/* ========== 石家庄奥能制药设备 - 全站公共样式 ========== */
:root{
  --primary:#0a3d7c;
  --primary-dark:#072a56;
  --primary-light:#1e5aa8;
  --accent:#c8a96a;
  --accent-light:#e0c887;
  --text:#1d2939;
  --text-light:#5b6a80;
  --text-muted:#92a0b3;
  --bg:#ffffff;
  --bg-light:#f6f8fb;
  --bg-dark:#0c1f3a;
  --border:#e5eaf1;
  --shadow-sm:0 2px 10px rgba(10,61,124,.06);
  --shadow-md:0 10px 30px rgba(10,61,124,.10);
  --shadow-lg:0 24px 60px rgba(10,61,124,.15);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans CN","Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.75;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:all .3s ease}
a:hover{color:var(--accent)}
ul,ol{list-style:none}
h1,h2,h3,h4,h5{font-weight:700;line-height:1.3;color:var(--primary-dark)}

/* ====== 容器 ====== */
.container{max-width:1280px;margin:0 auto;padding:0 32px}

/* ====== 顶部导航 ====== */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;transition:all .35s ease;padding:20px 0;background:transparent}
.header.scrolled{background:rgba(255,255,255,.97);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:0 2px 20px rgba(10,61,124,.08);padding:14px 0}
.nav-wrap{display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:12px;color:#fff;transition:color .3s;cursor:pointer}
.header.scrolled .logo{color:var(--primary-dark)}
.logo-mark{width:44px;height:44px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:6px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:20px;box-shadow:0 4px 14px rgba(10,61,124,.35)}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-cn{font-size:17px;font-weight:700;letter-spacing:1.5px}
.logo-en{font-size:10px;letter-spacing:2.5px;color:var(--accent);text-transform:uppercase;font-weight:500;margin-top:2px}
.nav-menu{display:flex;align-items:center;gap:40px}
.nav-menu a{color:rgba(255,255,255,.9);font-size:15px;font-weight:500;position:relative;padding:8px 0;transition:color .3s;letter-spacing:.5px}
.header.scrolled .nav-menu a{color:var(--text)}
.nav-menu a:hover,.nav-menu a.active{color:var(--accent)}
.nav-menu a::after{content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:var(--accent);transition:all .3s;transform:translateX(-50%)}
.nav-menu a:hover::after,.nav-menu a.active::after{width:100%}
.nav-cta{background:var(--accent);color:#fff!important;padding:10px 26px!important;border-radius:4px;font-weight:500;transition:all .3s;letter-spacing:1px}
.nav-cta:hover{background:#b89454;color:#fff!important;transform:translateY(-2px);box-shadow:0 8px 20px rgba(200,169,106,.35)}
.nav-cta::after{display:none!important}
.nav-toggle{display:none;width:40px;height:40px;border:0;background:transparent;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{width:22px;height:2px;background:#fff;transition:all .3s;border-radius:1px}
.header.scrolled .nav-toggle span{background:var(--primary-dark)}

/* ====== 通用区块 ====== */
.section{padding:110px 0;position:relative}
.section-alt{background:var(--bg-light)}
.section-dark{background:var(--bg-dark);color:#fff}
.section-dark h2,.section-dark h3,.section-dark h4{color:#fff}
.section-head{text-align:center;margin-bottom:72px}
.section-tag{display:inline-block;font-size:12px;letter-spacing:4px;color:var(--accent);font-weight:600;text-transform:uppercase;margin-bottom:16px}
.section-title{font-size:clamp(28px,3.4vw,42px);font-weight:700;color:var(--primary-dark);margin-bottom:18px;position:relative;display:inline-block;letter-spacing:1px}
.section-title::after{content:"";display:block;width:52px;height:3px;background:var(--accent);margin:16px auto 0}
.section-desc{color:var(--text-light);max-width:680px;margin:20px auto 0;font-size:15.5px;line-height:1.9;letter-spacing:.3px}
.section-dark .section-desc{color:rgba(255,255,255,.72)}
.section-dark .section-title{color:#fff}

/* ====== 按钮 ====== */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 36px;border-radius:4px;font-size:14.5px;font-weight:500;cursor:pointer;border:0;transition:all .35s ease;letter-spacing:1.5px;font-family:inherit}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#b89454;color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(200,169,106,.38)}
.btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.65)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:rgba(200,169,106,.08)}
.btn-dark{background:var(--primary);color:#fff}
.btn-dark:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(10,61,124,.28)}

/* ====== 通用页内Banner ====== */
.page-banner{min-height:440px;background:linear-gradient(135deg,rgba(10,61,124,.88),rgba(7,42,86,.93)),url("/static/images/hero-bg.png") center/cover;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;padding-top:80px;position:relative;overflow:hidden}
.page-banner::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 50%,rgba(200,169,106,.1),transparent 60%)}
.page-banner::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:80px 80px}
.page-banner-inner{position:relative;z-index:2}
.page-banner h1{font-size:clamp(32px,4.2vw,50px);color:#fff;font-weight:700;margin-bottom:16px;letter-spacing:3px}
.page-banner p{color:rgba(255,255,255,.82);font-size:15px;letter-spacing:5px;text-transform:uppercase;margin-top:8px}
.crumb{margin-top:24px;font-size:13.5px;color:rgba(255,255,255,.7);letter-spacing:1px}
.crumb a{color:rgba(255,255,255,.8)}
.crumb a:hover{color:var(--accent)}
.crumb span{margin:0 10px;color:rgba(255,255,255,.45)}

/* ====== 产品/方案/新闻卡片通用 ====== */
.card-grid{display:grid;gap:30px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.prod-card{background:#fff;border-radius:6px;overflow:hidden;box-shadow:var(--shadow-sm);transition:all .45s cubic-bezier(.2,.8,.2,1);cursor:pointer;display:block;border:1px solid var(--border)}
.prod-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg);border-color:transparent}
.prod-img{position:relative;aspect-ratio:4/3;overflow:hidden;background:linear-gradient(135deg,#e8eef6,#d7e3f0)}
.prod-img img{width:100%;height:100%;object-fit:cover;transition:transform .7s ease;display:block}
.prod-card:hover .prod-img img{transform:scale(1.07)}
.prod-img::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(10,61,124,.55),transparent 50%);opacity:0;transition:opacity .35s}
.prod-card:hover .prod-img::after{opacity:1}
.prod-num{position:absolute;top:20px;left:20px;font-size:13px;font-weight:600;color:var(--accent);letter-spacing:2px;z-index:2;background:rgba(10,61,124,.6);padding:4px 10px;border-radius:2px;backdrop-filter:blur(6px)}
.prod-body{padding:24px 26px 30px;border-top:2px solid transparent;transition:border-color .3s;background:#fff}
.prod-card:hover .prod-body{border-top-color:var(--accent)}
.prod-body h3{font-size:18.5px;font-weight:600;color:var(--primary-dark);margin-bottom:10px;transition:color .3s;letter-spacing:.5px}
.prod-card:hover .prod-body h3{color:var(--primary)}
.prod-body p{font-size:14px;color:var(--text-light);line-height:1.75}
.prod-arrow{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:13.5px;color:var(--accent);font-weight:500;transform:translateX(-4px);opacity:0;transition:all .35s}
.prod-card:hover .prod-arrow{transform:translateX(0);opacity:1}
.prod-arrow svg{width:16px;height:16px;transition:transform .3s}
.prod-card:hover .prod-arrow svg{transform:translateX(4px)}

/* ====== 入场动画：默认完全可见，JS 仅用于触发"再次入场"动效 ====== */
/* 核心原则：所有内容 opacity:1，永远可见，绝不会出现空白 */
.fade-item{opacity:1;transform:translateY(0);transition:none}
.fade-item.scrolled-in{opacity:1;transform:translateY(0);animation:fadeUp .85s cubic-bezier(.2,.8,.2,1) both}
.fade-item.fade-left.scrolled-in{animation:fadeRight .85s cubic-bezier(.2,.8,.2,1) both}
.fade-item.fade-right.scrolled-in{animation:fadeLeft .85s cubic-bezier(.2,.8,.2,1) both}
.fade-item.fade-zoom.scrolled-in{animation:zoomIn .85s cubic-bezier(.2,.8,.2,1) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(36px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeLeft{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:translateX(0)}}
@keyframes fadeRight{from{opacity:0;transform:translateX(-40px)}to{opacity:1;transform:translateX(0)}}
@keyframes zoomIn{from{opacity:0;transform:scale(.94)}to{opacity:1;transform:scale(1)}}

/* ====== Footer ====== */
.footer{background:#071628;color:rgba(255,255,255,.65);padding-top:80px}
.footer-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1.4fr;gap:56px;padding-bottom:56px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-col h4{color:#fff;font-size:15.5px;font-weight:600;margin-bottom:24px;letter-spacing:1.5px;position:relative;padding-bottom:14px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:30px;height:2px;background:var(--accent)}
.footer-col p,.footer-col li{font-size:13.5px;line-height:2.1;color:rgba(255,255,255,.62)}
.footer-col li{margin-bottom:4px}
.footer-col li a{color:rgba(255,255,255,.62);transition:all .3s;display:inline-block}
.footer-col li a:hover{color:var(--accent);transform:translateX(4px)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.footer-brand .logo-mark{width:40px;height:40px;font-size:18px}
.footer-brand .logo-cn{color:#fff;font-size:16.5px;letter-spacing:1px}
.footer-brand .logo-en{color:var(--accent);font-size:9px;letter-spacing:2px}
.contact-item{display:flex;gap:12px;margin-bottom:12px;align-items:flex-start;font-size:13px;line-height:1.8}
.contact-item svg{width:16px;height:16px;min-width:16px;color:var(--accent);margin-top:5px}
.footer-bottom{padding:22px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.4);letter-spacing:.8px}

/* ====== 响应式 ====== */
@media(max-width:1100px){
  .container{padding:0 28px}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:40px}
}
@media(max-width:992px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .section{padding:90px 0}
}
@media(max-width:768px){
  .container{padding:0 20px}
  .section{padding:70px 0}
  .section-head{margin-bottom:48px}
  .nav-menu{position:fixed;top:0;right:-100%;width:78%;max-width:320px;height:100vh;background:#fff;flex-direction:column;align-items:flex-start;padding:90px 28px 32px;gap:4px;box-shadow:-10px 0 40px rgba(0,0,0,.18);transition:right .4s cubic-bezier(.2,.8,.2,1);z-index:999}
  .nav-menu.open{right:0}
  .nav-menu a{color:var(--text)!important;font-size:16px;width:100%;padding:14px 0;border-bottom:1px solid var(--border)}
  .nav-menu a.nav-cta{color:#fff!important;border:0;text-align:center;justify-content:center;margin-top:16px;padding:14px!important;border-radius:4px}
  .nav-toggle{display:flex;z-index:1001}
  .nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.active span:nth-child(2){opacity:0}
  .nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .grid-3,.grid-2,.grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .page-banner{min-height:320px;padding-top:70px}
  .page-banner h1{letter-spacing:2px}
}