/* =====================================================
   重庆盖丁科技 官网 - 蓝色科技感 · 简洁 · 响应式
   ===================================================== */
:root{
  --blue-900:#06122e;
  --blue-800:#0a1d4a;
  --blue-700:#0f2a6b;
  --blue-600:#12409c;
  --blue-500:#1e63ff;
  --blue-400:#3f8cff;
  --cyan:#38d8ff;
  --ink:#0c1b33;
  --gray-600:#5a6b85;
  --gray-500:#7a8aa3;
  --line:#e3ebf7;
  --bg:#f5f8fe;
  --white:#ffffff;
  --grad:linear-gradient(135deg,#0a1d4a 0%,#12409c 55%,#1e63ff 100%);
  --grad-light:linear-gradient(135deg,#eaf2ff 0%,#f5f8fe 100%);
  --shadow:0 8px 30px rgba(18,64,156,.10);
  --shadow-lg:0 16px 48px rgba(18,64,156,.18);
  --radius:14px;
  --font:'Microsoft YaHei','PingFang SC','Helvetica Neue',Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--blue-500);text-decoration:none;transition:color .2s}
a:hover{color:var(--blue-400)}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- 顶部导航 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 6px 24px rgba(18,64,156,.10)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand-logo{height:40px;width:auto}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:17px;letter-spacing:.5px}
.brand-text small{font-size:11px;color:var(--gray-500);letter-spacing:1.5px}
.site-nav{display:flex;gap:4px}
.site-nav a{padding:8px 14px;border-radius:8px;color:var(--gray-600);font-size:15px;font-weight:500}
.site-nav a:hover{color:var(--blue-500);background:#eef4ff}
.site-nav a.active{color:var(--white);background:var(--grad)}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--blue-700);margin:5px 0;border-radius:2px;transition:.3s}

/* ---------- 通用版块 ---------- */
.section{padding:80px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 50px}
.section-head .tag{display:inline-block;font-size:13px;color:var(--blue-500);background:#eaf1ff;padding:4px 14px;border-radius:20px;letter-spacing:1px;margin-bottom:14px;font-weight:600}
.section-head h2{font-size:32px;font-weight:700;letter-spacing:.5px}
.section-head p{color:var(--gray-600);margin-top:10px;font-size:16px}
.page-banner{padding:150px 0 60px;background:var(--grad);color:#fff;position:relative;overflow:hidden}
.page-banner::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(56,216,255,.25),transparent 45%),radial-gradient(circle at 10% 90%,rgba(63,140,255,.3),transparent 40%)}
.page-banner h1{position:relative;font-size:36px;font-weight:700}
.page-banner p{position:relative;color:#cfe0ff;margin-top:8px;font-size:16px}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;background:radial-gradient(ellipse at 70% 20%,rgba(30,99,255,.35),transparent 55%),radial-gradient(ellipse at 10% 85%,rgba(56,216,255,.18),transparent 45%),linear-gradient(160deg,#050f26 0%,#0a1d4a 55%,#0e2c6b 100%);color:#fff;overflow:hidden}
.hero-canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.85}
.hero-inner{position:relative;z-index:2;padding:140px 0 90px;max-width:860px}
.hero .kicker{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--cyan);border:1px solid rgba(56,216,255,.4);background:rgba(56,216,255,.08);padding:6px 16px;border-radius:30px;letter-spacing:1px;margin-bottom:22px}
.hero h1{font-size:52px;line-height:1.25;font-weight:800;letter-spacing:1px;background:linear-gradient(90deg,#fff,#9cc2ff 60%,#38d8ff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero h1 em{font-style:normal}
.hero .sub{margin:22px 0 34px;font-size:18px;color:#b8cdf2;max-width:640px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,#1e63ff,#3f8cff);color:#fff;box-shadow:0 10px 30px rgba(30,99,255,.4)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.btn-light{background:#fff;color:var(--blue-700)}
.hero-stats{position:relative;z-index:2;display:flex;gap:48px;flex-wrap:wrap;margin-top:56px;padding-top:36px;border-top:1px solid rgba(255,255,255,.14)}
.hero-stats .stat b{font-size:30px;font-weight:800;color:#fff}
.hero-stats .stat b i{color:var(--cyan);font-style:normal}
.hero-stats .stat span{display:block;font-size:13px;color:#8fa8d8;margin-top:4px}

/* ---------- 首页：六大系统 ---------- */
.systems-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.sys-card{background:#fff;border-radius:var(--radius);padding:32px 28px;border:1px solid var(--line);transition:transform .25s,box-shadow .25s;position:relative;overflow:hidden}
.sys-card::after{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.sys-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.sys-card:hover::after{transform:scaleX(1)}
.sys-icon{width:60px;height:60px;border-radius:14px;background:var(--grad-light);display:flex;align-items:center;justify-content:center;margin-bottom:18px;border:1px solid #dce9ff}
.sys-icon svg{width:34px;height:34px;stroke:var(--blue-500)}
.sys-card h3{font-size:18px;margin-bottom:4px}
.sys-card .en{font-size:12px;color:var(--blue-400);letter-spacing:1px;margin-bottom:12px;font-weight:600}
.sys-card p{color:var(--gray-600);font-size:14px}
.sys-card .more{display:inline-block;margin-top:16px;font-size:14px;font-weight:600}

/* ---------- 服务模式 ---------- */
.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.svc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;text-align:center;transition:.25s}
.svc-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.svc-num{font-size:40px;font-weight:800;background:linear-gradient(135deg,var(--blue-500),var(--cyan));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.svc-card h3{font-size:17px;margin:10px 0 8px}
.svc-card p{font-size:13.5px;color:var(--gray-600)}

/* ---------- 首页：中标数据 ---------- */
.bid-section{background:linear-gradient(180deg,#fff 0%,#f0f6ff 100%)}
.bid-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:36px}
.bid-stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;text-align:center}
.bid-stat b{font-size:28px;color:var(--blue-500);font-weight:800}
.bid-stat span{font-size:13px;color:var(--gray-600);display:block;margin-top:4px}
.bid-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.bid-item{display:flex;align-items:center;gap:18px;padding:18px 24px;border-bottom:1px solid var(--line);transition:background .2s}
.bid-item:last-child{border-bottom:none}
.bid-item:hover{background:#f7faff}
.bid-tag{flex:0 0 auto;font-size:12px;color:#fff;background:var(--blue-500);border-radius:6px;padding:3px 10px;font-weight:600;white-space:nowrap}
.bid-item .bd-title{flex:1;min-width:0;font-size:15px;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bid-item .bd-meta{flex:0 0 auto;font-size:13px;color:var(--gray-500);text-align:right}
.bid-item .bd-meta b{color:var(--blue-600);font-size:14px}
.text-center{text-align:center}
.mt-36{margin-top:36px}

/* ---------- 新闻卡片 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.25s}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.news-card .nc-cover{height:170px;overflow:hidden;background:var(--grad-light)}
.news-card .nc-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-card:hover .nc-cover img{transform:scale(1.06)}
.news-card .nc-body{padding:20px 22px;flex:1;display:flex;flex-direction:column}
.news-card .nc-meta{font-size:12.5px;color:var(--gray-500);margin-bottom:8px}
.news-card .nc-meta .cat{color:var(--blue-500);font-weight:600;margin-right:10px}
.news-card h3{font-size:16.5px;line-height:1.5;margin-bottom:8px}
.news-card h3 a{color:var(--ink)}
.news-card h3 a:hover{color:var(--blue-500)}
.news-card p{font-size:13.5px;color:var(--gray-600);flex:1}
.news-card .nc-foot{font-size:12.5px;color:var(--gray-500);margin-top:14px;display:flex;justify-content:space-between}

/* ---------- 通用列表页 ---------- */
.list-page{padding:40px 0 80px}
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.chip{padding:7px 16px;border-radius:20px;font-size:14px;background:#fff;border:1px solid var(--line);color:var(--gray-600);cursor:pointer}
.chip.active,.chip:hover{background:var(--blue-500);color:#fff;border-color:var(--blue-500)}
.article-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 24px;margin-bottom:16px;transition:.2s}
.article-item:hover{box-shadow:var(--shadow);transform:translateX(4px)}
.article-item h3{font-size:17px;margin-bottom:6px}
.article-item h3 a{color:var(--ink)}
.article-item p{font-size:14px;color:var(--gray-600)}
.article-item .ai-meta{font-size:12.5px;color:var(--gray-500);margin-top:10px;display:flex;gap:16px;flex-wrap:wrap}

/* 分页 */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:36px}
.pagination a,.pagination span{min-width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;background:#fff;border:1px solid var(--line);color:var(--gray-600);font-size:14px}
.pagination a:hover{border-color:var(--blue-500);color:var(--blue-500)}
.pagination .cur{background:var(--blue-500);color:#fff;border-color:var(--blue-500)}

/* ---------- 详情页 ---------- */
.detail-wrap{max-width:860px;margin:0 auto}
.detail-head{margin-bottom:28px}
.detail-head .dh-meta{font-size:13px;color:var(--gray-500);display:flex;gap:18px;flex-wrap:wrap;margin-top:10px}
.detail-head h1{font-size:28px;line-height:1.5;font-weight:700}
.detail-body{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:38px 40px}
.detail-body h1,.detail-body h2,.detail-body h3{margin:22px 0 12px;line-height:1.4}
.detail-body h2{font-size:22px;color:var(--blue-700)}
.detail-body h3{font-size:18px;color:var(--blue-700)}
.detail-body p{margin-bottom:16px;font-size:15.5px;color:#33415e}
.detail-body ul{padding-left:22px;margin-bottom:16px}
.detail-body li{margin-bottom:8px;color:#33415e}
.detail-body a{color:var(--blue-500);word-break:break-all}
.detail-body img{border-radius:10px;margin:12px 0}

/* ---------- 关于我们 ---------- */
.about-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.about-hero h2{font-size:30px;margin-bottom:18px;line-height:1.4}
.about-hero h2 b{background:linear-gradient(135deg,var(--blue-500),var(--cyan));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.about-hero p{color:var(--gray-600);margin-bottom:14px}
.about-visual{position:relative}
.about-visual .av-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.about-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:60px}
.ab-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 22px;text-align:center}
.ab-card .ab-ico{width:52px;height:52px;margin:0 auto 14px;border-radius:12px;background:var(--grad-light);display:flex;align-items:center;justify-content:center}
.ab-card .ab-ico svg{width:28px;height:28px;stroke:var(--blue-500)}
.ab-card b{display:block;font-size:16px;margin-bottom:6px}
.ab-card p{font-size:13px;color:var(--gray-600)}
.timeline{max-width:760px;margin:0 auto;position:relative;padding-left:30px}
.timeline::before{content:'';position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--blue-500),var(--cyan))}
.tl-item{position:relative;padding:0 0 34px 22px}
.tl-item::before{content:'';position:absolute;left:-28px;top:6px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--blue-500)}
.tl-item b{font-size:16px;color:var(--blue-700)}
.tl-item p{color:var(--gray-600);font-size:14px;margin-top:4px}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info .ci-item{display:flex;gap:16px;margin-bottom:22px}
.ci-ico{flex:0 0 auto;width:46px;height:46px;border-radius:12px;background:var(--grad-light);display:flex;align-items:center;justify-content:center}
.ci-ico svg{width:22px;height:22px;stroke:var(--blue-500)}
.ci-item b{display:block;font-size:15px}
.ci-item p{color:var(--gray-600);font-size:14px;margin-top:2px}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:var(--ink)}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:9px;font-size:15px;font-family:inherit;background:#fbfdff;transition:border .2s,box-shadow .2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--blue-500);box-shadow:0 0 0 3px rgba(30,99,255,.12);background:#fff}
.form-group textarea{min-height:120px;resize:vertical}
.form-tip{font-size:13px;color:#2e8b57;margin-top:8px}

/* ---------- 解决方案详情 ---------- */
.sys-detail-hero{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:150px 0 70px}
.sys-detail-hero h1{font-size:36px;margin-bottom:10px}
.sys-detail-hero .en{color:var(--blue-400);letter-spacing:2px;font-weight:600;font-size:14px}
.sys-detail-hero p{color:#cfe0ff;margin-top:16px;font-size:16px}
.sys-visual{position:relative}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px}
.feat-card .fk{width:44px;height:44px;border-radius:10px;background:var(--grad-light);display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-weight:800;color:var(--blue-500);font-size:18px}
.feat-card h4{font-size:16px;margin-bottom:8px}
.feat-card p{font-size:13.5px;color:var(--gray-600)}
.scope-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:820px;margin:0 auto}
.scope-list li{background:#fff;border:1px solid var(--line);border-left:3px solid var(--blue-500);border-radius:8px;padding:14px 18px;list-style:none;font-size:14.5px;color:#33415e}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--blue-900);color:#a9bfe8;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.2fr 1.2fr;gap:36px;padding:60px 0 40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;color:#fff}
.footer-brand img{height:38px;width:auto}
.footer-brand b{font-size:17px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;position:relative;padding-bottom:8px}
.footer-col h4::after{content:'';position:absolute;left:0;bottom:0;width:26px;height:2px;background:var(--blue-400);border-radius:2px}
.footer-col a{display:block;color:#a9bfe8;font-size:14px;margin-bottom:10px}
.footer-col a:hover{color:var(--cyan)}
.footer-col p{font-size:14px;margin-bottom:10px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.5px;color:#7e95c2}
.footer-bottom a{color:#a9bfe8}

/* ---------- 动画 ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
.fade-up{opacity:0}
.fade-up.in{animation:fadeUp .7s ease forwards}
.d1{animation-delay:.05s}.d2{animation-delay:.12s}.d3{animation-delay:.19s}
.d4{animation-delay:.26s}.d5{animation-delay:.33s}.d6{animation-delay:.40s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.floaty{animation:floaty 5s ease-in-out infinite}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .systems-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .services-grid,.bid-stats,.about-cards{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  body{font-size:15px}
  .section{padding:56px 0}
  .section-head h2{font-size:26px}
  .page-banner{padding:120px 0 44px}
  .page-banner h1{font-size:28px}
  /* 移动端导航 */
  .nav-toggle{display:block}
  .site-nav{position:fixed;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:12px 20px 20px;gap:4px;box-shadow:0 20px 40px rgba(18,64,156,.12);transform:translateY(-130%);transition:transform .3s;border-bottom:1px solid var(--line)}
  .site-nav.open{transform:none}
  .site-nav a{padding:12px 14px;border-radius:8px}
  /* Hero */
  .hero h1{font-size:34px}
  .hero .sub{font-size:16px}
  .hero-inner{padding:120px 0 60px}
  .hero-stats{gap:28px}
  .hero-stats .stat b{font-size:24px}
  .systems-grid,.news-grid,.services-grid,.bid-stats,.about-cards{grid-template-columns:1fr}
  .about-hero,.sys-detail-hero,.contact-grid{grid-template-columns:1fr}
  .about-hero{padding:120px 0 20px}
  .sys-detail-hero{padding:120px 0 40px}
  .feat-grid{grid-template-columns:1fr}
  .scope-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:44px 0 30px}
  .footer-bottom{flex-direction:column;text-align:center}
  .bid-item{flex-direction:column;align-items:flex-start;gap:6px}
  .bid-item .bd-meta{text-align:left}
  .detail-body{padding:26px 22px}
  .detail-head h1{font-size:22px}
  .form-row{grid-template-columns:1fr}
}

/* ---------- 中标条目可点击 / 中标详情表 ---------- */
.bid-item{color:inherit}
.bid-item .bd-arrow{flex:0 0 auto;color:var(--gray-500);font-size:20px;line-height:1;font-weight:700;transition:transform .2s,color .2s}
.bid-item:hover .bd-arrow{color:var(--blue-500);transform:translateX(3px)}
.bid-detail-table{width:100%;border-collapse:collapse;font-size:15px}
.bid-detail-table th,.bid-detail-table td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.bid-detail-table th{background:#f2f7ff;color:var(--blue-700);width:130px;font-weight:600;white-space:nowrap}
@media (max-width:768px){.bid-detail-table th{width:96px;padding:10px 10px;font-size:14px}.bid-detail-table td{padding:10px 10px;font-size:14px}}