/* =========================================================
   秦皇岛管易液压科技 PipeEase — 全新版式
   参照 UNIFLEX 蓝白工业风
   主色 #008ACA · 标题 #223650 · 正文 #2D3847
   ========================================================= */

:root{
  --primary:#008aca;
  --primary-dark:#006ba1;
  --primary-deep:#005a87;
  --primary-light:#e8f4fb;
  --heading:#223650;
  --text:#2d3847;
  --muted:#6c757d;
  --bg:#ffffff;
  --bg-soft:#f5f7fa;
  --line:#e5e8ec;
  --footer-bg:#1b2a3a;
  --footer-bg-deep:#162332;
  --footer-text:#b8c2cc;
  --radius:10px;
  --shadow-sm:0 1px 3px rgba(34,54,80,.08);
  --shadow-md:0 8px 24px rgba(34,54,80,.10);
  --shadow-lg:0 18px 44px rgba(34,54,80,.16);
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-dark);}
ul{list-style:none;}
.container{max-width:1600px;margin:0 auto;padding:0 24px;}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.site-header .container{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--heading);}
.brand img{height:48px;width:auto;}
.brand .brand-text{font-size:17px;line-height:1.25;}
.brand .brand-text small{display:block;font-size:12px;color:var(--muted);font-weight:400;}
.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav a{
  display:block;padding:9px 16px;color:var(--heading);font-size:15px;font-weight:500;
  border-radius:8px;position:relative;
}
.main-nav a:hover{color:var(--primary);background:var(--primary-light);}
.main-nav li.current a{color:var(--primary);background:var(--primary-light);}
.main-nav a small{display:block;font-size:11px;color:var(--muted);font-weight:400;text-align:center;}
.main-nav li.current a small{color:var(--primary);}
.nav-cta a{background:var(--primary);color:#fff!important;}
.nav-cta a:hover{background:var(--primary-dark);color:#fff!important;}
.nav-cta a small{color:#fff!important;}

/* ============ Hero ============ */
.hero{position:relative;background:#123;color:#fff;overflow:hidden;}
.hero-bg{position:absolute;inset:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.55;}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,30,48,.88) 0%,rgba(12,30,48,.45) 55%,rgba(12,30,48,.2) 100%);}
.hero .container{position:relative;z-index:2;padding-top:110px;padding-bottom:110px;}
.hero h1{font-size:44px;line-height:1.18;font-weight:700;max-width:640px;}
.hero h1 .en{display:block;font-size:20px;font-weight:500;color:#9fd4ef;margin-bottom:12px;letter-spacing:.5px;}
.hero p{font-size:18px;max-width:560px;margin:20px 0 30px;color:#dbe7f0;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn{display:inline-block;padding:13px 28px;border-radius:8px;font-size:16px;font-weight:600;transition:all .2s ease;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.55);}
.btn-outline:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08);}

/* ============ 区块 ============ */
.section{padding:72px 0;}
.section.soft{background:var(--bg-soft);}
.section-head{max-width:900px;margin:0 auto 44px;text-align:center;}
.section-head h2{font-size:32px;color:var(--heading);font-weight:700;}
.section-head h2 .en{display:block;font-size:14px;color:var(--primary);font-weight:600;letter-spacing:1px;margin-bottom:8px;text-transform:uppercase;}
.section-head p{color:var(--muted);margin-top:14px;font-size:16px;}

/* ============ 产品卡片 ============ */
.grid{display:grid;gap:24px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.card-img{height:220px;background:#f0f3f6;display:flex;align-items:center;justify-content:center;padding:18px;}
.card-img img{max-height:100%;max-width:100%;object-fit:contain;}
.card-body{padding:20px 22px 24px;}
.card-body h3{font-size:18px;color:var(--heading);font-weight:700;}
.card-body h3 small{display:block;font-size:14px;color:var(--muted);font-weight:400;margin-top:4px;}
.card-body p{color:var(--muted);font-size:14px;margin-top:10px;}
.card-link{display:inline-block;margin-top:14px;font-size:14px;font-weight:600;color:var(--primary);}
.card-link:hover{color:var(--primary-dark);}

/* ============ 下载横幅 ============ */
.download-band{
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;border-radius:var(--radius);padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
}
.download-band h3{font-size:24px;font-weight:700;}
.download-band h3 small{display:block;font-size:14px;font-weight:400;color:#cfe9f8;margin-top:6px;}
.download-band p{color:#dcecf7;margin-top:10px;font-size:15px;max-width:520px;}
.download-band .btn{flex:0 0 auto;background:#fff;color:var(--primary);}
.download-band .btn:hover{background:#eef6fb;color:var(--primary-dark);}

/* ============ 特性/服务 ============ */
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;transition:all .25s ease;}
.feature:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);}
.feature .ico{width:52px;height:52px;border-radius:12px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;color:var(--primary);margin-bottom:18px;}
.feature h3{font-size:18px;color:var(--heading);font-weight:700;}
.feature p{color:var(--muted);font-size:14px;margin-top:10px;}

/* ============ 新闻 ============ */
.news-item{display:flex;gap:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;transition:all .25s ease;}
.news-item:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);}
.news-item img{width:180px;height:130px;object-fit:cover;border-radius:8px;flex:0 0 180px;}
.news-item .date{font-size:13px;color:var(--primary);font-weight:600;}
.news-item h3{font-size:17px;color:var(--heading);margin-top:6px;font-weight:700;}
.news-item p{font-size:14px;color:var(--muted);margin-top:6px;}

/* ============ 页头（内页） ============ */
.page-hero{background:linear-gradient(120deg,#0c1e30 0%,#16344f 100%);color:#fff;padding:64px 0;}
.page-hero h1{font-size:36px;font-weight:700;}
.page-hero h1 .en{display:block;font-size:15px;color:#9fd4ef;font-weight:500;margin-top:6px;letter-spacing:.5px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);color:var(--footer-text);font-size:15px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding:60px 0 40px;}
.site-footer h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px;}
.site-footer a{color:var(--footer-text);}
.site-footer a:hover{color:#fff;}
.site-footer .brand img{height:44px;filter:brightness(0) invert(1);}
.footer-about p{margin-top:16px;color:var(--footer-text);max-width:340px;}
.footer-col ul li{margin-bottom:10px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;text-align:center;font-size:13px;color:#8b97a5;}
.footer-bottom a{color:#8b97a5;}
.footer-bottom a:hover{color:#fff;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:8px;background:rgba(255,255,255,.08);}
.footer-social a:hover{background:var(--primary);}
.footer-social img{height:20px;width:auto;}

/* ============ 下载页 ============ */
.catalog-wrap{display:grid;grid-template-columns:320px 1fr;gap:36px;align-items:start;}
.catalog-cover-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;position:sticky;top:100px;}
.catalog-cover-card img{border-radius:8px;width:100%;}
.catalog-info h2{font-size:28px;color:var(--heading);font-weight:700;}
.catalog-info h2 small{display:block;font-size:16px;color:var(--muted);font-weight:400;margin-top:8px;}
.catalog-info p{margin:16px 0;color:var(--text);}
.catalog-meta{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0;}
.catalog-meta span{background:var(--primary-light);color:var(--primary-dark);padding:7px 14px;border-radius:999px;font-size:13px;font-weight:500;}
.catalog-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px;}
.series-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:20px;}
.series-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;}
.series-item h4{font-size:16px;color:var(--heading);font-weight:700;}
.series-item p{font-size:14px;color:var(--muted);margin-top:6px;}

/* ============ 联系页 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start;}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;}
.contact-card h3{font-size:18px;color:var(--heading);margin-bottom:16px;font-weight:700;}
.contact-card li{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line);color:var(--text);}
.contact-card li b{min-width:70px;color:var(--heading);}
.contact-map{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);}
.contact-map img{width:100%;height:100%;object-fit:cover;}

/* ============ 响应式 ============ */
@media (max-width:960px){
  .grid-3,.series-grid{grid-template-columns:repeat(2,1fr);}
  .catalog-wrap{grid-template-columns:1fr;}
  .catalog-cover-card{position:static;max-width:340px;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:640px){
  .hero h1{font-size:32px;}
  .hero .container{padding-top:72px;padding-bottom:72px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:26px;}
  .grid-3,.series-grid,.footer-grid{grid-template-columns:1fr;}
  .news-item{flex-direction:column;}
  .news-item img{width:100%;flex:0 0 auto;}
  .download-band{flex-direction:column;align-items:flex-start;}
  .site-header .container{height:auto;padding:14px 24px;flex-wrap:wrap;}
  .main-nav ul{flex-wrap:wrap;}
}

/* ============ 顶部工具条（语言/职业生涯/视频） ============ */
.top-bar{background:#0c1e30;color:#b8d4e8;font-size:13px;}
.top-bar .container{display:flex;align-items:center;justify-content:space-between;min-height:38px;gap:12px;}
.top-bar .top-slogan{color:#9fbdd6;}








@media (max-width:640px){
  .top-bar .container{flex-direction:column;align-items:flex-start;padding:8px 16px;gap:6px;}
}






.top-links a{display:inline-flex;align-items:center;gap:5px;color:#cfe9f8;}
.top-links a:hover{color:#fff;}
.top-links a svg{color:#7fb3d9;}
.top-links a:hover svg{color:#fff;}
/* 语言下拉框 */
.lang-dropdown{position:relative;display:inline-block;}
.lang-btn{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);color:#fff;padding:5px 12px;border-radius:5px;cursor:pointer;font-size:13px;line-height:1;transition:all .2s ease;}
.lang-btn:hover{background:rgba(255,255,255,.18);}
.lang-btn img{width:16px;height:11px;border-radius:2px;box-shadow:0 0 0 1px rgba(255,255,255,.3);}
.lang-btn .arrow{font-size:9px;opacity:.8;margin-left:2px;transition:transform .2s ease;}
.lang-dropdown:hover .arrow,.lang-dropdown.open .arrow{transform:rotate(180deg);}
.lang-menu{position:absolute;top:calc(100% + 8px);right:0;background:#fff;border-radius:8px;box-shadow:0 14px 40px rgba(0,0,0,.30);padding:6px;min-width:170px;display:none;z-index:100;text-align:left;}
.lang-dropdown:hover .lang-menu,.lang-dropdown.open .lang-menu{display:block;}
.lang-menu li{list-style:none;}
.lang-menu li a{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:5px;color:#2d3847;font-size:13px;line-height:1.3;}
.lang-menu li a img{width:18px;height:12px;border-radius:2px;box-shadow:0 0 0 1px #e5e8ec;}
.lang-menu li a:hover{background:var(--primary-light);color:var(--primary-dark);}
.lang-menu li.active a{background:var(--primary-light);color:var(--primary-dark);font-weight:600;}
.lang-menu li.active a::after{content:"✓";margin-left:auto;color:var(--primary);font-weight:700;}
@media (max-width:640px){
  .lang-menu{left:0;right:auto;max-width:calc(100vw - 32px);}
}

/* 手机端 header 修复 */
@media (max-width:640px){
  .brand img{height:32px;width:auto;max-width:210px;object-fit:contain;object-position:left center;}
  .brand .brand-text{display:none;}
  .main-nav a{font-size:14px;padding:7px 9px;}
  .main-nav a small{display:none;}
}

/* 产品下拉菜单 */
.main-nav li.has-dropdown{position:relative;}
.main-nav .dropdown-menu{position:absolute;top:100%;left:0;min-width:280px;background:#fff;border-radius:8px;box-shadow:0 16px 40px rgba(0,0,0,.18);padding:6px;display:none;z-index:100;text-align:left;border:1px solid var(--line);}
.main-nav li.has-dropdown:hover .dropdown-menu{display:block;}
.main-nav .dropdown-menu li{display:block;margin:0;}
.main-nav .dropdown-menu a{display:block;padding:10px 14px;font-size:14px;color:#2d3847;border-radius:5px;white-space:nowrap;font-weight:500;}
.main-nav .dropdown-menu a:hover{background:var(--primary-light);color:var(--primary-dark);}
.main-nav .dropdown-menu a small{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:1px;}

.lang-dropdown::before{content:"";position:absolute;top:100%;left:0;right:0;height:10px;z-index:99;}


/* ============ 视频页 ============ */
.video-frame{position:relative;width:100%;background:#000;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);}
.video-frame::before{content:"";display:block;padding-top:56.25%;}
.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px;align-items:start;}
.video-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;transition:all .25s ease;}
.video-item:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);}
.video-item .video-frame{border-radius:8px;}
.video-item h4{margin-top:12px;font-size:15px;color:var(--heading);font-weight:600;text-align:center;}
.video-empty{grid-column:1/-1;text-align:center;padding:60px 20px;color:var(--muted);background:var(--bg-soft);border-radius:var(--radius);border:1px dashed var(--line);}
.video-frame.douyin{width:100%;max-width:340px;margin:0 auto;}
.video-frame.douyin::before{content:none;}
.video-item.landscape .video-frame.douyin{max-width:620px;}
.douyin-card{display:flex;align-items:center;gap:20px;background:#111;color:#fff;border-radius:var(--radius);padding:28px 32px;margin-bottom:28px;box-shadow:var(--shadow-md);}
.douyin-card .douyin-logo{width:56px;height:56px;flex:0 0 auto;border-radius:14px;background:#000;display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 1px rgba(255,255,255,.18);}
.douyin-card .douyin-logo img{width:42px;height:42px;}
.douyin-card h3{font-size:20px;font-weight:700;}
.douyin-card p{color:#c9d1d9;margin-top:4px;font-size:14px;}
.douyin-card .btn{margin-left:auto;flex:0 0 auto;background:#fe2c55;color:#fff;border:none;}
.douyin-card .btn:hover{background:#e62249;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
@media (max-width:960px){.video-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){
  .video-grid{grid-template-columns:1fr;}
  .douyin-card{flex-direction:column;text-align:center;padding:24px 20px;}
  .douyin-card .btn{margin-left:0;}
  .video-frame.douyin{max-width:300px;}
  .video-item.landscape .video-frame.douyin{max-width:100%;}
}