/* =========================================================
   杰维工业设备官网 — 高端大气主题
   配色：深空蓝(navy) + 香槟金(gold)  |  结构不变，仅前端样式
   ========================================================= */
:root{
  --ink:#0B1F33;          /* 最深navy，页脚底色 */
  --navy:#102A43;         /* 深navy */
  --primary:#163A5F;      /* 主蓝（对应设置 nav_color） */
  --primary-2:#1E4E7C;    /* 渐变亮蓝 */
  --primary-dark:#0F2A47; /* 主蓝加深（hover） */
  --gold:#C9A24B;         /* 香槟金（对应设置 accent_color） */
  --gold-dark:#A8852F;    /* 金加深 */
  --gold-soft:#F7F1E3;    /* 金浅底 */
  --text:#27313D;         /* 正文 */
  --text-soft:#6A7787;    /* 次要文字 */
  --text-invert:#EAF1F8;  /* 深底上的浅字 */
  --line:#E6EBF1;         /* 描边 */
  --bg-soft:#F4F7FA;      /* 浅灰区块底 */
  --white:#fff;
  --radius:12px;
  --radius-sm:8px;
  --shadow-sm:0 2px 12px rgba(15,42,71,.06);
  --shadow-md:0 10px 30px rgba(15,42,71,.10);
  --shadow-lg:0 18px 50px rgba(15,42,71,.16);
}

/* ===== 基础重置 ===== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:var(--text);line-height:1.7;font-size:15px;background:var(--white);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:color .25s}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== 按钮 ===== */
.btn{display:inline-block;padding:11px 30px;border:none;cursor:pointer;font-size:15px;border-radius:6px;transition:all .3s;text-align:center;font-weight:500;letter-spacing:.5px}
.btn-primary{background:linear-gradient(135deg,var(--primary-2),var(--primary));color:#fff;box-shadow:0 6px 18px rgba(22,58,95,.25)}
.btn-primary:hover{background:linear-gradient(135deg,var(--primary),var(--primary-dark));transform:translateY(-2px);box-shadow:0 10px 26px rgba(22,58,95,.32)}
.btn-light{background:#fff;color:var(--primary);box-shadow:0 6px 18px rgba(0,0,0,.12)}
.btn-light:hover{background:var(--gold-soft);color:var(--gold-dark);transform:translateY(-2px)}
.btn-default{background:#eef1f5;color:var(--text)}
.btn-default:hover{background:#e3e8ee}
.btn-large{padding:15px 44px;font-size:17px}
.btn-block{width:100%;display:block}

/* ===== 头部导航 ===== */
.header-top{background:var(--navy);border-bottom:1px solid rgba(255,255,255,.06);padding:7px 0;font-size:13px}
.header-top-inner{display:flex;justify-content:flex-end;gap:22px}
.header-top-inner .header-contact{color:#9fb0c3}
.header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(10px);-webkit-backdrop-filter:saturate(180%) blur(10px);box-shadow:0 1px 0 var(--line),0 6px 20px rgba(15,42,71,.06);border-top:3px solid var(--gold)}
.navbar{border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:92px}
.logo{display:flex;align-items:center;text-decoration:none;padding:4px 0}
.logo-img{height:69px;width:auto;max-width:330px;object-fit:contain;transition:opacity .2s}
.logo:hover .logo-img{opacity:.85}
.logo-text{display:flex;flex-direction:column;justify-content:center;line-height:1.18}
.logo-name{font-size:21px;font-weight:800;color:var(--primary);letter-spacing:1px}
.logo-sub{font-size:11px;font-weight:500;color:var(--text-soft);letter-spacing:1px;margin-top:3px;text-transform:uppercase}
.nav-menu{display:flex;gap:4px}
.nav-menu li a{display:block;padding:10px 16px;border-radius:6px;font-size:15px;color:var(--text);transition:all .25s;position:relative}
.nav-menu li a::after{content:"";position:absolute;left:16px;right:16px;bottom:6px;height:2px;background:var(--gold);transform:scaleX(0);transform-origin:center;transition:transform .25s}
.nav-menu li a:hover{color:var(--primary)}
.nav-menu li a:hover::after{transform:scaleX(1)}
.nav-menu li.active a{color:var(--primary);font-weight:600}
.nav-menu li.active a::after{transform:scaleX(1)}
.nav-toggle{display:none;flex-direction:column;gap:4px;cursor:pointer;background:none;border:none;padding:5px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:1px}

/* ===== 首页Hero ===== */
.home-hero{position:relative;height:520px;overflow:hidden;background:var(--navy)}
.hero-slider{position:relative;height:100%}
.hero-slide{position:absolute;top:0;left:0;width:100%;height:100%;background-size:cover;background-position:center;opacity:0;transition:opacity .8s;display:flex;align-items:center}
.hero-slide.active{opacity:1}
.hero-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(120deg,rgba(15,42,71,.82),rgba(15,42,71,.45) 60%,rgba(22,58,95,.55))}
.hero-content{position:relative;z-index:2;color:#fff;max-width:640px}
.hero-content h1{font-size:42px;margin-bottom:18px;line-height:1.25;font-weight:800;letter-spacing:1px;text-shadow:0 2px 20px rgba(0,0,0,.3)}
.hero-content p{font-size:18px;margin-bottom:28px;opacity:.92;line-height:1.8}
.hero-dots{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);display:flex;gap:9px;z-index:3}
.hero-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.45);cursor:pointer;transition:all .3s}
.hero-dot.active{background:var(--gold);width:26px;border-radius:5px}

/* ===== Section通用 ===== */
.section{padding:72px 0}
.section-gray{background:var(--bg-soft)}
.section-header{text-align:center;margin-bottom:46px}
.section-header h2{font-size:30px;color:var(--navy);margin-bottom:10px;font-weight:800;letter-spacing:1px;position:relative;display:inline-block}
.section-header h2::after{content:"";display:block;width:54px;height:3px;background:linear-gradient(90deg,var(--gold),var(--gold-dark));border-radius:2px;margin:12px auto 0}
.section-header p{color:var(--text-soft);font-size:15px}
.more-link{float:right;color:var(--primary);font-size:14px;font-weight:500}
.more-link:hover{color:var(--gold-dark)}

/* ===== 统计数字 ===== */
.stats-section{background:linear-gradient(135deg,var(--navy),var(--primary-dark));color:#fff;padding:56px 0;position:relative;overflow:hidden}
.stats-section::before{content:"";position:absolute;top:-50%;right:-10%;width:420px;height:420px;background:radial-gradient(circle,rgba(201,162,75,.18),transparent 70%);border-radius:50%}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center;position:relative}
.stat-number{font-size:40px;font-weight:800;margin-bottom:6px;color:var(--gold);letter-spacing:1px}
.stat-label{font-size:14px;opacity:.85;letter-spacing:.5px}

/* ===== 产品卡片 ===== */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.product-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:all .35s;border:1px solid var(--line)}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(201,162,75,.5)}
.product-img{height:220px;background:var(--bg-soft);display:flex;align-items:center;justify-content:center;overflow:hidden}
.product-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.product-card:hover .product-img img{transform:scale(1.06)}
.product-img-placeholder{color:#c4ced8;font-size:14px}
.product-img-placeholder.large{height:400px}
.product-info{padding:20px}
.product-info h3{font-size:17px;color:var(--navy);margin-bottom:8px;font-weight:700}
.product-info p{font-size:13px;color:var(--text-soft);line-height:1.5}
.product-model{color:var(--primary)!important;font-weight:600}

/* ===== 技术优势 ===== */
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.feature-card{background:#fff;padding:34px 22px;border-radius:var(--radius);text-align:center;box-shadow:var(--shadow-sm);border:1px solid var(--line);transition:all .35s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(201,162,75,.5)}
.feature-icon{font-size:42px;margin-bottom:16px}
.feature-card h3{font-size:18px;color:var(--primary);margin-bottom:10px;font-weight:700}
.feature-card p{font-size:13px;color:var(--text-soft);line-height:1.6}

/* ===== 新闻 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{background:#fff;padding:22px;border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:all .35s;border:1px solid var(--line);display:block}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(201,162,75,.5)}
.news-date{font-size:13px;color:var(--primary);margin-bottom:8px;font-weight:600}
.news-card h3{font-size:17px;margin-bottom:8px;line-height:1.45;color:var(--navy);font-weight:700}
.news-card p{font-size:13px;color:var(--text-soft);line-height:1.6}
.news-list{display:flex;flex-direction:column;gap:20px}
.news-item{display:flex;gap:20px;background:#fff;padding:22px;border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:all .35s;border:1px solid var(--line)}
.news-item:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.news-item-date{text-align:center;min-width:64px;padding:12px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border-radius:var(--radius-sm)}
.news-day{font-size:26px;font-weight:800;display:block;line-height:1}
.news-month{font-size:13px;opacity:.9}
.news-item-content{flex:1}
.news-tag{display:inline-block;background:var(--gold-soft);color:var(--gold-dark);padding:3px 10px;border-radius:4px;font-size:12px;margin-bottom:6px;font-weight:600}
.news-item-content h3{font-size:18px;margin-bottom:6px;color:var(--navy);font-weight:700}
.news-item-content p{font-size:14px;color:var(--text-soft)}

/* ===== CTA ===== */
.cta-section{position:relative;padding:56px 0;text-align:center;color:#fff;overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,42,71,.55),rgba(15,42,71,.30));z-index:1}
.cta-inner{position:relative;z-index:2}
.cta-section h2{font-size:30px;margin-bottom:12px;font-weight:800;letter-spacing:1px}
.cta-section p{font-size:16px;margin-bottom:24px;opacity:.92}
.cta-section .btn-light{background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:#fff;box-shadow:0 8px 22px rgba(201,162,75,.35)}
.cta-section .btn-light:hover{background:linear-gradient(135deg,var(--gold-dark),#8A6A1F);transform:translateY(-2px);color:#fff}

/* ===== 页面Banner ===== */
.page-banner{position:relative;padding:58px 0;color:#fff;text-align:center;overflow:hidden}
.page-banner h1{font-size:34px;margin-bottom:10px;font-weight:800;letter-spacing:1px}
.page-banner p{font-size:15px;opacity:.9}

/* ===== 面包屑 ===== */
.breadcrumb{padding:15px 0;color:var(--text-soft);font-size:14px}
.breadcrumb a{color:var(--primary)}
.breadcrumb a:hover{text-decoration:underline}

/* ===== 产品布局 ===== */
.product-layout{display:grid;grid-template-columns:240px 1fr;gap:30px}
.product-sidebar{background:var(--bg-soft);padding:22px;border-radius:var(--radius);height:fit-content;border:1px solid var(--line)}
.product-sidebar h3{font-size:16px;color:var(--navy);margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--gold);font-weight:700}
.category-tree li{margin-bottom:2px}
.category-tree li a{display:block;padding:9px 12px;border-radius:6px;font-size:14px;transition:all .25s;color:var(--text)}
.category-tree li a:hover{background:var(--gold-soft);color:var(--gold-dark)}
.category-tree li.active>a{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff}
.category-sub{margin-left:15px;margin-top:2px}
.category-sub li a{font-size:13px;padding:6px 10px}
.cat-count{font-size:12px;color:#aab4c0}
.product-main{min-height:400px}

/* ===== 产品详情 ===== */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:44px;margin-bottom:44px}
.product-detail-images .main-image{border-radius:var(--radius);overflow:hidden;margin-bottom:12px;background:var(--bg-soft);border:1px solid var(--line)}
.product-detail-images .main-image img{width:100%;height:420px;object-fit:contain}
.image-thumbs{display:flex;gap:10px}
.image-thumbs img{width:84px;height:84px;object-fit:cover;border-radius:6px;cursor:pointer;border:2px solid transparent;transition:all .25s}
.image-thumbs img.active{border-color:var(--gold)}
.product-detail-info h2{font-size:26px;margin-bottom:12px;color:var(--navy);font-weight:800}
.product-model-tag{color:var(--primary);font-weight:600;margin-bottom:16px}
.product-desc{font-size:15px;color:var(--text-soft);line-height:1.9;margin-bottom:28px}
.product-section{margin-bottom:44px}
.product-section-title{font-size:21px;color:var(--navy);padding-bottom:12px;border-bottom:2px solid var(--gold);margin-bottom:22px;font-weight:700}
.features-list{list-style:none}
.features-list li{padding:9px 0 9px 28px;position:relative;font-size:15px;color:var(--text)}
.features-list li::before{content:"✓";position:absolute;left:0;top:10px;width:20px;height:20px;border-radius:50%;background:var(--gold-soft);color:var(--gold-dark);font-weight:700;font-size:12px;display:flex;align-items:center;justify-content:center}
.specs-table{width:100%;border-collapse:collapse;border-radius:var(--radius);overflow:hidden}
.specs-table th,.specs-table td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
.specs-table th{background:var(--primary);color:#fff;font-weight:600}
.specs-table tr:hover td{background:var(--bg-soft)}

/* ===== 解决方案 ===== */
.solutions-layout{display:grid;grid-template-columns:240px 1fr;gap:30px}
.solutions-sidebar{background:var(--bg-soft);padding:22px;border-radius:var(--radius);height:fit-content;border:1px solid var(--line)}
.solutions-sidebar h3{font-size:16px;color:var(--navy);margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--gold);font-weight:700}
.solutions-sidebar li a{display:block;padding:11px 12px;border-radius:6px;font-size:14px;transition:all .25s;color:var(--text)}
.solutions-sidebar li a:hover{background:var(--gold-soft);color:var(--gold-dark)}
.solutions-sidebar li.active a{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff}
.solution-detail{background:#fff;padding:34px;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.solution-detail h2{font-size:26px;color:var(--navy);margin-bottom:10px;font-weight:800}
.solution-subtitle{color:var(--text-soft);font-size:15px;margin-bottom:28px}
.solution-section{margin-bottom:32px}
.solution-section h3{font-size:19px;color:var(--navy);margin-bottom:14px;padding-left:14px;border-left:4px solid var(--gold);font-weight:700}
.process-flow{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.process-step{display:flex;align-items:center;gap:6px}
.process-step-num{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600}
.process-step-name{font-size:14px;padding:6px 14px;background:var(--gold-soft);border-radius:6px;color:var(--text)}
.process-arrow{color:var(--gold-dark);font-size:18px}
.equipment-tags{display:flex;flex-wrap:wrap;gap:10px}
.equipment-tag{padding:7px 16px;background:var(--gold-soft);border:1px solid rgba(201,162,75,.4);border-radius:20px;font-size:13px;color:var(--gold-dark);font-weight:500}
.case-images{margin-bottom:12px}
.case-images img{border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow-sm);transition:transform .3s}
.case-images img:hover{transform:scale(1.02)}

/* ===== 新闻详情 ===== */
.news-detail{max-width:900px;margin:0 auto}
.news-detail-meta{display:flex;gap:20px;color:var(--text-soft);font-size:13px;margin-bottom:20px;flex-wrap:wrap;align-items:center}
.news-cover{margin-bottom:25px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.news-cover img{width:100%;max-height:420px;object-fit:cover}
.news-content{font-size:16px;line-height:2;color:var(--text)}
.news-content p{margin-bottom:16px}
.related-news{margin-top:44px;padding-top:30px;border-top:1px solid var(--line)}
.related-news h3{font-size:19px;margin-bottom:22px;color:var(--navy);font-weight:700}
.news-tabs{display:flex;gap:6px;margin-bottom:30px;border-bottom:2px solid var(--line)}
.news-tabs a{padding:11px 22px;font-size:15px;color:var(--text-soft);border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .25s}
.news-tabs a:hover{color:var(--primary)}
.news-tabs a.active{color:var(--primary);border-color:var(--gold);font-weight:600}

/* ===== 招聘 ===== */
.benefits-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.benefit-card{background:#fff;padding:28px;border-radius:var(--radius);text-align:center;box-shadow:var(--shadow-sm);border:1px solid var(--line);transition:all .35s}
.benefit-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(201,162,75,.5)}
.benefit-card h3{color:var(--primary);font-size:18px;margin-bottom:10px;font-weight:700}
.benefit-card p{color:var(--text-soft);font-size:14px;line-height:1.6}
.jobs-list{display:flex;flex-direction:column;gap:16px}
.job-item{background:#fff;padding:26px;border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid var(--line);transition:all .3s}
.job-item:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.job-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.job-header h3{font-size:19px;color:var(--navy);font-weight:700}
.job-salary{color:var(--gold-dark);font-weight:700;font-size:17px}
.job-meta{display:flex;gap:16px;color:var(--text-soft);font-size:14px;margin-bottom:12px}
.job-meta span::before{content:"·";margin-right:8px;color:#c4ced8}
.job-meta span:first-child::before{content:"";margin:0}
.job-detail p{font-size:14px;color:var(--text-soft);margin-bottom:6px;line-height:1.7}

/* ===== 联系我们 ===== */
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.contact-item{display:flex;gap:16px;margin-bottom:20px}
.contact-icon{font-size:24px;color:var(--gold)}
.contact-item strong{display:block;font-size:15px;color:var(--navy);margin-bottom:3px}
.contact-item p{color:var(--text-soft);font-size:14px}
.traffic-section{margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
.traffic-section h3{font-size:16px;color:var(--primary);margin-bottom:10px;font-weight:700}
.traffic-item{font-size:14px;color:var(--text);margin-bottom:8px}
.contact-form-wrap{background:var(--bg-soft);padding:32px;border-radius:var(--radius);border:1px solid var(--line)}
.contact-form-wrap h2{font-size:21px;color:var(--navy);margin-bottom:6px;font-weight:800}
.form-hint{color:var(--text-soft);font-size:13px;margin-bottom:20px}
.form-group{margin-bottom:15px}
.form-group label{display:block;font-size:14px;color:var(--text);margin-bottom:6px;font-weight:500}
.form-group input,.form-group textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:6px;font-size:14px;font-family:inherit;transition:all .25s;background:#fff}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,58,95,.12)}
.form-result{margin-top:15px;padding:12px;border-radius:6px;text-align:center;font-size:14px}
.form-result.success{background:#e6f4ea;color:#1d6b39}
.form-result.error{background:#fdecea;color:#b23b2e}
.faq-section{margin-top:50px}
.faq-section h2{font-size:26px;color:var(--navy);text-align:center;margin-bottom:28px;font-weight:800}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:10px;overflow:hidden;transition:box-shadow .3s}
.faq-item:hover{box-shadow:var(--shadow-sm)}
.faq-q{padding:16px 22px;cursor:pointer;font-size:15px;font-weight:500;display:flex;align-items:center;gap:10px}
.faq-icon{color:var(--gold);font-size:20px;transition:transform .3s}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s;padding:0 22px;color:var(--text-soft);font-size:14px}
.faq-item.open .faq-a{max-height:240px;padding:0 22px 16px}

/* ===== 关于我们 ===== */
.content-text{font-size:16px;line-height:2;color:var(--text);max-width:900px;margin:0 auto}
.content-text p{margin-bottom:16px;white-space:pre-wrap}
.timeline{max-width:800px;margin:0 auto;position:relative;padding-left:30px}
.timeline::before{content:"";position:absolute;left:8px;top:0;bottom:0;width:2px;background:linear-gradient(var(--primary),var(--gold))}
.timeline-item{position:relative;margin-bottom:30px}
.timeline-item::before{content:"";position:absolute;left:-26px;top:5px;width:12px;height:12px;border-radius:50%;background:var(--gold);border:2px solid #fff;box-shadow:0 0 0 2px var(--gold)}
.timeline-year{font-size:20px;font-weight:800;color:var(--primary);margin-bottom:5px}
.timeline-content{font-size:15px;color:var(--text-soft)}
.culture-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.culture-card{background:#fff;padding:32px;border-radius:var(--radius);text-align:center;box-shadow:var(--shadow-sm);border:1px solid var(--line);transition:all .35s}
.culture-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.culture-card h3{font-size:19px;color:var(--gold-dark);margin-bottom:10px;font-weight:700}
.culture-card p{color:var(--text-soft);font-size:15px;line-height:1.7}

/* ===== 空状态 ===== */
.empty-state{text-align:center;padding:64px 20px;color:#9aa7b3;font-size:16px}

/* ===== 页脚 ===== */
.footer{background:linear-gradient(135deg,var(--ink),#0E2236);color:#9fb0c3;padding:56px 0 0}
.footer-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;padding-bottom:34px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;font-weight:700;position:relative;padding-left:14px}
.footer-col h4::before{content:"";position:absolute;left:0;top:3px;width:4px;height:16px;background:var(--gold);border-radius:2px}
.footer-col p{font-size:14px;line-height:2;margin-bottom:5px;color:#9fb0c3}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{font-size:14px;transition:color .25s;color:#9fb0c3}
.footer-col ul li a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:13px;color:#7e8ea0}
.footer-bottom a{color:#9fb0c3}
.footer-bottom a:hover{color:var(--gold)}

/* ===== 悬浮客服 ===== */
.float-contact{position:fixed;right:22px;bottom:90px;z-index:999}
.float-btn{display:flex;align-items:center;justify-content:center;width:62px;height:62px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;font-size:13px;text-align:center;box-shadow:0 6px 20px rgba(15,42,71,.4);transition:all .3s;border:none;cursor:pointer;font-family:inherit;line-height:1.3;padding:8px 4px}
.float-btn:hover{background:linear-gradient(135deg,var(--gold),var(--gold-dark));transform:scale(1.06);box-shadow:0 8px 24px rgba(201,162,75,.4)}

/* ===== 弹窗 ===== */
.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(11,31,51,.6);z-index:9999;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(2px)}
.modal-box{background:#fff;padding:32px;border-radius:var(--radius);max-width:500px;width:90%;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg)}
.modal-box h3{font-size:21px;color:var(--navy);margin-bottom:16px;font-weight:800}
.form-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:15px}

/* ===== Flash消息 ===== */
.flash-container{position:fixed;top:82px;right:20px;z-index:9999;max-width:350px}
.flash{padding:12px 20px;border-radius:6px;margin-bottom:10px;color:#fff;font-size:14px;animation:slideIn .3s;box-shadow:var(--shadow-md)}
.flash-success{background:#1d6b39}
.flash-error{background:#b23b2e}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* ===== 错误页 ===== */
.error-page{text-align:center;padding:100px 20px}
.error-page h1{font-size:80px;color:var(--primary);margin-bottom:10px;font-weight:800}
.error-page p{font-size:18px;color:var(--text-soft);margin-bottom:25px}

/* ===== 响应式 ===== */
@media(max-width:768px){
  .header-top{display:none}
  .nav-toggle{display:flex}
  .nav-menu{display:none;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;padding:10px;box-shadow:0 6px 16px rgba(15,42,71,.12);border-top:1px solid var(--line)}
  .nav-menu.show{display:flex}
  .nav-menu li a::after{display:none}
  .stats-grid,.product-grid,.features-grid,.news-grid,.benefits-grid,.culture-grid{grid-template-columns:1fr}
  .product-layout,.solutions-layout{grid-template-columns:1fr}
  .product-detail,.contact-layout{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:20px}
  .hero-content h1{font-size:26px}
  .hero-content p{font-size:15px}
  .home-hero{height:340px}
  .process-flow{flex-direction:column}
  .process-arrow{transform:rotate(90deg)}
}

/* ===== 语言切换 ===== */
.lang-switch{margin-left:15px;padding:3px 12px;border:1px solid #c4ced8;border-radius:14px;font-size:12px;color:var(--text-soft);transition:all .25s}
.lang-switch:hover{color:var(--primary);border-color:var(--primary)}

/* ===== 双地点联系卡片 ===== */
.locations-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.location-card{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-sm);border-top:4px solid var(--gold);position:relative;transition:all .35s;border:1px solid var(--line)}
.location-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.location-tag{display:inline-block;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;padding:5px 16px;border-radius:18px;font-size:13px;margin-bottom:16px;font-weight:500}
.location-card h3{font-size:20px;color:var(--navy);margin-bottom:20px;line-height:1.4;font-weight:700}
.location-info{display:flex;flex-direction:column;gap:12px}
.location-item{display:flex;gap:12px;align-items:flex-start}
.loc-icon{font-size:18px;line-height:1.5;color:var(--gold)}
.location-item strong{display:block;font-size:13px;color:#9aa7b3;font-weight:500;margin-bottom:2px}
.location-item p{font-size:15px;color:var(--navy);line-height:1.5}
@media(max-width:768px){.locations-grid{grid-template-columns:1fr}}

/* ===== 微信二维码弹窗 ===== */
.wechat-qr-box{background:#fff;border-radius:var(--radius);padding:32px 36px;text-align:center;position:relative;max-width:320px;width:90%;box-shadow:var(--shadow-lg)}
.wechat-qr-box h3{font-size:19px;color:var(--navy);margin-bottom:16px;font-weight:800}
.wechat-qr-box img{width:220px;height:220px;object-fit:contain;border:1px solid var(--line);border-radius:8px}
.wechat-qr-box p{margin-top:12px;font-size:14px;color:var(--text-soft)}
.wechat-qr-close{position:absolute;top:8px;right:12px;background:none;border:none;font-size:24px;color:#9aa7b3;cursor:pointer;line-height:1}
.wechat-qr-close:hover{color:var(--text)}

/* ===== 留言表单两列布局 ===== */
.contact-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:25px}
.traffic-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 30px}
@media(max-width:768px){.contact-form-grid,.traffic-grid{grid-template-columns:1fr}}

/* ===== 矩阵参数表 ===== */
.specs-table-wrapper{overflow-x:auto}
.specs-matrix{min-width:900px}
.specs-matrix th{background:var(--primary);color:#fff;padding:11px 13px;font-size:13px;white-space:nowrap;font-weight:600}
.specs-matrix td{padding:10px 13px;font-size:13px;border-bottom:1px solid var(--line);white-space:nowrap;text-align:center}
.specs-matrix tr:nth-child(even) td{background:#f6f9fc}
.specs-matrix tr:hover td{background:var(--gold-soft)}
.specs-matrix .spec-model{font-weight:600;color:var(--primary)}

/* ===== 合作伙伴logo墙：无缝滚动流水灯 ===== */
.partners-section{padding-top:50px;padding-bottom:50px}
/* 视口容器：与页面 .container 同宽对齐 + 左右渐隐遮罩 */
.partners-marquee{overflow:hidden;position:relative;padding:6px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 6%,#000 94%,transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 6%,#000 94%,transparent 100%)}
/* 滚动轨道：卡片平铺两份，动画平移-50%实现无缝循环 */
.partners-marquee-track{display:flex;gap:16px;width:max-content;animation:partnersMarquee 36s linear infinite;will-change:transform}
@keyframes partnersMarquee{from{transform:translateX(0)}to{transform:translateX(calc(-50% - 8px))}}
/* 卡片固定宽度，脱离grid */
.partners-marquee-track .partner-card{flex:0 0 auto;width:190px;background:#fff;border:1px solid var(--line);border-radius:8px;height:92px;display:flex;align-items:center;justify-content:center;padding:12px;transition:all .35s}
.partner-card:hover{border-color:var(--gold);box-shadow:0 6px 18px rgba(201,162,75,.18);transform:translateY(-3px)}
.partner-card img{max-width:100%;max-height:60px;object-fit:contain;transition:all .35s}
.partner-card:hover img{transform:scale(1.06)}
.partner-name{font-size:16px;font-weight:600;color:var(--navy);transition:color .3s}
.partner-card:hover .partner-name{color:var(--gold-dark)}
/* 悬停暂停：方便看清某个logo */
.partners-marquee:hover .partners-marquee-track{animation-play-state:paused}
/* 用户偏好减少动态效果时退回静态不滚动 */
@media (prefers-reduced-motion: reduce){
  .partners-marquee-track{animation:none;flex-wrap:wrap;justify-content:center}
}
/* 移动端卡片小一点 */
@media(max-width:640px){
  .partners-marquee-track .partner-card{width:150px;height:78px}
  .partners-marquee-track{gap:12px;animation-duration:28s}
}

/* ===== 后台合作伙伴管理 ===== */
.partner-grid-admin{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.partner-item{border:1px solid var(--line);border-radius:var(--radius);padding:15px;text-align:center;background:#fff}
.partner-item .partner-logo-box{height:80px;display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.partner-item img{max-width:100%;max-height:70px;object-fit:contain}
.partner-item .partner-name-admin{font-weight:600;margin-bottom:8px;color:var(--navy)}
@media(max-width:900px){.partner-grid-admin{grid-template-columns:repeat(2,1fr)}}

/* ===== 关于我们图片功能 ===== */
.intro-layout.has-image{display:grid;grid-template-columns:3fr 2fr;gap:44px;align-items:start}
.intro-image img{width:100%;border-radius:var(--radius);box-shadow:var(--shadow-md)}
.factory-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:25px}
.factory-item{border-radius:var(--radius);overflow:hidden;height:220px;background:var(--bg-soft)}
.factory-item img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.factory-item:hover img{transform:scale(1.06)}
/* ===== 资质荣誉 · 一行无缝循环跑马灯 ===== */
.cert-marquee{position:relative;overflow:hidden;margin-top:28px;padding:6px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 70px,#000 calc(100% - 70px),transparent 100%);
          mask-image:linear-gradient(90deg,transparent 0,#000 70px,#000 calc(100% - 70px),transparent 100%)}
.cert-track{display:flex;width:max-content;animation-name:cert-scroll;animation-timing-function:linear;animation-iteration-count:infinite}
.cert-marquee:hover .cert-track{animation-play-state:paused}
/* 卡片间距用 margin 而非 gap，保证两组内容宽度完全相等，translateX(-50%) 才能严丝合缝 */
.cert-card{flex:0 0 auto;width:230px;height:170px;margin-right:18px;background:#fff;
  border:1px solid var(--line);border-radius:8px;padding:12px;
  display:flex;align-items:center;justify-content:center;
  transition:border-color .35s,box-shadow .35s,transform .35s}
.cert-card img{display:block;max-width:100%;max-height:100%;object-fit:contain}
.cert-card:hover{border-color:rgba(44,123,229,.45);box-shadow:0 10px 26px rgba(22,58,95,.14);transform:translateY(-4px)}
@keyframes cert-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media(max-width:1024px){.cert-card{width:200px;height:150px}.factory-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.intro-layout.has-image{grid-template-columns:1fr}
  .cert-card{width:168px;height:126px;margin-right:14px}
  .cert-marquee{-webkit-mask-image:none;mask-image:none}}
@media(prefers-reduced-motion:reduce){.cert-track{animation:none}.cert-marquee{overflow-x:auto}}
@media(max-width:640px){.factory-grid{grid-template-columns:1fr}}

/* ===== 产品工艺流程板块 ===== */
.process-text{margin-bottom:16px;line-height:1.9;color:#4a5568}
.process-image{margin-top:12px;text-align:center}
.process-image img{max-width:100%;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow-sm)}

/* ========== 发展历程时间线（横向阶梯上升·一屏） ========== */
.section-timeline { overflow: hidden; }
.timeline-stairs { padding: 0 0 4px; overflow-x: auto; }
.timeline-track {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  position: relative;
  padding: 150px 12px 16px;
  min-width: min-content;
}
/* 跟随阶梯走势的上升折线（SVG 动态绘制） */
.timeline-line {
  position: absolute;
  top: 0; left: 0;
  z-index: 1;
  pointer-events: none;
  overflow: visible;
}
.timeline-node {
  flex: 1 1 0;
  min-width: 128px;
  max-width: 168px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 2;
}
.node-year {
  font-weight: 800;
  font-size: 15px;
  color: #1A5FB4;
  margin-bottom: 8px;
  letter-spacing: .5px;
}
.node-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #5b9bf0, #1A5FB4);
  border: 3px solid #fff;
  box-shadow: 0 0 0 3px rgba(42,123,229,.30), 0 4px 10px rgba(26,95,180,.35);
  margin-bottom: 12px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.node-dot:hover {
  transform: scale(1.18);
  box-shadow: 0 0 0 4px rgba(42,123,229,.40), 0 6px 14px rgba(26,95,180,.45);
}
.node-card {
  width: 100%;
  background: #f4f8fd;
  border: 1px solid #e1ebf6;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.6;
  color: #556;
  text-align: center;
  min-height: 58px;
}
@media (max-width: 768px) {
  .timeline-track { gap: 14px; padding-top: 140px; }
  .timeline-node { min-width: 120px; }
  .node-card { font-size: 11px; min-height: 52px; }
  .node-year { font-size: 13px; }
}

/* =========================================================
   前台美化补丁 v2 — 蓝金精致化 + 微动效（2026-08-28）
   策略：置于文件末尾，按 CSS 「后写覆盖」原则生效
        金(#C9A24B) 降权为极少量点缀；交互态/卡片层级统一为蓝系
        不含任何后端逻辑改动，纯样式增强
   ========================================================= */

/* ===== 0. 设计令牌增强 ===== */
:root{
  --accent:#2C7BE5;            /* 交互强调色（亮蓝） */
  --accent-soft:#EAF2FD;       /* 强调色浅底 */
  --shadow-hover:0 16px 40px rgba(15,42,71,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ===== 1. 全局排版与可读性 ===== */
body{
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  letter-spacing:.2px;
  line-height:1.8;
}
::selection{background:var(--primary);color:#fff}
a,.btn{transition-timing-function:var(--ease)}

/* 锚点滚动不被 sticky 导航遮挡 */
section[id],.section,.page-banner,.product-section,.solution-section{scroll-margin-top:132px}

/* ===== 2. 内页 Banner 修复（原规则缺背景，导致白底白字不可见） ===== */
.page-banner{
  background:linear-gradient(120deg,var(--ink) 0%,var(--primary) 50%,var(--primary-2) 100%);
  padding:70px 0 66px;
}
.page-banner::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:radial-gradient(900px 220px at 50% 130%,rgba(201,162,75,.16),transparent 70%);
}
.page-banner::after{
  content:"";position:absolute;left:50%;bottom:22px;transform:translateX(-50%);z-index:1;
  width:56px;height:2px;background:linear-gradient(90deg,var(--gold),var(--gold-dark));border-radius:2px;
}
.page-banner > *{position:relative;z-index:2}
.page-banner h1{font-size:36px;letter-spacing:1.5px;text-shadow:0 2px 14px rgba(0,0,0,.25)}
.page-banner p{font-size:15.5px;opacity:.9}

/* ===== 3. 首屏 Hero 升级 ===== */
.home-hero{height:600px}
.hero-overlay{background:linear-gradient(115deg,rgba(11,31,51,.80) 0%,rgba(11,31,51,.42) 48%,rgba(22,58,95,.55) 100%)}
.hero-content h1{font-size:50px;letter-spacing:2px;line-height:1.22;text-shadow:0 4px 26px rgba(0,0,0,.38)}
.hero-content p{font-size:18px;max-width:560px;line-height:1.85;opacity:.95}
.hero-dots{bottom:26px;gap:10px}
.hero-dot{width:9px;height:9px;background:rgba(255,255,255,.5)}
.hero-dot.active{width:28px;background:var(--gold);box-shadow:0 0 0 1px rgba(201,162,75,.5)}
@media(max-width:768px){
  .home-hero{height:400px}
  .hero-content h1{font-size:27px;letter-spacing:.5px}
  .hero-content p{font-size:15px}
}

/* ===== 4. 区块节奏与标题（金作为唯一保留点缀） ===== */
.section{padding:76px 0}
.section-header{margin-bottom:48px}
.section-header h2{font-size:32px;letter-spacing:1.5px}
.section-header h2::after{width:56px;height:2px;margin-top:14px}
.section-header p{font-size:15.5px;letter-spacing:.3px}

/* ===== 5. 卡片质感（精致商务） ===== */
.product-card,.feature-card,.news-card,.benefit-card,.culture-card,.job-item,.location-card,.partner-card{
  border:1px solid var(--line);
  box-shadow:0 1px 2px rgba(15,42,71,.03),0 6px 20px rgba(15,42,71,.05);
  transition:all .4s var(--ease);
  position:relative;
}
.product-card,.feature-card,.news-card,.benefit-card,.culture-card{overflow:hidden}
/* hover 顶部蓝色细条 */
.product-card::before,.feature-card::before,.news-card::before,.benefit-card::before,.culture-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;z-index:2;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transform-origin:left;
  transition:transform .45s var(--ease);
}
.product-card:hover::before,.feature-card:hover::before,.news-card:hover::before,
.benefit-card:hover::before,.culture-card:hover::before{transform:scaleX(1)}
.product-card:hover,.feature-card:hover,.news-card:hover,
.benefit-card:hover,.culture-card:hover,.job-item:hover,.location-card:hover{
  transform:translateY(-8px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(44,123,229,.35);
}

/* 产品图：白底设备图不裁切，更专业 */
.product-img{height:230px;background:linear-gradient(180deg,#fff 0%,#f6f9fc 100%);padding:14px}
.product-img img{object-fit:contain;height:100%;transition:transform .6s var(--ease)}
.product-info{padding:22px 20px}
.product-info h3{font-size:17.5px;letter-spacing:.3px}
.product-info p{font-size:13.5px;line-height:1.6}

/* 优势卡图标：圆形渐变底块 */
.feature-card{padding:36px 24px}
.feature-icon{
  width:66px;height:66px;border-radius:18px;margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;font-size:28px;
  background:linear-gradient(135deg,rgba(44,123,229,.14),rgba(22,58,95,.05));
  color:var(--accent);
  box-shadow:inset 0 0 0 1px rgba(44,123,229,.12);
}
.feature-card h3{font-size:18.5px;margin-bottom:10px;letter-spacing:.3px}
.feature-card p{font-size:13.5px;line-height:1.7}

/* 新闻卡：日期做标签化 */
.news-card{padding:24px 22px}
.news-date{
  display:inline-block;margin-bottom:10px;padding:3px 10px;border-radius:4px;
  background:var(--accent-soft);color:var(--accent);font-size:12.5px;letter-spacing:.3px;
}
.news-card h3{font-size:17.5px;line-height:1.5;letter-spacing:.3px}
.news-card p{font-size:13.5px;line-height:1.7}

/* ===== 6. 金色降权：交互态统一为蓝系（金仅作极少量点缀） ===== */
.partner-card:hover{border-color:rgba(44,123,229,.45);box-shadow:0 8px 22px rgba(22,58,95,.12)}
.product-sidebar h3,.solutions-sidebar h3{border-bottom-color:var(--accent)}
.product-section-title{border-bottom-color:var(--accent)}
.solution-section h3{border-left-color:var(--accent)}
.location-card{border-top-color:var(--accent)}
.contact-icon,.loc-icon,.faq-icon{color:var(--accent)}
.image-thumbs img.active{border-color:var(--accent)}
.news-tag,.equipment-tag,.process-step-name{background:var(--accent-soft);color:var(--primary);border-color:rgba(44,123,229,.35)}
.specs-matrix tr:hover td{background:var(--accent-soft)}
.category-tree li a:hover,.solutions-sidebar li a:hover{background:var(--accent-soft);color:var(--primary)}
.news-tabs a.active{border-color:var(--accent)}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--primary));box-shadow:0 6px 18px rgba(22,58,95,.26)}
.btn-primary:hover{background:linear-gradient(135deg,var(--primary),var(--primary-dark));box-shadow:0 10px 28px rgba(22,58,95,.34)}
/* CTA：白底蓝字按钮压住蓝金渐变背景，更精致 */
.cta-section .btn-light{background:#fff;color:var(--primary);box-shadow:0 8px 24px rgba(0,0,0,.14)}
.cta-section .btn-light:hover{background:var(--gold-soft);color:var(--gold-dark);transform:translateY(-2px)}

/* ===== 7. 返回顶部按钮 ===== */
.back-to-top{
  position:fixed;right:22px;bottom:166px;z-index:998;
  width:46px;height:46px;border-radius:50%;border:none;cursor:pointer;
  background:linear-gradient(135deg,var(--accent),var(--primary));color:#fff;font-size:19px;line-height:1;
  box-shadow:0 6px 20px rgba(15,42,71,.30);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .35s var(--ease),transform .35s var(--ease),visibility .35s,background .3s;
}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:linear-gradient(135deg,var(--primary),var(--primary-dark));transform:translateY(-3px)}

/* ===== 8. 滚动进场微动效 ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .75s var(--ease),transform .75s var(--ease);will-change:opacity,transform}
.reveal.reveal-in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ===== 9. 移动端微调 ===== */
@media(max-width:768px){
  .back-to-top{bottom:96px;right:16px;width:42px;height:42px}
  .product-img{height:200px}
  .section{padding:52px 0}
  .section-header h2{font-size:25px}
  .page-banner{padding:46px 0 42px}
  .page-banner h1{font-size:26px}
}

/* ===== Logo 放大 1.5 倍（2026-09-03）：桌面 46→69px；移动端维持原尺寸防挤压 ===== */
@media(max-width:768px){
  .nav-inner{height:64px}
  .logo-img{height:44px;max-width:200px}
}

/* ===== 图片保护（2026-09-03）：禁拖拽、禁长按弹出保存、禁选中拖影 ===== */
img{
  -webkit-user-drag:none;
  -khtml-user-drag:none;
  -moz-user-drag:none;
  -o-user-drag:none;
  -webkit-user-select:none;
  -moz-user-select:none;
  -ms-user-select:none;
  user-select:none;
  -webkit-touch-callout:none;
}
img::selection{background:transparent}
/* 首屏轮播等使用背景图的元素同样不可选中 */
.hero-slide,.banner,.page-banner{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;-webkit-touch-callout:none}

/* ===== 首屏视频背景 (2026-09-04) =====
   性能原则：首屏"零视频字节"。
   - 视频在 window.load 之后的空闲时段才由 JS 插入 DOM，不参与首屏渲染与 load 事件
   - 未就绪/加载失败时显示原有静态轮播图，观感与改造前一致
   - 移动端、省流量模式、2G 网络、prefers-reduced-motion 一律不加载
   - 服务器带宽约 3.5Mbps，视频须压到 1.5MB 以内（约 3.5 秒缓冲完）
*/
.hero-video-layer{position:absolute;inset:0;z-index:1;overflow:hidden;opacity:0;pointer-events:none;background:var(--navy)}
.hero-video-layer.is-ready{opacity:1}
.hero-video-layer video{width:100%;height:100%;object-fit:cover;display:block}
/* 视频遮罩：调淡至约40%，保证白色标题可读的同时让背景视频明显可见 */
.hero-video-layer::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(15,42,71,.45) 0%,rgba(15,42,71,.20) 55%,rgba(22,58,95,.30) 100%)}
/* 视频就绪后隐藏轮播指示点（此时轮播已停止，主视觉是视频） */
.hero-video-layer.is-ready ~ .hero-dots{opacity:0;transition:opacity .6s}