@charset "utf-8";

/* ============================================================
   湖南海润电气 — 工业电气化主题 (Industrial / Electrical)
   设计语言：深钢色控制面板 + 电光蓝 + 电压橙
   蓝图网格 · HUD 边角 · 等宽技术标签
   ============================================================ */
:root{
  /* 钢色系（深） */
  --steel-950:#070d13;
  --steel-900:#0c141d;
  --steel-850:#101b25;
  --steel-800:#15212d;
  --steel-700:#1d2c3a;
  --steel-600:#27384a;
  /* 电光蓝（主） + 电压橙（辅） */
  --brand:#0e8fc7;
  --brand-2:#19c3ff;
  --voltage:#ff8c1a;
  --grad:linear-gradient(135deg,#0e8fc7 0%,#19c3ff 100%);
  --grad-steel:linear-gradient(135deg,#0c141d 0%,#1d2c3a 100%);
  /* 文字 / 描边 */
  --ink:#0c141d;
  --ink-2:#3f4f5c;
  --ink-3:#74858f;
  --line:#d7e0e8;
  --line-soft:#e6ecf1;
  /* 背景（冷铝灰，保证内容可读） */
  --bg:#e8edf1;
  --bg-soft:#f1f5f8;
  --radius:12px;
  --radius-sm:8px;
  --card-img-ratio:4 / 3;
  --shadow-sm:0 2px 10px rgba(12,20,29,.07);
  --shadow:0 14px 34px rgba(12,20,29,.12);
  --shadow-lg:0 22px 54px rgba(14,143,199,.28);
  --ease:cubic-bezier(.16,1,.3,1);
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,"Courier New",monospace;
}

/* ===== Reset & Base ===== */
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:"PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  font-size:15px;color:var(--ink);line-height:1.75;background:var(--bg);-webkit-font-smoothing:antialiased;}
::selection{background:rgba(25,195,255,.25);color:var(--steel-900);}
a{text-decoration:none;color:inherit;transition:color .3s var(--ease),transform .3s var(--ease);}
ul,ol{list-style:none;}
img{max-width:100%;height:auto;display:block;}
.container{width:1200px;margin:0 auto;}
.clearfix:after{content:"";display:block;clear:both;}
.page-main{min-height:60vh;}

/* ===== Reveal animation ===== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;}}

/* ============================================================
   Header — 白色控制面板 + 顶部 2px 电光蓝识别条
   ============================================================ */
.site-header{position:sticky;top:0;z-index:1000;
  background:#ffffff;
  background-image:
    linear-gradient(rgba(14,143,199,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(14,143,199,.05) 1px,transparent 1px);
  background-size:28px 28px;
  border-top:2px solid var(--brand-2);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 14px rgba(12,20,29,.06);
  transition:box-shadow .3s var(--ease),background-color .3s var(--ease);}
.site-header.scrolled{background:rgba(255,255,255,.97);
  box-shadow:0 10px 30px rgba(12,20,29,.10);
  border-bottom-color:rgba(14,143,199,.22);}
.site-header .container{height:88px;display:flex;align-items:center;justify-content:space-between;position:relative;}
.logo{display:flex;align-items:center;gap:12px;}
.logo img{height:58px;object-fit:contain;filter:drop-shadow(0 2px 4px rgba(12,20,29,.08));}
.logo-text h1{font-size:21px;font-weight:800;letter-spacing:1px;line-height:1.1;
  background:linear-gradient(135deg,var(--steel-900) 0%,var(--brand) 100%);-webkit-background-clip:text;background-clip:text;color:transparent;}
.logo-text p{font-size:10px;color:var(--ink-3);text-transform:uppercase;letter-spacing:2px;margin-top:3px;font-family:var(--mono);}

.nav{display:flex;align-items:center;}
.nav > li{position:relative;}
.nav > li.has-mega{position:relative;}
.nav > li > a{font-size:15px;color:var(--steel-800);font-weight:500;display:block;padding:28px 20px;position:relative;letter-spacing:.5px;transition:color .3s var(--ease);}
.nav > li > a:hover,.nav > li.active > a,.nav > li.has-mega.active > a{color:var(--brand);}
.nav > li > a::after{content:"";position:absolute;bottom:18px;left:50%;width:0;height:3px;border-radius:3px;
  background:var(--grad);box-shadow:0 0 6px rgba(25,195,255,.45);transform:translateX(-50%);transition:width .3s var(--ease);}
.nav > li > a:hover::after,.nav > li.active > a::after,.nav > li.has-mega.active > a::after{width:26px;}
.caret{display:inline-block;margin-left:6px;border:4px solid transparent;border-top-color:currentColor;vertical-align:middle;transition:transform .3s var(--ease);}
.has-mega:hover .caret{transform:rotate(180deg);}

/* ===== Mega Menu — 技术蓝图卡片 ===== */
.mega-menu{position:absolute;top:calc(100% + 2px);left:50%;transform:translateX(-50%);
  width:auto;min-width:560px;max-width:min(94vw,760px);
  background:#f3f7fa;border:1px solid rgba(14,143,199,.25);border-radius:12px;
  box-shadow:0 24px 60px rgba(8,14,20,.30);
  background-image:linear-gradient(rgba(14,143,199,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(14,143,199,.05) 1px,transparent 1px);
  background-size:22px 22px;
  display:none;z-index:1200;padding:8px;}
.mega-menu::before{content:"";position:absolute;top:-7px;left:50%;transform:translateX(-50%) rotate(45deg);
  width:14px;height:14px;background:#f3f7fa;border-left:1px solid rgba(14,143,199,.25);border-top:1px solid rgba(14,143,199,.25);
  border-radius:3px 0 0 0;}
.has-mega:hover > .mega-menu{display:block;animation:fadeDown .25s var(--ease);}
@keyframes fadeDown{from{opacity:0;transform:translateX(-50%) translateY(-8px);}to{opacity:1;transform:translateX(-50%);}}
.mega-inner{position:relative;z-index:1;padding:18px 20px 12px;}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 24px;}
.mega-card{display:flex;gap:13px;align-items:flex-start;padding:9px;border-radius:10px;transition:background .25s var(--ease),transform .25s var(--ease);}
.mega-card:hover{background:rgba(14,143,199,.08);transform:translateY(-2px);}
.mega-thumb{flex:0 0 62px;width:62px;height:62px;border-radius:10px;overflow:hidden;display:block;
  background:#e9eef2;box-shadow:0 4px 12px rgba(8,14,20,.18), inset 0 0 0 1px rgba(14,143,199,.15);}
.mega-thumb img{width:100%;height:100%;object-fit:contain;display:block;transition:transform .35s var(--ease);}
.mega-card:hover .mega-thumb img{transform:scale(1.08);}
.mega-card-body{flex:1;min-width:0;}
.mega-card-body h4{font-size:15px;margin-bottom:7px;line-height:1.3;}
.mega-card-body h4 a{color:var(--steel-800);font-weight:700;transition:color .3s;}
.mega-card-body h4 a:hover{color:var(--brand);}
.mega-sub{display:flex;flex-wrap:wrap;gap:3px 13px;}
.mega-sub li{line-height:1.45;}
.mega-sub li a{color:var(--ink-2);font-size:13px;display:inline-block;transition:color .3s,transform .2s;}
.mega-sub li a:hover{color:var(--brand);transform:translateX(3px);}
.mega-foot{margin-top:4px;padding-top:11px;border-top:1px dashed rgba(14,143,199,.3);text-align:center;}
.mega-all{display:inline-block;color:var(--brand);font-weight:700;font-size:14px;text-decoration:none;
  font-family:var(--mono);letter-spacing:1px;}
.mega-all:hover{text-decoration:underline;}

/* 产品中心下拉：两行图片链接（3×2） */
.mega-grid.mega-img-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px 14px;padding:4px 2px;}
.mega-img-link{display:block;text-align:center;text-decoration:none;transition:transform .25s var(--ease);}
.mega-img-link:hover{transform:translateY(-3px);}
.mega-img{display:block;height:78px;border-radius:10px;overflow:hidden;background:#e9eef2;
  box-shadow:0 2px 8px rgba(8,14,20,.12), inset 0 0 0 1px rgba(14,143,199,.18);position:relative;}
.mega-img img{width:100%;height:100%;object-fit:contain;display:block;transition:transform .4s var(--ease);}
.mega-img-link:hover .mega-img img{transform:scale(1.08);}
.mega-img-label{display:block;margin-top:7px;font-size:13px;color:var(--ink-2);line-height:1.35;transition:color .25s var(--ease);}
.mega-img-link:hover .mega-img-label{color:var(--brand);font-weight:600;}

/* ===== Mobile menu toggle ===== */
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;}
.menu-toggle span{width:24px;height:2px;background:var(--brand);display:block;border-radius:2px;transition:.3s;}

/* ============================================================
   Banner — 深钢底 + 蓝图网格 + 电光晕染
   ============================================================ */
.banner{position:relative;height:560px;overflow:hidden;background:var(--steel-950);}
.banner-slide{position:absolute;width:100%;height:100%;background-size:cover;background-position:center;opacity:0;transform:scale(1.06);transition:opacity 1.1s ease-in-out, transform 6s ease-out;}
.banner-slide.active{opacity:1;transform:scale(1);}
.banner-slide::before{content:"";position:absolute;inset:0;
  background:
    linear-gradient(120deg, rgba(7,13,19,.84) 0%, rgba(14,143,199,.42) 100%),
    linear-gradient(rgba(25,195,255,.07) 1px, transparent 1px) 0 0 / 46px 46px,
    linear-gradient(90deg, rgba(25,195,255,.07) 1px, transparent 1px) 0 0 / 46px 46px;}
.banner-slide::after{content:"";position:absolute;right:-120px;top:-120px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,195,255,.30),transparent 70%);}
.banner-slide .container{height:100%;display:flex;align-items:center;position:relative;z-index:2;}
.banner-text{color:#fff;max-width:640px;}
.banner-text h2{font-size:46px;font-weight:800;margin-bottom:16px;line-height:1.25;letter-spacing:1px;
  text-shadow:0 4px 24px rgba(0,0,0,.35);}
.banner-text h3{font-size:20px;color:#bfeaff;margin-bottom:20px;font-weight:500;letter-spacing:.5px;
  font-family:var(--mono);text-transform:uppercase;}
.banner-text p{font-size:17px;opacity:.92;letter-spacing:.5px;}
.banner-dots{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5;}
.banner-dots span{width:10px;height:10px;border-radius:2px;background:rgba(255,255,255,.35);cursor:pointer;transition:.3s;}
.banner-dots span.active{background:var(--brand-2);width:32px;border-radius:2px;box-shadow:0 0 10px rgba(25,195,255,.7);}
.banner-link{position:absolute;inset:0;z-index:3;cursor:pointer;display:none;}
.banner-link:hover{outline:2px solid rgba(25,195,255,.5);}

/* ===== Section Title — 等宽技术眉标 + 电光分隔 ===== */
.section-title{text-align:center;padding:80px 0 46px;}
.section-title h2{font-size:34px;color:var(--steel-900);font-weight:800;margin-bottom:12px;letter-spacing:.5px;}
.section-title p{font-size:12px;color:var(--brand);text-transform:uppercase;letter-spacing:4px;font-family:var(--mono);font-weight:600;}
.section-title .line{width:60px;height:4px;background:var(--grad);border-radius:4px;margin:16px auto 0;
  box-shadow:0 0 12px rgba(25,195,255,.5);position:relative;}
.section-title .line::after{content:"";position:absolute;left:50%;top:50%;width:8px;height:8px;transform:translate(-50%,-50%) rotate(45deg);
  background:var(--voltage);box-shadow:0 0 8px rgba(255,140,26,.8);}

/* ===== Product Section ===== */
.products-section{background:var(--bg);padding-bottom:80px;}
.product-list{display:flex;flex-wrap:wrap;margin:0 -12px;}
.product-item{width:25%;padding:12px;}
.product-card{background:#fff;border-radius:var(--radius);overflow:hidden;transition:all .4s var(--ease);
  border:1px solid var(--line);display:block;box-shadow:var(--shadow-sm);position:relative;}
.product-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease);z-index:4;}
.product-card::after{content:"";position:absolute;right:10px;bottom:10px;width:16px;height:16px;
  border-right:2px solid var(--brand-2);border-bottom:2px solid var(--brand-2);opacity:0;transition:opacity .35s var(--ease);z-index:4;}
.product-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-8px);border-color:rgba(14,143,199,.4);}
.product-card:hover::before{transform:scaleX(1);}
.product-card:hover::after{opacity:.9;}
.product-card .img{aspect-ratio:var(--card-img-ratio);overflow:hidden;background:var(--bg-soft);position:relative;}
.product-card .img::after{content:"";position:absolute;inset:0;background:var(--grad);opacity:0;transition:.4s;mix-blend-mode:overlay;}
.product-card:hover .img::after{opacity:.16;}
.product-card .img img{width:100%;height:100%;object-fit:contain;padding:14px;transition:transform .6s var(--ease);}
.product-card:hover .img img{transform:scale(1.08);}
.product-card h3{font-size:16px;padding:18px 18px 8px;color:var(--steel-900);font-weight:700;}
.product-card p{font-size:13px;color:var(--ink-3);padding:0 18px 22px;line-height:1.7;
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}

/* ===== Page Banner (sub pages) ===== */
.page-banner{height:300px;background-size:cover;background-position:center;display:flex;align-items:center;
  justify-content:center;color:#fff;text-align:center;position:relative;background-color:var(--steel-900);}
.page-banner::before{content:"";position:absolute;inset:0;
  background:
    linear-gradient(120deg, rgba(7,13,19,.86), rgba(14,143,199,.5)),
    linear-gradient(rgba(25,195,255,.06) 1px, transparent 1px) 0 0 / 40px 40px,
    linear-gradient(90deg, rgba(25,195,255,.06) 1px, transparent 1px) 0 0 / 40px 40px;}
.page-banner .container{position:relative;z-index:2;}
.page-banner h2{font-size:38px;font-weight:800;margin-bottom:10px;letter-spacing:1px;text-shadow:0 4px 20px rgba(0,0,0,.4);}
.page-banner p{font-size:12px;opacity:.9;text-transform:uppercase;letter-spacing:4px;font-family:var(--mono);color:#bfeaff;}

/* ===== Content Section ===== */
.content-section{background:var(--bg);padding:70px 0 90px;min-height:400px;}
.content-section.alt{background:var(--bg-soft);}
.content-section .container{max-width:1100px;}
.content-box{font-size:16px;line-height:2;color:var(--ink-2);}
.content-box p{margin-bottom:18px;}
.content-box img{max-width:100%;border-radius:var(--radius-sm);margin:25px 0;box-shadow:var(--shadow-sm);}
.content-box h1,.content-box h2,.content-box h3{margin:18px 0 12px;color:var(--steel-900);font-weight:700;}
.content-box ul{list-style:disc;padding-left:24px;margin-bottom:18px;}
.content-box ul li{margin-bottom:8px;}

/* ===== Tech title (产品介绍/技术参数) + spec table ===== */
.content-box .tech-title{font-size:20px;font-weight:800;color:var(--steel-900);margin:26px 0 14px;padding:8px 0 8px 16px;
  border-left:4px solid var(--brand);letter-spacing:.5px;position:relative;}
.content-box .tech-lead{font-size:15px;line-height:1.85;color:var(--ink-2);background:var(--bg-soft);
  border-left:3px solid var(--voltage);padding:14px 18px;border-radius:0 8px 8px 0;margin-bottom:24px;}
.content-box .spec-table{width:100%;border-collapse:collapse;margin:8px 0 28px;font-size:14px;box-shadow:var(--shadow-sm);
  border-radius:8px;overflow:hidden;border:1px solid var(--line);}
.content-box .spec-table th,.content-box .spec-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);}
.content-box .spec-table th{background:var(--grad-steel);color:#eaf6ff;font-weight:600;font-size:13px;
  text-transform:uppercase;letter-spacing:.5px;border-bottom:2px solid var(--brand);}
.content-box .spec-table tr:last-child td{border-bottom:none;}
.content-box .spec-table tbody tr:nth-child(even){background:#f5f8fa;}
.content-box .spec-table tbody tr:hover{background:rgba(25,195,255,.08);}
.content-box .client-tag{display:inline-block;margin:0 8px 8px 0;padding:4px 14px;background:#e7f1f8;
  border:1px solid #bcd9ea;border-radius:4px;color:#0e6e9c;font-size:13px;line-height:1.6;font-family:var(--mono);}

/* ===== Two-column product layout ===== */
.product-layout{display:flex;gap:40px;align-items:flex-start;}
.category-nav{width:260px;flex-shrink:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;position:sticky;top:96px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;}
.category-nav::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--grad);}
.cat-title{font-size:18px;color:var(--steel-900);margin-bottom:14px;padding-bottom:12px;border-bottom:2px solid var(--brand);
  font-weight:800;display:flex;align-items:center;gap:8px;letter-spacing:.5px;}
.cat-title::before{content:"";width:6px;height:18px;border-radius:2px;background:var(--grad);display:inline-block;
  box-shadow:0 0 8px rgba(25,195,255,.5);}
.cat-list > li{margin-bottom:6px;}
.cat-list .cat-parent{display:block;padding:11px 14px;font-weight:600;color:var(--steel-800);background:var(--bg-soft);
  border-radius:var(--radius-sm);transition:.3s;}
.cat-list .cat-parent:hover{background:var(--grad);color:#fff;box-shadow:var(--shadow);}
.cat-list li.active > .cat-parent{background:var(--grad);color:#fff;box-shadow:var(--shadow);}
.cat-sub{padding:6px 0 8px 14px;}
.cat-sub li a{display:block;padding:8px 14px;color:var(--ink-2);font-size:14px;border-radius:var(--radius-sm);transition:.3s;}
.cat-sub li a:hover,.cat-sub li.active a{color:var(--brand);background:#e7f1f8;}

.detail{flex:1;min-width:0;}
.detail-head{display:flex;gap:24px;align-items:center;margin-bottom:26px;padding-bottom:26px;border-bottom:1px solid var(--line);}
.detail-head img{width:220px;aspect-ratio:var(--card-img-ratio);height:auto;object-fit:contain;border-radius:var(--radius-sm);
  flex-shrink:0;background:#fff;padding:10px;box-shadow:var(--shadow-sm);}
.detail-head h1{font-size:28px;color:var(--steel-900);margin-bottom:10px;font-weight:800;letter-spacing:.5px;}
.detail-head .summary{color:var(--ink-3);font-size:15px;}
.pdf-download{margin-top:30px;}
.pdf-btn{background:var(--grad)!important;box-shadow:var(--shadow);}
.pdf-btn:hover{background:var(--grad)!important;filter:brightness(1.06);color:#fff;transform:translateY(-2px);}

/* ===== Features Band (homepage) — 钢制徽章 + CSS 绘制 SVG 图标 ===== */
.features-section{background:var(--bg-soft);padding:64px 0 70px;
  background-image:linear-gradient(rgba(14,143,199,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(14,143,199,.035) 1px,transparent 1px);
  background-size:40px 40px;}
.feature-list{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:10px;}
.feature-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 26px;
  box-shadow:var(--shadow-sm);transition:all .4s var(--ease);text-align:center;position:relative;overflow:hidden;}
.feature-item::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease);}
.feature-item::after{content:"";position:absolute;right:10px;bottom:10px;width:16px;height:16px;
  border-right:2px solid var(--brand-2);border-bottom:2px solid var(--brand-2);opacity:0;transition:opacity .35s var(--ease);}
.feature-item:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:rgba(14,143,199,.4);}
.feature-item:hover::before{transform:scaleX(1);}
.feature-item:hover::after{opacity:.9;}
.feature-icon{width:64px;height:64px;border-radius:14px;background:var(--grad);display:flex;align-items:center;
  justify-content:center;margin:0 auto 18px;box-shadow:0 10px 24px rgba(14,143,199,.35), inset 0 0 0 1px rgba(255,255,255,.2);
  position:relative;font-size:0;color:transparent;}
.feature-icon::before{content:"";width:34px;height:34px;background:center/contain no-repeat;}
.feature-item:nth-child(1) .feature-icon::before{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='%23ffffff'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Crect%20x='6'%20y='6'%20width='12'%20height='12'%20rx='1'/%3E%3Cpath%20d='M9%201v3M15%201v3M9%2020v3M15%2020v3M1%209h3M1%2015h3M20%209h3M20%2015h3'/%3E%3C/svg%3E");}
.feature-item:nth-child(2) .feature-icon::before{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='%23ffffff'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Cpath%20d='M12%202l8%203v6c0%205-3.5%208-8%2011-4.5-3-8-6-8-11V5z'/%3E%3Cpath%20d='M9%2012l2%202%204-4'/%3E%3C/svg%3E");}
.feature-item:nth-child(3) .feature-icon::before{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='%23ffffff'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Cpath%20d='M14.7%206.3a1%201%200%200%200%200%201.4l1.6%201.6a1%201%200%200%200%201.4%200l3.77-3.77a6%206%200%200%201-7.94%207.94l-6.91%206.91a2.12%202.12%200%200%201-3-3l6.91-6.91a6%206%200%200%201%207.94-7.94l-3.76%203.76z'/%3E%3C/svg%3E");}
.feature-item:nth-child(4) .feature-icon::before{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='%23ffffff'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Cpath%20d='M13%202L3%2014h9l-1%208%2010-12h-9z'/%3E%3C/svg%3E");}
.feature-item h3{font-size:18px;color:var(--steel-900);font-weight:800;margin-bottom:10px;}
.feature-item p{font-size:14px;color:var(--ink-2);line-height:1.8;}
.feature-item{animation:fadeUp .6s var(--ease) both;}
.feature-item:nth-child(2){animation-delay:.08s;}
.feature-item:nth-child(3){animation-delay:.16s;}
.feature-item:nth-child(4){animation-delay:.24s;}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px);}to{opacity:1;transform:none;}}
@media (prefers-reduced-motion:reduce){.feature-item{animation:none;}}

/* ===== CTA Band — 深钢 + 电压橙闪电水印 ===== */
.cta-band{background:var(--grad-steel);color:#fff;padding:56px 0;position:relative;overflow:hidden;
  border-top:1px solid rgba(25,195,255,.2);}
.cta-band::before{content:"";position:absolute;right:-40px;bottom:-60px;width:300px;height:300px;
  background:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%3E%3Cpath%20d='M13%202L3%2014h9l-1%208%2010-12h-9z'%20fill='%23ff8c1a'/%3E%3C/svg%3E") center/contain no-repeat;
  opacity:.10;}
.cta-band::after{content:"";position:absolute;left:-100px;top:-100px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,195,255,.18),transparent 70%);}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px;position:relative;z-index:2;flex-wrap:wrap;}
.cta-inner h2{font-size:28px;font-weight:800;margin-bottom:8px;letter-spacing:.5px;}
.cta-inner p{font-size:15px;opacity:.9;}
.cta-band .btn{background:#fff;color:var(--brand);box-shadow:0 10px 30px rgba(0,0,0,.25);}
.cta-band .btn:hover{background:var(--voltage);color:#fff;transform:translateY(-3px);}

/* ===== Solution / Case Cards ===== */
.solution-list,.case-list{display:flex;flex-wrap:wrap;margin:0 -12px;}
.solution-item,.case-item{width:33.333%;padding:12px;}
.solution-card,.case-card{background:#fff;border-radius:var(--radius);overflow:hidden;transition:all .4s var(--ease);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);display:block;position:relative;}
.solution-card::before,.case-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease);z-index:4;}
.solution-card::after,.case-card::after{content:"";position:absolute;right:10px;bottom:10px;width:16px;height:16px;
  border-right:2px solid var(--brand-2);border-bottom:2px solid var(--brand-2);opacity:0;transition:opacity .35s var(--ease);z-index:4;}
.solution-card:hover,.case-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-8px);border-color:rgba(14,143,199,.4);}
.solution-card:hover::before,.case-card:hover::before{transform:scaleX(1);}
.solution-card:hover::after,.case-card:hover::after{opacity:.9;}
.solution-card .img,.case-card .img{aspect-ratio:var(--card-img-ratio);overflow:hidden;position:relative;background:var(--bg-soft);}
.solution-card .img img,.case-card .img img{width:100%;height:100%;object-fit:contain;padding:14px;transition:transform .6s var(--ease);}
.solution-card:hover .img img,.case-card:hover .img img{transform:scale(1.08);}
.solution-card h3,.case-card h3{font-size:18px;padding:22px 22px 10px;color:var(--steel-900);font-weight:700;}
.solution-card p,.case-card p{font-size:14px;color:var(--ink-3);padding:0 22px 24px;line-height:1.7;}

/* ===== Case detail / category tag ===== */
.case-cat-tag{display:inline-block;margin-top:8px;padding:5px 16px;background:#e7f1f8;color:var(--brand);
  border-radius:4px;font-size:13px;font-weight:600;font-family:var(--mono);}
.product-layout .case-item{width:50%;}
@media (max-width:768px){.product-layout .case-item{width:100%;}}

/* ===== Jobs ===== */
.job-list{border-top:2px solid var(--steel-900);}
.job-item{border-bottom:1px solid var(--line);padding:30px 24px;transition:background .3s var(--ease);border-radius:var(--radius-sm);}
.job-item:hover{background:var(--bg-soft);}
.job-item h3{font-size:18px;color:var(--steel-900);font-weight:800;margin-bottom:12px;}
.job-item .info{color:var(--ink-3);font-size:14px;margin-bottom:12px;display:flex;flex-wrap:wrap;gap:18px;}
.job-item .info span{display:inline-flex;align-items:center;gap:6px;}
.job-item .info span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 6px rgba(25,195,255,.6);}
.job-item .desc{color:var(--ink-2);line-height:1.9;font-size:14px;}

/* ===== Contact ===== */
.contact-section{padding:80px 0 100px;background:var(--bg);}
.contact-wrap{display:flex;gap:60px;align-items:flex-start;}
.contact-info{width:42%;}
.contact-info .ci-title{font-size:36px;font-weight:800;color:var(--steel-900);margin-bottom:8px;}
.contact-info .ci-subtitle{font-size:12px;color:var(--brand);text-transform:uppercase;letter-spacing:3px;margin-bottom:30px;
  font-family:var(--mono);font-weight:600;}
.contact-info .ci-desc{font-size:15px;color:var(--ink-3);line-height:2;margin-bottom:30px;}
.contact-info .ci-list .ci-item{margin-bottom:18px;display:flex;align-items:flex-start;gap:14px;}
.contact-info .ci-list .ci-item .ci-icon{width:46px;height:46px;border-radius:12px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:20px;box-shadow:0 8px 18px rgba(14,143,199,.3),
  inset 0 0 0 1px rgba(255,255,255,.2);}
.contact-info .ci-list .ci-item .ci-label{font-size:13px;color:var(--ink-3);margin-bottom:2px;font-family:var(--mono);letter-spacing:.5px;}
.contact-info .ci-list .ci-item .ci-value{font-size:16px;color:var(--steel-900);font-weight:600;}
.contact-info .contact-map{width:100%;height:340px;border-radius:12px;overflow:hidden;margin-top:26px;background:#e9eef2;
  box-shadow:0 10px 30px rgba(8,14,20,.12), inset 0 0 0 1px rgba(14,143,199,.18);}
.contact-info .contact-map .amap-container{border-radius:12px;}
.map-tip{padding:26px 20px;color:#6b7280;font-size:14px;line-height:1.9;text-align:center;}
.map-tip a{color:var(--brand);text-decoration:underline;}
.map-tip b{color:var(--steel-900);}
.contact-form-wrap{width:58%;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;}
.contact-form-wrap::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--grad);}
.contact-form-wrap .cf-title{font-size:24px;font-weight:800;color:var(--steel-900);margin-bottom:6px;}
.contact-form-wrap .cf-subtitle{font-size:13px;color:var(--ink-3);margin-bottom:28px;}
.form-row{display:flex;gap:20px;}
.form-group{margin-bottom:22px;flex:1;}
.form-group.full{flex:1 1 100%;}
.form-group label{display:block;margin-bottom:8px;color:var(--ink-2);font-size:14px;font-weight:600;}
.form-group label .req{color:var(--voltage);margin-left:2px;}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:14px 18px;border:1px solid var(--line);
  border-radius:var(--radius-sm);font-size:15px;font-family:inherit;color:var(--ink);background:#fff;transition:.3s;}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--ink-3);}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(14,143,199,.14);}
.form-group textarea{height:140px;resize:vertical;}

/* ===== Buttons — 锐角 + 电光 ===== */
.btn{display:inline-block;padding:14px 40px;background:var(--grad);color:#fff;border:none;border-radius:5px;
  cursor:pointer;font-size:15px;font-family:inherit;font-weight:600;transition:all .3s var(--ease);letter-spacing:1px;
  box-shadow:0 10px 24px rgba(14,143,199,.32);position:relative;}
.btn:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(14,143,199,.45);filter:brightness(1.05);}
.btn-outline{background:transparent;color:var(--brand);border:1.5px solid var(--brand);box-shadow:none;}
.btn-outline:hover{background:var(--grad);color:#fff;border-color:transparent;}

/* ===== Footer — 深钢底 + 蓝图网格 + 电光描边 ===== */
.site-footer{background:#ffffff;color:var(--ink-2);margin-top:0;padding:0;
  background-image:linear-gradient(rgba(14,143,199,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(14,143,199,.05) 1px,transparent 1px);
  background-size:28px 28px;border-top:3px solid var(--brand-2);}
.footer-top{display:flex;padding:56px 0 38px;border-bottom:1px solid var(--line);}
.footer-logo{width:35%;padding-right:40px;}
.footer-logo h3{color:var(--steel-900);font-size:22px;margin-bottom:16px;font-weight:800;letter-spacing:.5px;}
.footer-logo p{font-size:13px;line-height:2;color:var(--ink-2);font-family:var(--mono);}
.footer-links{width:65%;display:flex;justify-content:space-around;}
.footer-links h4{color:var(--steel-900);font-size:16px;margin-bottom:22px;font-weight:700;position:relative;padding-left:14px;letter-spacing:.5px;}
.footer-links h4::before{content:"";position:absolute;left:0;top:4px;width:4px;height:16px;border-radius:2px;background:var(--grad);
  box-shadow:0 0 6px rgba(25,195,199,.30);}
.footer-links li{margin-bottom:12px;color:var(--ink-2);font-size:14px;}
.footer-links a{color:var(--ink-2);font-size:14px;}
.footer-links a:hover{color:var(--brand);padding-left:4px;}
.footer-search{padding:30px 0;border-bottom:1px solid var(--line);}
.footer-search form{display:flex;gap:12px;max-width:560px;margin:0 auto;}
.footer-search input{flex:1;padding:14px 20px;border-radius:5px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:15px;font-family:inherit;transition:.3s;}
.footer-search input::placeholder{color:var(--ink-3);}
.footer-search input:focus{outline:none;border-color:var(--brand-2);background:#fff;box-shadow:0 0 0 3px rgba(25,195,255,.18);}
.footer-search .btn{border-radius:5px;background:var(--grad);padding:14px 34px;box-shadow:none;}
.footer-search .btn:hover{filter:brightness(1.08);}
.footer-bottom{text-align:center;padding:24px 0;font-size:13px;color:var(--ink-3);font-family:var(--mono);letter-spacing:.5px;background:var(--bg-soft);border-top:1px solid var(--line);}

/* ===== Search Page ===== */
.search-box{max-width:640px;margin:0 auto 30px;}
.search-box form{display:flex;gap:12px;}
.search-box input{flex:1;padding:16px 22px;border:1px solid var(--line);border-radius:5px;font-size:16px;font-family:inherit;
  transition:.3s;box-shadow:var(--shadow-sm);}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(14,143,199,.14);}
.search-box .btn{border-radius:5px;}
.search-stats{color:var(--ink-3);margin-bottom:20px;font-size:14px;}
.search-results .result-item{padding:22px 0;border-bottom:1px solid var(--line);transition:.3s;border-radius:var(--radius-sm);}
.search-results .result-item:hover{background:var(--bg-soft);padding-left:14px;}
.search-results .result-cat{display:inline-block;background:#e7f1f8;color:var(--brand);font-size:12px;padding:4px 12px;
  border-radius:4px;margin-bottom:8px;font-weight:600;font-family:var(--mono);}
.search-results .result-item h3{font-size:20px;margin-bottom:6px;}
.search-results .result-item h3 a{color:var(--steel-900);}
.search-results .result-item h3 a:hover{color:var(--brand);}
.search-results .result-url{color:var(--brand);font-size:13px;margin-bottom:6px;font-family:var(--mono);}
.search-results .result-text{color:var(--ink-2);font-size:14px;line-height:1.8;}
.search-results mark{background:linear-gradient(transparent 60%,rgba(25,195,255,.3) 0);color:var(--steel-900);padding:0 1px;font-weight:600;}
.no-result{color:var(--ink-3);padding:40px 0;text-align:center;}

/* ===== Responsive ===== */
@media (max-width:1200px){.container{width:100%;padding:0 20px;}}
@media (max-width:992px){
  .product-item{width:33.333%;}
  .feature-list{grid-template-columns:repeat(2,1fr);}
  .solution-item,.case-item{width:50%;}
  .contact-wrap{flex-direction:column;gap:40px;}
  .contact-info,.contact-form-wrap{width:100%;}
  .product-layout{flex-direction:column;}
  .category-nav{width:100%;position:static;}
}
@media (max-width:768px){
  .nav{display:none;position:absolute;top:100%;left:0;width:100%;background:var(--steel-900);flex-direction:column;
    box-shadow:var(--shadow);border-top:1px solid rgba(25,195,255,.2);}
  .nav.open{display:flex;}
  .nav > li > a{padding:16px 20px;color:#cdd9e2;}
  .mega-menu{position:static;box-shadow:none;display:none!important;background:#0f1b25;background-image:none;border-color:rgba(25,195,255,.15);}
  .mega-card:hover{background:rgba(25,195,255,.08);}
  .mega-card-body h4 a{color:#eaf6ff;}
  .menu-toggle{display:flex;}
  .banner{height:380px;}
  .banner-text h2{font-size:30px;}
  .banner-text h3{font-size:16px;}
  .product-item,.solution-item,.case-item{width:50%;}
  .feature-list{grid-template-columns:1fr;}
  .form-row{flex-direction:column;gap:0;}
  .section-title h2{font-size:26px;}
  .page-banner{height:200px;}
  .page-banner h2{font-size:28px;}
  .footer-top{flex-direction:column;gap:30px;}
  .footer-logo,.footer-links{width:100%;}
  .footer-links{flex-wrap:wrap;gap:30px;}
  .cta-inner{flex-direction:column;text-align:center;}
  .detail-head{flex-direction:column;align-items:flex-start;}
  .detail-head img{width:100%;aspect-ratio:var(--card-img-ratio);height:auto;}
}