cursor:pointer;transition:.35s cubic-bezier(.2,.7,.2,1);display:flex;align-items:center;gap:16px;flex:1}
.industry-stage .side-list .item:last-child{border-bottom:0}
.industry-stage .side-list .item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--primary);transform:scaleY(0);transform-origin:top;transition:transform .35s ease}
.industry-stage .side-list .item:hover,.industry-stage .side-list .item.active{background:var(--light-2);padding-left:30px}
.industry-stage .side-list .item:hover::before,.industry-stage .side-list .item.active::before{transform:scaleY(1)}
.industry-stage .side-list .item .item-ico{flex:0 0 44px;width:44px;height:44px;background:var(--light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;transition:.35s}
.industry-stage .side-list .item:hover .item-ico,.industry-stage .side-list .item.active .item-ico{
  background:var(--primary);color:#fff;transform:scale(1.08)}
.industry-stage .side-list .item .item-ico svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2}
.industry-stage .side-list .item .item-meta{flex:1;min-width:0}
.industry-stage .side-list .item .item-meta h4{font-size:16px;color:var(--navy);font-weight:700;margin-bottom:4px}
.industry-stage .side-list .item .item-meta p{font-size:13px;color:var(--muted);line-height:1.6}
.industry-stage .side-list .item .item-arrow{color:var(--primary);opacity:0;transform:translateX(-6px);transition:.35s;flex-shrink:0;font-weight:700}
.industry-stage .side-list .item:hover .item-arrow,.industry-stage .side-list .item.active .item-arrow{opacity:1;transform:translateX(0)}

/* ========== 中屏：≤ 1180px ========== */
@media(max-width:1180px){
  .pillar-grid{grid-template-columns:repeat(2,1fr)}
  .g4{grid-template-columns:repeat(2,1fr)}
  .nav-links{gap:22px}
  .industry-stage{grid-template-columns:1.15fr 1fr}
  .about-hero-grid{grid-template-columns:1fr 1fr}
}

.about-hero-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:clamp(20px,3vw,40px);align-items:stretch;margin-top:clamp(24px,3vw,40px)}
.about-patents{display:grid;grid-template-columns:1fr 1fr;gap:12px 20px}

/* ========== 小屏：≤ 900px ========== */
@media(max-width:900px){
  .about-hero-grid{grid-template-columns:1fr}
  .about-hero-grid > div:first-child{min-height:260px}
  .about-patents{grid-template-columns:1fr}
  .back-top{right:18px;bottom:24px;width:46px;height:46px}
  .nav-links{position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;
    gap:0;padding:10px 0;box-shadow:var(--shadow);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 24px;width:100%}
  .nav-links a.active::after{display:none}
  .nav-toggle{display:block}
  .stats .wrap{grid-template-columns:repeat(2,1fr);gap:0}
  .stat{padding:16px 0}
  .stat::after{display:none}
  .g3,.g2,.gallery-2,.gallery-3,.gallery-2-1{grid-template-columns:1fr}
  .feature-row,.feature-row.reverse{grid-template-columns:1fr;direction:ltr;gap:26px;margin:32px 0}
  .hero-arrow{width:40px;height:40px;font-size:18px}
  .hero-arrow.prev{left:10px}
  .hero-arrow.next{right:10px}
  .hero-dots{bottom:20px;gap:8px}
  .foot{grid-template-columns:1fr;gap:26px}
  .industry-stage{grid-template-columns:1fr;min-height:auto}
  .industry-stage .big-img{min-height:260px}
  .industry-stage .big-img .big-label{left:18px;right:18px;bottom:18px;max-width:none}
  .industry-stage .side-list{border-left:0 none;border-top:1px solid var(--border)}
  .pillar-card .pillar-img{aspect-ratio:16/9}
  .section-img-wrap{margin-top:26px;gap:16px}
}

/* ========== 超小屏：≤ 640px ========== */
@media(max-width:640px){
  .wrap{width:min(1180px,92%);}
  .pillar-grid,.g4{grid-template-columns:1fr}
  .hero{height:400px;padding:0;margin:0}
  .hero-inner{height:230px;padding:0;margin:0}
  .hero-arrow{display:none}
  .hero-dots{bottom:16px}
  .hero-cta .btn{width:100%;text-align:center}
  .stats .wrap{grid-template-columns:repeat(2,1fr)}
  .stat{padding:14px 0}
  .stat .n{font-size:28px}
  .industry-stage .side-list .item{padding:14px 16px;gap:12px}
  .industry-stage .big-img .big-label h3{font-size:20px}
  .industry-stage .big-img .big-label p{display:none}
  .card{padding:20px}
  section{padding:42px 0}
  .hero-dot{width:26px}
}

/* ── 图片网格（产品/制造页） ── */
.img-grid{display:grid;gap:20px;grid-template-columns:repeat(3,1fr)}
.img-card{border-radius:14px;overflow:hidden;border:1px solid var(--border);
  box-shadow:var(--shadow);transition:.28s;background:#fff}
.img-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.img-card img,.img-card .card-img{width:100%;height:210px;object-fit:cover;display:block;
  background:var(--light)}
.img-card .card-body{padding:18px 20px}
.img-card h3{font-size:16px;color:var(--navy);margin-bottom:6px;font-weight:700}
.img-card p{font-size:13px;color:var(--muted);line-height:1.6}

/* ── 荣誉时间线 ── */
.honor-list{display:grid;gap:16px;grid-template-columns:repeat(2,1fr)}
.honor-item{display:flex;gap:14px;align-items:flex-start;background:#fff;
  border:1px solid var(--border);border-radius:12px;padding:16px 20px;box-shadow:var(--shadow)}
.honor-item .yr{flex:0 0 52px;height:52px;background:var(--primary);color:#fff;
  border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:13px;text-align:center;line-height:1.2}
.honor-item h4{font-size:15px;color:var(--navy);margin-bottom:3px}
.honor-item p{font-size:13px;color:var(--muted)}

/* ── 特性标签 ── */
.tag-pill{display:inline-block;padding:4px 12px;background:var(--light);
  color:var(--primary);border-radius:20px;font-size:12px;font-weight:600;margin:3px}

/* ── 合作客户 ── */
.partner-row{display:flex;gap:20px;flex-wrap:wrap;justify-content:center}
.partner-logo{height:64px;opacity:.75;filter:grayscale(1);transition:.2s}
.partner-logo:hover{opacity:1;filter:none}

/* ── 团队卡片 ── */
.team-grid{display:grid;gap:24px;grid-template-columns:repeat(3,1fr)}
.team-card{text-align:center;background:#fff;border:1px solid var(--border);
  border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.team-card img{width:100%;height:220px;object-fit:cover;background:var(--light)}
.team-card .info{padding:16px}
.team-card h4{font-size:16px;color:var(--navy);font-weight:700}
.team-card p{font-size:13px;color:var(--muted);margin-top:4px}

/* ── 流程步骤 ── */
.step-row{display:flex;gap:0;align-items:center;justify-content:center;flex-wrap:wrap}
.step-item{flex:1;min-width:160px;max-width:240px;text-align:center;padding:20px 12px;
  position:relative}
.step-item::after{content:"→";position:absolute;right:-14px;top:50%;transform:translateY(-50%);
  color:var(--primary);font-size:20px;font-weight:700}
.step-item:last-child::after{display:none}
.step-num{width:52px;height:52px;border-radius:50%;background:var(--primary);
  color:#fff;font-size:22px;font-weight:900;display:flex;align-items:center;
  justify-content:center;margin:0 auto 12px}
.step-item h4{font-size:15px;color:var(--navy);font-weight:700;margin-bottom:6px}
.step-item p{font-size:13px;color:var(--muted)}