/* ================================================================
   北京清大思创科技发展有限公司 - 官网样式
   设计理念：融合51.la的卡片式布局 + 行业专业感 + 现代交互体验
   主色调：专业蓝 #0c5fa8 / 科技青 #00b4d8
   ================================================================ */

/* ===== CSS Reset & Base ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#0c5fa8;
  --primary-dark:#094878;
  --primary-light:#1a7fd4;
  --accent:#00b4d8;
  --accent-light:#48cae4;
  --dark:#0d1b2a;
  --dark-2:#1b2838;
  --text:#333;
  --text-light:#666;
  --text-muted:#999;
  --bg:#f8f9fa;
  --bg-white:#fff;
  --border:#e0e0e0;
  --shadow:0 2px 12px rgba(0,0,0,.08);
  --shadow-hover:0 8px 30px rgba(12,95,168,.15);
  --radius:8px;
  --radius-lg:16px;
  --transition:all .3s ease;
  --max-width:1200px;
}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  color:var(--text);background:var(--bg-white);line-height:1.8;overflow-x:hidden;
}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul{list-style:none}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
.section{padding:80px 0}
.section-lg{padding:100px 0}
.bg-light{background:var(--bg)}
.bg-dark{background:var(--dark);color:#fff}
.bg-primary{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff}
.text-center{text-align:center}
.hidden{display:none}

/* ===== Typography ===== */
h1,h2,h3,h4,h5{font-weight:700;line-height:1.4}
.section-title{font-size:2rem;text-align:center;margin-bottom:12px;color:var(--dark)}
.section-title.light{color:#fff}
.section-subtitle{text-align:center;color:var(--text-light);font-size:1rem;margin-bottom:50px;max-width:700px;margin-left:auto;margin-right:auto}
.section-subtitle.light{color:rgba(255,255,255,.7)}
.section-divider{width:60px;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));margin:0 auto 30px;border-radius:2px}

/* ===== Top Bar ===== */
.top-bar{
  background:var(--dark);
  color:rgba(255,255,255,.7);
  font-size:.8rem;
  padding:6px 0;
}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.top-bar a{color:var(--accent-light)}
.top-bar .top-contact span{margin-right:18px}
.top-bar .top-contact i{margin-right:5px;color:var(--accent)}

/* ===== Header / Navigation ===== */
.header{
  position:sticky;top:0;z-index:1000;
  background:#fff;
  box-shadow:0 2px 10px rgba(0,0,0,.06);
  transition:var(--transition);
}
.header.scrolled{box-shadow:0 4px 20px rgba(0,0,0,.1)}
.nav{display:flex;justify-content:space-between;align-items:center;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-img{
  height:44px;width:auto;display:block;flex-shrink:0;
}
.logo-text{font-size:1.15rem;font-weight:700;color:var(--primary);line-height:1.3}
.logo-text small{display:block;font-size:.7rem;color:var(--text-muted);font-weight:400;letter-spacing:1px}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu>li{position:relative}
.nav-menu>li>a{
  display:block;padding:0 16px;line-height:72px;font-size:.95rem;font-weight:500;color:var(--text);
}
.nav-menu>li>a:hover,.nav-menu>li>a.active{color:var(--primary)}
.nav-menu>li>a.active::after{
  content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);
  width:30px;height:3px;background:var(--primary);border-radius:2px;
}
/* Dropdown */
.nav-dropdown{
  position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(10px);
  background:#fff;min-width:180px;border-radius:var(--radius);
  box-shadow:0 8px 30px rgba(0,0,0,.12);
  opacity:0;visibility:hidden;pointer-events:none;transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
  padding:8px 0;z-index:1001;
}
.nav-menu>li:hover .nav-dropdown,
.nav-dropdown.open{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.nav-dropdown li a{display:block;padding:10px 20px;font-size:.85rem;color:var(--text-light)}
.nav-dropdown li a:hover{background:var(--bg);color:var(--primary);padding-left:26px}
/* Mobile toggle */
.nav-toggle{display:none;font-size:1.5rem;background:none;border:none;cursor:pointer;color:var(--primary)}

/* ===== Hero / Banner ===== */
.hero{
  position:relative;height:560px;overflow:hidden;
  background:#0d1b2a;
}
.hero-slides{position:relative;width:100%;height:100%}
.hero-slide{
  position:absolute;top:0;left:0;width:100%;height:100%;
  display:flex;align-items:center;
  opacity:0;transition:opacity 1s ease,transform 1.2s ease;
  transform:scale(1.05);
  background-size:cover;background-position:center center;background-repeat:no-repeat;
}
.hero-slide.active{opacity:1;transform:scale(1)}
.hero-slide:nth-child(1){background-image:url('../images/hero-slide-1.png')}
.hero-slide:nth-child(2){background-image:url('../images/hero-slide-2.png')}
.hero-slide:nth-child(3){background-image:url('../images/hero-slide-3.png')}
.hero-slide::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,
    rgba(5,22,48,.92) 0%,
    rgba(8,40,75,.82) 40%,
    rgba(12,60,110,.5) 65%,
    transparent 85%);
}
.hero-slide::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(0deg,rgba(5,22,48,.55) 0%,transparent 30%);
  pointer-events:none;
}
.hero-content{position:relative;z-index:2;color:#fff;max-width:720px;padding:0;text-shadow:0 3px 10px rgba(0,0,0,.55),0 1px 3px rgba(0,0,0,.7)}
.hero-content .hero-tag{
  display:inline-block;padding:6px 16px;background:rgba(0,180,216,.25);
  border:1px solid rgba(0,180,216,.55);border-radius:20px;
  font-size:.85rem;color:#c8faff;margin-bottom:18px;
  text-shadow:none;backdrop-filter:blur(4px);
}
.hero-content h1{font-size:2.6rem;margin-bottom:16px;line-height:1.35;color:#fff;font-weight:700}
.hero-content p{font-size:1.05rem;color:rgba(255,255,255,.92);margin-bottom:28px;line-height:1.8}
.hero-buttons{display:flex;gap:14px;flex-wrap:wrap}
.hero-buttons .btn{padding:13px 30px;border-radius:var(--radius);font-weight:500}
.hero-buttons .btn-outline{border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.08)}
.hero-buttons .btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.18)}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 32px;border-radius:var(--radius);font-size:.95rem;font-weight:500;
  transition:var(--transition);cursor:pointer;border:none;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-light);transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,180,216,.4)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.4)}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.btn-white{background:#fff;color:var(--primary)}
.btn-white:hover{background:var(--bg);transform:translateY(-2px)}
.hero-dots{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.hero-dots button{width:12px;height:12px;border-radius:50%;border:2px solid rgba(255,255,255,.5);background:transparent;cursor:pointer;transition:var(--transition)}
.hero-dots button.active{background:#fff;border-color:#fff;width:30px;border-radius:6px}
.hero-deco{
  position:absolute;right:5%;top:50%;transform:translateY(-50%);
  width:350px;height:350px;z-index:1;
  background:radial-gradient(circle,rgba(0,180,216,.2) 0%,transparent 70%);
  border-radius:50%;animation:pulse 4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{transform:translateY(-50%) scale(1);opacity:.5}50%{transform:translateY(-50%) scale(1.1);opacity:.8}}

/* ===== Stat Counter Section ===== */
.stats{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;padding:60px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat-item .stat-num{font-size:2.8rem;font-weight:700;color:#fff;display:block}
.stat-item .stat-num .plus{color:var(--accent-light)}
.stat-item .stat-label{font-size:.9rem;color:rgba(255,255,255,.7);margin-top:8px}
.stat-item{border-right:1px solid rgba(255,255,255,.15)}
.stat-item:last-child{border-right:none}

/* ===== Card Grid ===== */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px}
.card{
  background:#fff;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);transition:var(--transition);
  border:1px solid var(--border);
}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover);border-color:var(--primary-light)}
.card-img{height:200px;overflow:hidden;background:var(--bg)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .card-img img{transform:scale(1.08)}
.card-body{padding:24px}
.card-body h3{font-size:1.2rem;margin-bottom:10px;color:var(--dark)}
.card-body p{font-size:.9rem;color:var(--text-light);line-height:1.7}
.card-tag{display:inline-block;padding:3px 12px;background:rgba(12,95,168,.08);color:var(--primary);border-radius:12px;font-size:.75rem;margin-bottom:12px}

/* ===== Service Cards (homepage) ===== */
.service-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
.service-card{
  display:block;background:#fff;border-radius:var(--radius);padding:36px 24px;text-align:center;
  box-shadow:var(--shadow);transition:var(--transition);position:relative;overflow:hidden;
  border-top:3px solid transparent;color:inherit;text-decoration:none;
}
.service-card::before{
  content:'';position:absolute;top:0;left:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transition:var(--transition);transform-origin:left;
}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);color:inherit}
.service-card:hover::before{transform:scaleX(1)}
.service-icon{
  width:64px;height:64px;margin:0 auto 20px;
  background:linear-gradient(135deg,rgba(12,95,168,.1),rgba(0,180,216,.1));
  border-radius:16px;display:flex;align-items:center;justify-content:center;
  font-size:1.8rem;
}
.service-card h3{font-size:1.1rem;margin-bottom:8px;color:var(--dark)}
.service-card p{font-size:.85rem;color:var(--text-light);line-height:1.7}

/* ===== Feature Areas (homepage) ===== */
.feature-areas{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-area-card{
  display:block;background:#fff;border-radius:var(--radius-lg);padding:32px 24px;text-align:center;
  box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border);
  color:inherit;text-decoration:none;position:relative;overflow:hidden;
}
.feature-area-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover);color:inherit;border-color:var(--primary-light)}
.feature-area-icon{
  width:72px;height:72px;margin:0 auto 20px;
  background:linear-gradient(135deg,rgba(12,95,168,.1),rgba(0,180,216,.1));
  border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:1.8rem;color:var(--primary);
}
.feature-area-card h3{font-size:1.15rem;margin-bottom:12px;color:var(--dark)}
.feature-area-card p{font-size:.85rem;color:var(--text-light);line-height:1.7;margin-bottom:20px}
.feature-area-link{display:inline-flex;align-items:center;gap:6px;font-size:.85rem;color:var(--primary);font-weight:500}
.feature-area-card:hover .feature-area-link{color:var(--accent)}
@media(max-width:992px){.feature-areas{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.feature-areas{grid-template-columns:1fr}}

/* ===== About Section (homepage) ===== */
.about-section{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-text h2{font-size:2rem;margin-bottom:20px;color:var(--dark)}
.about-text p{color:var(--text-light);margin-bottom:16px;line-height:2}
.about-features{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.about-feature{display:flex;align-items:center;gap:12px;font-size:.9rem;color:var(--text)}
.about-feature .check{width:24px;height:24px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.7rem;flex-shrink:0}
.home-about-text{text-align:left}
.home-about-text p{line-height:2;margin-bottom:16px;color:var(--text-light)}
.home-about-text p.lead{font-size:1.05rem;color:var(--text);font-weight:500;margin-bottom:18px}
.home-about-text .home-about-more{margin-top:34px}
.home-about-text .btn-dark{display:inline-flex}
@media(max-width:560px){
  .home-about-text .about-features{grid-template-columns:1fr;gap:12px}
}
.about-visual{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  min-height:260px;display:flex;align-items:center;justify-content:center;
}
.about-visual .about-visual-inner{text-align:center;color:#fff;padding:28px 32px}
.about-visual .about-visual-inner .big{font-size:2.8rem;font-weight:700;opacity:.9}
.about-visual .about-visual-inner .small{font-size:1rem;margin-top:6px;opacity:.85}
.about-visual .about-visual-inner [style*="border-top"]{margin-top:18px!important;padding-top:18px!important}

/* ===== Process Flow (数字化加工) ===== */
.process-flow{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}
.process-step{
  flex:1;min-width:160px;max-width:200px;
  background:#fff;border-radius:var(--radius);padding:24px 16px;text-align:center;
  position:relative;box-shadow:var(--shadow);transition:var(--transition);
}
.process-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.process-step .step-num{
  width:40px;height:40px;margin:0 auto 14px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:1rem;
}
.process-step h4{font-size:.9rem;margin-bottom:6px;color:var(--dark)}
.process-step p{font-size:.75rem;color:var(--text-light);line-height:1.6}
.process-arrow{display:flex;align-items:center;color:var(--primary);font-size:1.5rem}

/* ===== Table ===== */
.data-table{width:100%;border-collapse:collapse;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.data-table th{background:var(--primary);color:#fff;padding:14px 16px;text-align:left;font-size:.9rem;font-weight:500}
.data-table td{padding:12px 16px;border-bottom:1px solid var(--border);font-size:.88rem}
.data-table tr:nth-child(even){background:var(--bg)}
.data-table tr:hover{background:rgba(12,95,168,.04)}

/* ===== News List ===== */
.news-list{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.news-item{
  display:flex;gap:20px;padding:20px;background:#fff;border-radius:var(--radius);
  box-shadow:var(--shadow);transition:var(--transition);align-items:flex-start;
  color:inherit;text-decoration:none;
}
.news-item:hover{box-shadow:var(--shadow-hover);transform:translateX(4px);color:inherit}
.news-date{text-align:center;flex-shrink:0;width:64px;padding:10px 0;background:var(--bg);border-radius:var(--radius)}
.news-date .day{font-size:1.6rem;font-weight:700;color:var(--primary);line-height:1.2}
.news-date .month{font-size:.75rem;color:var(--text-muted)}
.news-content h4{font-size:1rem;margin-bottom:8px;color:var(--dark)}
.news-content h4:hover{color:var(--primary)}
.news-content p{font-size:.85rem;color:var(--text-light);line-height:1.6}

/* ===== Case Cards ===== */
.case-card{
  display:block;background:#fff;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);
  transition:var(--transition);border:1px solid var(--border);color:inherit;text-decoration:none;
}
.case-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover);color:inherit}
.case-header{background:linear-gradient(135deg,var(--primary),var(--accent));padding:30px;color:#fff}
.case-header h3{font-size:1.15rem;margin-bottom:8px}
.case-header .case-tag{display:inline-block;padding:2px 10px;background:rgba(255,255,255,.2);border-radius:10px;font-size:.75rem}
.case-body{padding:24px}
.case-body .case-info{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:16px}
.case-body .case-info-item{flex:1;min-width:120px;text-align:center;padding:12px;background:var(--bg);border-radius:var(--radius)}
.case-body .case-info-item .num{font-size:1.4rem;font-weight:700;color:var(--primary)}
.case-body .case-info-item .label{font-size:.75rem;color:var(--text-muted)}
.case-body ul{padding-left:0}
.case-body ul li{font-size:.85rem;color:var(--text-light);padding:4px 0;padding-left:20px;position:relative}
.case-body ul li::before{content:'';position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ===== Product Cards ===== */
.product-card{
  display:block;background:#fff;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);
  transition:var(--transition);border:1px solid var(--border);color:inherit;text-decoration:none;
}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);color:inherit}
.product-card .product-img{height:200px;overflow:hidden;background:var(--bg);display:flex;align-items:center;justify-content:center}
.product-card .product-img img{max-height:100%;width:auto;object-fit:contain}
.product-card .product-body{padding:20px}
.product-card .product-body h4{font-size:1rem;margin-bottom:6px;color:var(--dark)}
.product-card .product-body p{font-size:.82rem;color:var(--text-light);line-height:1.6}
.product-card .product-features{margin-top:12px;display:flex;flex-wrap:wrap;gap:6px}
.product-card .product-features span{padding:2px 8px;background:var(--bg);border-radius:4px;font-size:.72rem;color:var(--text-light)}

/* ===== Tab System ===== */
.tabs{display:flex;gap:0;border-bottom:2px solid var(--border);margin-bottom:30px;flex-wrap:wrap}
.tab{padding:12px 24px;cursor:pointer;font-size:.95rem;color:var(--text-light);border-bottom:2px solid transparent;margin-bottom:-2px;transition:var(--transition)}
.tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}
.tab:hover{color:var(--primary)}
.tab-content{display:none}
.tab-content.active{display:block;animation:fadeIn .4s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* ===== Timeline (组织架构/历程) ===== */
.timeline{position:relative;padding-left:40px}
.timeline::before{content:'';position:absolute;left:12px;top:0;bottom:0;width:2px;background:linear-gradient(var(--primary),var(--accent))}
.timeline-item{position:relative;padding-bottom:30px}
.timeline-item::before{content:'';position:absolute;left:-34px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--primary);border:2px solid #fff;box-shadow:0 0 0 2px var(--primary)}
.timeline-item h4{font-size:1rem;color:var(--dark);margin-bottom:6px}
.timeline-item p{font-size:.88rem;color:var(--text-light)}

/* ===== Personnel 10 Categories ===== */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.cat-item{
  background:#fff;border-radius:var(--radius);padding:20px;
  box-shadow:var(--shadow);transition:var(--transition);
  border-left:4px solid var(--primary);
}
.cat-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.cat-item .cat-num{font-size:1.8rem;font-weight:700;color:var(--primary);opacity:.3}
.cat-item h4{font-size:.95rem;margin:8px 0;color:var(--dark)}
.cat-item p{font-size:.8rem;color:var(--text-light);line-height:1.5}

/* ===== Contact Form ===== */
.contact-section{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-form input,.contact-form textarea,.contact-form select{
  width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius);
  font-size:.9rem;margin-bottom:16px;transition:var(--transition);font-family:inherit;
}
.contact-form input:focus,.contact-form textarea:focus,.contact-form select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(12,95,168,.1)
}
.contact-form textarea{resize:vertical;min-height:120px}
.contact-info-card{background:#fff;border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow)}
.contact-info-card h3{font-size:1.3rem;margin-bottom:20px;color:var(--dark)}
.contact-info-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:18px}
.contact-info-item .icon{width:40px;height:40px;background:rgba(12,95,168,.08);border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1.1rem}
.contact-info-item .info h4{font-size:.9rem;color:var(--text-muted);margin-bottom:2px}
.contact-info-item .info p{font-size:1rem;color:var(--text);font-weight:500}
.contact-service-card{
  display:flex;align-items:center;gap:16px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-radius:var(--radius-lg);padding:18px 22px;color:#fff;margin-top:18px;
  box-shadow:var(--shadow);transition:var(--transition);
}
.contact-service-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.contact-service-card .contact-service-icon{
  width:44px;height:44px;background:rgba(255,255,255,.15);border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:1.15rem;flex-shrink:0;
}
.contact-service-card h4{font-size:1rem;margin-bottom:2px}
.contact-service-card p{font-size:.8rem;color:rgba(255,255,255,.8);margin-bottom:2px}
.contact-service-card a{font-size:1.1rem;font-weight:700;color:#fff}
.contact-service-card a:hover{color:#e0f7ff}

/* ===== CTA Banner ===== */
.cta-banner{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  border-radius:var(--radius-lg);padding:50px;text-align:center;color:#fff;
  position:relative;overflow:hidden;
}
.cta-banner::before{
  content:'';position:absolute;right:-50px;top:-50px;width:200px;height:200px;
  background:radial-gradient(circle,rgba(0,180,216,.2) 0%,transparent 70%);border-radius:50%;
}
.cta-banner h2{font-size:1.8rem;margin-bottom:12px;position:relative}
.cta-banner p{font-size:1rem;color:rgba(255,255,255,.8);margin-bottom:24px;position:relative}
.cta-banner .btn{position:relative}

/* ===== Page Banner (inner pages) ===== */
.page-banner{
  height:240px;background:linear-gradient(135deg,#0d1b2a 0%,#0c5fa8 100%);
  display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;
  position:relative;overflow:hidden;
}
.page-banner::before{
  content:'';position:absolute;right:10%;top:50%;transform:translateY(-50%);
  width:300px;height:300px;background:radial-gradient(circle,rgba(0,180,216,.15) 0%,transparent 60%);border-radius:50%;
}
.page-banner h1{font-size:2.2rem;position:relative;z-index:2}
.page-banner .breadcrumb{position:relative;z-index:2;font-size:.85rem;color:rgba(255,255,255,.6);margin-top:10px}
.page-banner .breadcrumb a{color:var(--accent-light)}

/* ===== Footer ===== */
.footer{background:var(--dark);color:rgba(255,255,255,.7);padding:42px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px 28px;margin-bottom:28px;align-items:start}
.footer-col h4{color:#fff;font-size:.95rem;margin-bottom:14px}
.footer-col p{font-size:.82rem;line-height:1.7;margin-bottom:10px}
.footer-col ul li{padding:3px 0;font-size:.82rem}
.footer-col ul li a:hover{color:var(--accent-light)}
.footer-col .footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-col .footer-logo .logo-img{height:32px}
.footer-col .footer-logo .logo-text{color:#fff;font-size:.95rem}
.footer-col .footer-logo .logo-text small{font-size:.65rem;color:rgba(255,255,255,.6);letter-spacing:.5px}
.footer-col-contact{min-width:0}
.footer-contact-hint{margin-bottom:10px;font-size:.82rem}
.footer-qr-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(60px,1fr));gap:10px;max-width:180px}
.footer-qr-item{display:flex;flex-direction:column;align-items:center;text-align:center}
.footer-qr{width:100%;max-width:72px;aspect-ratio:1/1;background:rgba(255,255,255,.05);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;overflow:hidden}
.footer-qr img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius)}
.footer-qr-name{font-size:.7rem;color:rgba(255,255,255,.85);margin-top:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:16px 0;
  display:flex;justify-content:space-between;align-items:center;font-size:.78rem;flex-wrap:wrap;gap:10px;
}
.footer-bottom a{color:var(--accent-light)}

/* ===== Back to Top ===== */
.back-top{
  position:fixed;bottom:30px;right:30px;width:48px;height:48px;
  background:var(--primary);color:#fff;border-radius:50%;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  opacity:0;visibility:hidden;transition:var(--transition);z-index:999;
  box-shadow:0 4px 15px rgba(12,95,168,.4);font-size:1.2rem;border:none;
}
.back-top.visible{opacity:1;visibility:visible}
.back-top:hover{background:var(--primary-dark);transform:translateY(-4px)}

/* ===== Floating Contact ===== */
.float-contact{
  position:fixed;right:30px;bottom:90px;z-index:999;display:flex;flex-direction:column;gap:10px;
}
.float-contact .float-btn{
  width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:var(--transition);font-size:1.2rem;color:#fff;box-shadow:0 4px 15px rgba(0,0,0,.15);
}
.float-contact .float-btn.phone{background:var(--primary)}
.float-contact .float-btn.wechat{background:#07c160}
.float-contact .float-btn:hover{transform:scale(1.1)}
.float-contact .float-btn .tooltip{
  position:absolute;right:58px;top:50%;transform:translateY(-50%);
  background:var(--dark);color:#fff;padding:6px 14px;border-radius:6px;font-size:.8rem;
  white-space:nowrap;opacity:0;visibility:hidden;transition:var(--transition);
}
.float-contact .float-btn:hover .tooltip{opacity:1;visibility:visible}

/* ===== Admin Panel ===== */
.admin-body{background:var(--bg)}
.admin-header{background:var(--dark);color:#fff;padding:0 24px;display:flex;justify-content:space-between;align-items:center;height:60px}
.admin-header .logo-text{color:#fff}
.admin-layout{display:flex;min-height:calc(100vh - 60px)}
.admin-sidebar{width:220px;background:#1b2838;color:rgba(255,255,255,.7);padding:20px 0;flex-shrink:0}
.admin-sidebar .menu-item{padding:12px 24px;cursor:pointer;font-size:.9rem;transition:var(--transition);border-left:3px solid transparent}
.admin-sidebar .menu-item:hover,.admin-sidebar .menu-item.active{background:rgba(255,255,255,.05);color:#fff;border-left-color:var(--accent)}
.admin-content{flex:1;padding:24px;overflow-y:auto}
.admin-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);margin-bottom:20px}
.admin-card h3{font-size:1.1rem;margin-bottom:16px;color:var(--dark)}
.admin-table{width:100%;border-collapse:collapse}
.admin-table th{background:var(--bg);padding:12px;text-align:left;font-size:.85rem;color:var(--text-light)}
.admin-table td{padding:12px;border-bottom:1px solid var(--border);font-size:.88rem}
.admin-btn{padding:6px 14px;border-radius:6px;font-size:.8rem;cursor:pointer;border:none;transition:var(--transition)}
.admin-btn-edit{background:rgba(12,95,168,.1);color:var(--primary)}
.admin-btn-edit:hover{background:var(--primary);color:#fff}
.admin-btn-del{background:rgba(220,53,69,.1);color:#dc3545}
.admin-btn-del:hover{background:#dc3545;color:#fff}
.admin-btn-save{background:var(--primary);color:#fff;padding:10px 28px}
.admin-form-group{margin-bottom:16px}
.admin-form-group label{display:block;font-size:.85rem;color:var(--text-light);margin-bottom:6px}
.admin-form-group input,.admin-form-group textarea,.admin-form-group select{
  width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:6px;font-size:.88rem;font-family:inherit;
}
.admin-form-group input:focus,.admin-form-group textarea:focus,.admin-form-group select:focus{outline:none;border-color:var(--primary)}
.admin-modal{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none;align-items:center;justify-content:center;z-index:2000}
.admin-modal.show{display:flex}
.admin-modal-content{background:#fff;border-radius:var(--radius-lg);padding:30px;max-width:600px;width:90%;max-height:80vh;overflow-y:auto}
.admin-modal-content h3{margin-bottom:20px}

/* ===== Pagination ===== */
.pagination{display:flex;justify-content:center;gap:6px;margin-top:30px}
.pagination a,.pagination span{
  padding:8px 14px;border:1px solid var(--border);border-radius:6px;font-size:.85rem;cursor:pointer;
  transition:var(--transition);
}
.pagination a:hover,.pagination .active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ===== Responsive ===== */
@media(max-width:992px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:none}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid rgba(255,255,255,.15);padding-bottom:20px}
  .about-section,.contact-section{grid-template-columns:1fr;gap:30px}
  .news-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
  .footer-col-contact{grid-column:1 / -1;max-width:none}
  .footer-qr-grid{max-width:none;grid-template-columns:repeat(auto-fit,minmax(80px,120px));justify-content:start}
  .hero-content h1{font-size:2rem}
}
@media(max-width:768px){
  .nav-toggle{display:block}
  .nav-menu{
    position:fixed;top:72px;left:0;width:100%;background:#fff;
    flex-direction:column;align-items:flex-start;padding:0;
    box-shadow:0 4px 20px rgba(0,0,0,.1);
    max-height:0;overflow:hidden;transition:max-height .3s ease;
  }
  .nav-menu.open{max-height:1000px;padding:10px 0}
  .nav-menu>li{width:100%}
  .nav-menu>li>a{line-height:48px;padding:0 24px;width:100%}
  .nav-dropdown{position:static;transform:none;box-shadow:none;display:none;width:100%;padding-left:24px;pointer-events:auto}
  .nav-menu>li:hover .nav-dropdown,.nav-menu.open .nav-dropdown,.nav-dropdown.open{display:block;opacity:1;visibility:visible;transform:none}
  .section{padding:50px 0}
  .section-title{font-size:1.5rem}
  .hero{height:420px}
  .hero-content{padding:0;max-width:100%;margin:0}
  .hero-content h1{font-size:1.55rem}
  .hero-content p{font-size:.9rem}
  .hero-buttons{flex-direction:column}
  .hero-buttons .btn{width:100%;justify-content:center}
  .stats-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-qr-grid{max-width:none;grid-template-columns:repeat(auto-fit,minmax(80px,110px));justify-content:center}
  .footer-bottom{flex-direction:column;text-align:center}
  .top-bar .container{justify-content:center;text-align:center}
  .top-bar .top-links{display:none}
  .process-flow{flex-direction:column;align-items:center}
  .process-arrow{display:none}
  .process-step{max-width:100%;width:100%}
  .admin-sidebar{display:none}
  .admin-layout{display:block}
}
@media(max-width:480px){
  .stats-grid{grid-template-columns:1fr}
  .stat-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.15);padding-bottom:16px}
  .stat-item:last-child{border-bottom:none}
  .about-features{grid-template-columns:1fr}
  .hero-content h1{font-size:1.4rem}
}

/* ===== Alerts ===== */
.alert{padding:14px 18px;border-radius:var(--radius);font-size:.9rem;margin-bottom:16px}
.alert-success{background:#d4edda;color:#155724;border:1px solid #c3e6cb}
.alert-error{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}

/* ===== Utility ===== */
.text-center{text-align:center}
.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}
.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}

/* ===== Form Field Error (前端校验提示) ===== */
.error-msg{
  color:#dc3545;
  font-size:.82rem;
  margin-top:6px;
  padding-left:2px;
  display:flex;
  align-items:center;
  gap:4px;
}
.error-msg::before{
  content:"\f071";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:.78rem;
}
input.input-error,
textarea.input-error{
  border-color:#dc3545 !important;
  box-shadow:0 0 0 3px rgba(220,53,69,.12);
}

/* ===== 档案咨询卡片 ===== */
.consult-grid{grid-template-columns:repeat(2,1fr)}
.consult-grid .card-body{padding:28px}
.consult-grid .card-body h3{font-size:1.1rem;margin-bottom:16px;display:flex;align-items:center}
.service-list{list-style:none;margin:0;padding:0}
.service-list li{padding:8px 0 8px 22px;position:relative;color:var(--text-light);font-size:.88rem;line-height:1.6;border-bottom:1px dashed var(--border)}
.service-list li:last-child{border-bottom:none}
.service-list li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:10px;color:var(--accent);font-size:.75rem}
@media(max-width:768px){
  .consult-grid{grid-template-columns:1fr}
  .consult-grid .card-body{padding:22px}
}

/* ============================================================
   3.0 布局重构（首页 / 关于我们 / 产品与服务 / 政策法规）
   说明：以下规则通过更高的书写顺序覆盖 .service-cards /
   .card-grid / .cat-grid 的默认 auto 排列，实现固定行列布局，
   并保留窄屏逐级回退，避免板块被压扁。
   ============================================================ */

/* ---- 首页 & 产品与服务 顶部「五大业务板块」：上二下三 ---- */
.service-cards-5{display:flex;flex-direction:column;gap:24px}
.service-row{display:grid;gap:24px}
.service-row-2{grid-template-columns:repeat(2,1fr)}
.service-row-3{grid-template-columns:repeat(3,1fr)}

/* ---- 关于我们·核心能力(6)：上三下三 ---- */
.capability-grid{grid-template-columns:repeat(3,1fr)}

/* ---- 关于我们·服务领域(8)：上四下四 ---- */
.fields-grid{grid-template-columns:repeat(4,1fr)}

/* ---- 关于我们·组织架构(11)：4+4+3 均衡排布 ---- */
.org-grid{grid-template-columns:repeat(4,1fr)}

/* ---- 关于我们·资质证书：可变动自适应排版 ----
   使用 auto-fit + 较小 min，后续在后台新增证书时自动重排，
   不会出现孤行或被拉伸变形的不合理排列 */
.cert-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}

/* ---- 产品与服务·数据加工(7)：4+3 ---- */
.data-grid{grid-template-columns:repeat(4,1fr)}

/* ---- 产品中心·软件/硬件产品：3 列整洁排版 ---- */
#product-tabs .card-grid{grid-template-columns:repeat(3,1fr)}

/* ---- 政策法规·标准类板块：响应式（替代内联 1fr 1fr）---- */
.policy-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}

/* ---- 窄屏响应式回退 ---- */
@media(max-width:992px){
  .fields-grid{grid-template-columns:repeat(3,1fr)}   /* 8 -> 3+3+2 */
  .org-grid{grid-template-columns:repeat(3,1fr)}      /* 11 -> 3+3+3+2 */
  .data-grid{grid-template-columns:repeat(2,1fr)}     /* 7 -> 2+2+2+1 */
  #product-tabs .card-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .service-row-3{grid-template-columns:repeat(2,1fr)} /* 3卡 -> 2+1 */
  .capability-grid{grid-template-columns:repeat(2,1fr)} /* 6 -> 2+2+2 */
  .fields-grid{grid-template-columns:repeat(2,1fr)}   /* 8 -> 2×4 */
  .org-grid{grid-template-columns:repeat(2,1fr)}      /* 11 -> 2×5+1 */
  .data-grid{grid-template-columns:repeat(2,1fr)}
  #product-tabs .card-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:560px){
  .service-row-2,
  .service-row-3,
  .capability-grid,
  .fields-grid,
  .org-grid,
  .data-grid,
  #product-tabs .card-grid{grid-template-columns:1fr}
}