/* ===== 东莞市铭震科技有限公司 - 全站样式 ===== */
:root{
  --primary:#0e7490;        /* 主色：青（健康医疗感） */
  --primary-dark:#155e75;
  --primary-light:#e0f2fe;
  --teal:#14b8a6;
  --accent:#f97316;         /* 强调：橙（CTA） */
  --accent-dark:#ea580c;
  --ink:#1f2937;
  --gray:#6b7280;
  --gray-light:#9ca3af;
  --bg:#f6f9fb;
  --card:#ffffff;
  --border:#e5e7eb;
  --radius:14px;
  --shadow:0 2px 12px rgba(15,23,42,.06);
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:15px}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
section{padding:56px 0}
.sec-tag{display:inline-block;color:var(--primary);font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:6px}
.sec-title{font-size:26px;font-weight:700;color:var(--ink);margin-bottom:8px}
.sec-sub{color:var(--gray);font-size:14px;margin-bottom:32px}
.center{text-align:center}
.btn{display:inline-block;padding:12px 28px;border-radius:50px;font-weight:600;font-size:15px;transition:.2s;cursor:pointer;border:none}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(249,115,22,.3)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}

/* ===== 顶部导航 ===== */
.topbar{background:var(--primary-dark);color:#cffafe;font-size:13px;padding:8px 0}
.topbar .container{display:flex;justify-content:space-between;align-items:center}
.topbar a{color:#cffafe}
.topbar a:hover{color:#fff}
.topbar .tel{color:#fff;font-weight:600}
.topbar .topbar-right{display:flex;align-items:center;gap:16px}
.topbar .lang{color:#fff;font-weight:600}
.topbar .lang:hover{color:#fff;text-decoration:underline}
header.site{background:#fff;box-shadow:0 1px 0 var(--border);position:sticky;top:0;z-index:50}
.nav{display:flex;justify-content:space-between;align-items:center;height:64px}
.logo{display:flex;align-items:center;gap:12px;font-weight:700}
.logo .logo-img{width:46px;height:46px;object-fit:contain;flex-shrink:0}
.logo .logo-text{display:flex;flex-direction:column;justify-content:center;line-height:1.05;height:46px;letter-spacing:4px;font-size:34px;
  background:linear-gradient(90deg,#5cb85c,#2ea3dc);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.logo .logo-text small{font-size:12px;font-weight:700;letter-spacing:1.6px;color:#64748b;-webkit-text-fill-color:#64748b}
.nav-menu{display:flex;gap:28px}
.nav-menu a{color:var(--ink);font-size:15px;font-weight:500;padding:6px 0;position:relative}
.nav-menu a:hover,.nav-menu a.active{color:var(--primary)}
.nav-menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--primary);border-radius:2px}
.nav-toggle{display:none;background:none;border:none;font-size:24px;color:var(--ink);cursor:pointer}

/* ===== Hero 首屏 ===== */
.hero{background:linear-gradient(100deg,rgba(10,60,80,.96) 0%,rgba(14,116,144,.88) 42%,rgba(20,184,166,.45) 75%,rgba(20,184,166,.30) 100%),url('../images/hero-bg.webp') center right/cover no-repeat,var(--primary);color:#fff;padding:72px 0 84px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.06)}
.hero::before{content:"";position:absolute;left:0;bottom:0;right:0;height:120px;background:linear-gradient(to bottom,transparent,rgba(10,50,70,.55));pointer-events:none}
.hero .container{position:relative;z-index:1}
.hero h1{font-size:34px;font-weight:800;letter-spacing:1px;margin-bottom:14px;line-height:1.3}
.hero .hero-sub{font-size:16px;color:#e0f2fe;max-width:640px;margin-bottom:12px}
.hero .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.hero .hero-tags span{background:rgba(255,255,255,.15);padding:6px 14px;border-radius:50px;font-size:13px}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap}
.hero .cta-row .btn-primary{background:#fff;color:var(--primary);box-shadow:none}
.hero .cta-row .btn-primary:hover{background:#e0f2fe}
.hero .metrics{display:flex;gap:0;margin-top:40px;flex-wrap:wrap}
.hero .metric{flex:1;min-width:120px;padding:0 20px;border-left:1px solid rgba(255,255,255,.25)}
.hero .metric:first-child{border-left:none;padding-left:0}
.hero .metric b{display:block;font-size:24px;color:#fff}
.hero .metric em{font-style:normal;font-size:13px;color:#cffafe}

/* ===== 通用卡片 ===== */
.cards{display:grid;gap:20px}
.grid-2{grid-template-columns:1fr 1fr}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;border:1px solid var(--border)}
.card:hover{box-shadow:0 6px 20px rgba(15,23,42,.1);transform:translateY(-2px);transition:.2s}
.card .ico{width:48px;height:48px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;margin-bottom:14px}
.card h3{font-size:17px;margin-bottom:6px;color:var(--ink)}
.card p{font-size:13px;color:var(--gray)}

/* ===== 产品分类 ===== */
.cat-card{overflow:hidden;position:relative;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);display:block}
.cat-card .cat-visual{height:150px;background:linear-gradient(135deg,var(--primary-light),#ccfbf1) center/cover no-repeat;display:flex;align-items:flex-end;position:relative}
.cat-card .cat-visual::before{content:"";position:absolute;inset:0;background:linear-gradient(to bottom,rgba(15,60,80,0) 40%,rgba(10,50,70,.62) 100%)}
.cat-card .cat-visual span{position:relative;z-index:1;width:100%;padding:12px 16px;color:#fff;font-size:20px;font-weight:700;letter-spacing:2px;text-shadow:0 1px 4px rgba(0,0,0,.35)}
.cat-card:hover .cat-visual{transform:scale(1.04);transition:transform .35s}
.cat-card .cat-body{padding:18px}
.cat-card h3{font-size:17px;margin-bottom:4px}
.cat-card p{font-size:13px;color:var(--gray)}
.cat-card .cat-link{color:var(--primary);font-size:13px;font-weight:600}

/* ===== 产品项 ===== */
.prod-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);overflow:hidden}
.prod-card .prod-visual{aspect-ratio:1/1;background:linear-gradient(135deg,#f0f9ff,#e6fffa);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:600;color:var(--primary);overflow:hidden}
.prod-card .prod-visual img{width:100%;height:100%;object-fit:cover}
.prod-card .prod-body{padding:16px}
.prod-card h4{font-size:15px;font-weight:600;margin-bottom:6px;line-height:1.4;word-break:break-word;overflow-wrap:break-word}
.prod-card .prod-meta{font-size:12px;color:var(--gray-light);margin-bottom:8px}
.prod-card .prod-price{color:var(--accent);font-weight:700;font-size:15px}
.prod-card .prod-price small{font-size:12px;font-weight:400;color:var(--gray-light)}

/* ===== 优势/资质 ===== */
.feature-list{display:grid;gap:16px}
.feature-item{display:flex;gap:14px;align-items:flex-start;background:var(--card);padding:18px;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border)}
.feature-item .fi-ico{width:40px;height:40px;flex:0 0 auto;border-radius:10px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700}
.feature-item h4{font-size:15px;margin-bottom:3px}
.feature-item p{font-size:13px;color:var(--gray)}

/* ===== 工厂数据带 ===== */
.band{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border-radius:var(--radius);padding:32px;text-align:center}
.band .band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
.band .band-item b{display:block;font-size:26px;color:#fff}
.band .band-item em{font-style:normal;font-size:13px;color:#cffafe}

/* ===== 资质徽章 ===== */
.badges{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.badge{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--border);border-radius:50px;padding:10px 18px;font-size:14px;font-weight:500;box-shadow:var(--shadow)}
.badge .dot{width:10px;height:10px;border-radius:50%;background:var(--teal)}

/* ===== 证书图片墙 ===== */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:28px}
.cert-item{background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:var(--shadow);transition:.2s}
.cert-item:hover{box-shadow:0 6px 20px rgba(15,23,42,.12);transform:translateY(-2px)}
.cert-item img{width:100%;height:auto;display:block;background:#fafafa}
.cert-item span{display:block;text-align:center;padding:10px;font-size:13px;color:var(--gray);border-top:1px solid var(--border)}
@media(max-width:900px){.cert-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.cert-grid{grid-template-columns:1fr 1fr;gap:10px}}

/* ===== 工厂实拍图片墙 ===== */
.factory-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.factory-item{overflow:hidden;border-radius:12px;box-shadow:var(--shadow);border:1px solid var(--border);aspect-ratio:4/3;background:#f6f9fb}
.factory-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s}
.factory-item:hover img{transform:scale(1.06)}
.factory-item:first-child{grid-column:span 2;grid-row:span 2;aspect-ratio:auto}
@media(max-width:900px){.factory-grid{grid-template-columns:repeat(2,1fr)}.factory-item:first-child{grid-column:span 2;grid-row:span 1}}
@media(max-width:480px){.factory-grid{grid-template-columns:1fr 1fr;gap:10px}.factory-item{aspect-ratio:4/3}}

/* ===== 表单 ===== */
.form-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;border:1px solid var(--border)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--gray);margin-bottom:6px}
.field input,.field textarea{width:100%;border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-size:15px;outline:none;font-family:inherit}
.field input:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.field textarea{resize:vertical;min-height:100px}

/* ===== 联系信息 ===== */
.contact-item{display:flex;gap:14px;align-items:flex-start;margin-bottom:18px}
.contact-item .ci-ico{width:42px;height:42px;flex:0 0 auto;border-radius:10px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700}
.contact-item h4{font-size:15px;margin-bottom:2px}
.contact-item p{font-size:14px;color:var(--gray)}

/* ===== 页头 ===== */
.page-hero{background:linear-gradient(150deg,var(--primary-dark),var(--primary));color:#fff;padding:48px 0;text-align:center}
.page-hero h1{font-size:30px;font-weight:700;margin-bottom:6px}
.page-hero p{color:#cffafe;font-size:14px}

/* ===== 面包屑 ===== */
.breadcrumb{background:#fff;border-bottom:1px solid var(--border);padding:12px 0;font-size:13px;color:var(--gray)}
.breadcrumb a{color:var(--primary)}

/* ===== 底部 ===== */
footer.site{background:#0f172a;color:#94a3b8;padding:48px 0 24px;margin-top:40px}
footer.site .container{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px}
footer.site h4{color:#fff;font-size:15px;margin-bottom:14px}
footer.site a{color:#94a3b8;font-size:13px;display:block;margin-bottom:8px}
footer.site a:hover{color:#fff}
footer.site .f-brand{font-size:18px;font-weight:700;color:#fff;margin-bottom:10px}
footer.site .f-desc{font-size:13px;line-height:1.8}
.copyright{border-top:1px solid #1e293b;margin-top:32px;padding-top:20px;text-align:center;font-size:12px;color:#64748b}
.copyright a{color:#64748b}

/* ===== 响应式 ===== */
@media(max-width:900px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr 1fr}
  footer.site .container{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav-menu{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 20px;box-shadow:0 10px 20px rgba(0,0,0,.08)}
  .nav-menu.open{display:flex}
  .nav-toggle{display:block}
  .hero h1{font-size:26px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .band .band-grid{grid-template-columns:1fr 1fr}
  section{padding:40px 0}
}
/* ===== 移动端细调 ===== */
@media(max-width:640px){
  .topbar .container{justify-content:center}
  .topbar .container > span{display:none}
  .topbar .tel{font-size:13px}
  .logo{gap:8px}
  .logo .logo-img{width:40px;height:40px}
  .logo .logo-text{font-size:26px;letter-spacing:2px;height:40px}
  .logo .logo-text small{font-size:10px;letter-spacing:1.4px}
  .hero{background:linear-gradient(100deg,rgba(10,60,80,.96) 0%,rgba(14,116,144,.9) 55%,rgba(20,184,166,.55) 100%),url('../images/hero-bg.webp') center/cover no-repeat,var(--primary);padding:52px 0 60px}
  .hero h1{font-size:24px;line-height:1.35}
  .hero .hero-sub{font-size:14px}
  .hero .hero-tags{gap:8px;margin-bottom:20px}
  .hero .hero-tags span{font-size:12px;padding:5px 11px}
  .hero .metrics{margin-top:28px;gap:12px 0}
  .hero .metric{min-width:25%;padding:0 12px}
  .hero .metric b{font-size:20px}
  .hero .cta-row .btn{width:100%;text-align:center;padding:13px 0}
  .wechat-float{right:16px;bottom:24px;width:50px;height:50px}
  .wechat-float svg{width:27px;height:27px}
  .page-hero{padding:36px 0}
  .page-hero h1{font-size:24px}
  .band{padding:24px 18px}
  .badge{padding:8px 14px;font-size:13px}
  .wechat-box{max-width:300px;padding:24px 18px}
  footer.site{padding:36px 0 20px}
}

/* ===== 微信聊天入口 ===== */
.wechat-float{position:fixed;right:20px;bottom:90px;z-index:999;width:54px;height:54px;border-radius:50%;
  background:linear-gradient(135deg,#07c160,#05a74f);box-shadow:0 4px 16px rgba(7,193,96,.45);cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:transform .2s}
.wechat-float:hover{transform:scale(1.08)}
.wechat-float svg{width:30px;height:30px;fill:#fff}
.wechat-float .pulse{position:absolute;inset:0;border-radius:50%;border:2px solid #07c160;animation:wcpulse 2s infinite}
@keyframes wcpulse{0%{transform:scale(1);opacity:.8}100%{transform:scale(1.6);opacity:0}}

.wechat-modal{position:fixed;inset:0;z-index:1000;background:rgba(15,23,42,.55);display:none;align-items:center;justify-content:center;padding:20px}
.wechat-modal.open{display:flex}
.wechat-box{background:#fff;border-radius:16px;max-width:320px;width:100%;padding:28px 24px;text-align:center;position:relative;animation:wcpop .25s}
@keyframes wcpop{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
.wechat-box .wc-close{position:absolute;top:12px;right:16px;font-size:24px;color:#94a3b8;cursor:pointer;line-height:1}
.wechat-box .wc-close:hover{color:#1f2937}
.wechat-box .wc-icon{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,#07c160,#05a74f);
  display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.wechat-box .wc-icon svg{width:32px;height:32px;fill:#fff}
.wechat-box h3{font-size:18px;color:#1f2937;margin-bottom:6px}
.wechat-box .wc-sub{font-size:13px;color:#6b7280;margin-bottom:18px}
.wechat-box .wc-qr{width:170px;height:170px;margin:0 auto 16px;background:#f6f9fb;border:1px solid #e5e7eb;border-radius:10px;
  display:flex;align-items:center;justify-content:center;overflow:hidden}
.wechat-box .wc-qr img{width:100%;height:100%;object-fit:contain}
.wechat-box .wc-id{display:inline-flex;align-items:center;gap:8px;background:#f0fdf4;color:#16a34a;font-size:15px;font-weight:700;
  padding:9px 18px;border-radius:22px;margin-bottom:8px}
.wechat-box .wc-copy{font-size:12px;color:#9ca3af;cursor:pointer;text-decoration:underline}
.wechat-box .wc-copy:hover{color:#6b7280}
.wechat-box .wc-tip{font-size:12px;color:#9ca3af;margin-top:10px}
.wechat-box .wc-copy{display:inline-block;background:none;border:none;font-family:inherit;font-size:12px;color:#9ca3af;cursor:pointer;text-decoration:underline;padding:4px 8px}
.wechat-box .wc-copy:hover{color:#6b7280}

/* ===== 无障碍：跳转链接（键盘用户可见，鼠标用户隐藏） ===== */
.skip-link{position:absolute;left:-9999px;top:0;z-index:10000;background:var(--primary);color:#fff;padding:12px 20px;border-radius:0 0 8px 0;font-weight:600}
.skip-link:focus{left:0}

/* ===== 焦点可见性（键盘导航） ===== */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* ===== 表单增强（新增） ===== */
.hp-field{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}
.field .req{color:var(--accent-dark)}
.field-hint{font-size:12px;color:var(--gray-light);text-align:right;margin-top:4px}
.field-err{font-size:12px;color:#dc2626;margin-top:5px;line-height:1.4}
.field input[aria-invalid="true"],.field textarea[aria-invalid="true"]{border-color:#dc2626;background:#fef2f2}
.field input:user-invalid,.field textarea:user-invalid{border-color:#dc2626}
.field select{width:100%;border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-size:15px;outline:none;font-family:inherit;background:#fff;cursor:pointer;appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath fill='%236b7280' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:11px;padding-right:38px}
.field select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.btn-block{width:100%;justify-content:center}
.btn-lg{padding:14px 38px;font-size:16px}
.btn:disabled{opacity:.65;cursor:not-allowed;transform:none!important}
.btn.is-loading{pointer-events:none}
.form-status{margin-top:14px;font-size:14px;line-height:1.6;min-height:1px}
.form-status.is-ok{padding:12px 14px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:10px;color:#15803d}
.form-status.is-err{padding:12px 14px;background:#fef2f2;border:1px solid #fecaca;border-radius:10px;color:#b91c1c}
.form-privacy{margin-top:14px;font-size:12px;color:var(--gray-light);line-height:1.6}
.contact-note{margin-top:20px;padding:16px;background:var(--primary-light);border-radius:10px;font-size:13px;color:var(--primary-dark);line-height:1.8}
.contact-note p{margin:0}
.contact-note p+p{margin-top:4px}
.tel-link{color:var(--accent);font-weight:700;font-size:20px;letter-spacing:.5px}
.tel-link:hover{text-decoration:underline}
.link-primary{color:var(--primary)}
.link-primary:hover{text-decoration:underline}
.h2-sm{font-size:22px}

/* ===== FAQ 手风琴（百度长尾词入口） ===== */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}
.faq-item summary{cursor:pointer;padding:18px 46px 18px 20px;font-size:16px;font-weight:600;color:var(--ink);position:relative;list-style:none;line-height:1.5}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;font-weight:300;color:var(--primary);transition:transform .2s;line-height:1}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item summary:hover{color:var(--primary)}
.faq-item p{padding:0 20px 20px;font-size:14px;color:var(--gray);line-height:1.9}

/* ===== CTA 通栏 ===== */
.cta-band{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;padding:56px 0}
.cta-band .sec-sub{color:#cffafe}
.cta-band .btn-primary{background:#fff;color:var(--primary);box-shadow:0 4px 14px rgba(0,0,0,.15)}
.cta-band .btn-primary:hover{background:#e0f2fe}

/* ===== 特色网格（首页优势区，避免内联样式） ===== */
.feature-grid{grid-template-columns:1fr 1fr}
@media(max-width:640px){.feature-grid{grid-template-columns:1fr}}

/* ===== 按钮浅色变体（Hero 内白描边按钮） ===== */
.btn-light{color:#fff!important;border-color:#fff!important;background:transparent!important}
.btn-light:hover{background:rgba(255,255,255,.16)!important;border-color:#fff!important;color:#fff!important}

/* ===== 锚点定位：避开 sticky 头部遮挡 ===== */
section[id], [id$="-title"]{scroll-margin-top:80px}
html{scroll-padding-top:80px}

/* ===== 面包屑 ===== */
.breadcrumb .container{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.breadcrumb span{color:#cbd5e1}

/* ===== 404 ===== */
.err-page{text-align:center;padding:90px 20px}
.err-page .code{font-size:82px;font-weight:800;color:var(--primary);line-height:1}
.err-page h1{font-size:22px;margin:14px 0 8px}
.err-page p{color:var(--gray);margin-bottom:24px}

/* ===== 打印优化 ===== */
@media print{
  .topbar,.site,.wechat-float,.wechat-modal,.cta-band,.nav-toggle{display:none!important}
  body{background:#fff}
  .card,.cert-item,.prod-card{box-shadow:none;border:1px solid #ddd}
}