/* ==========================================================================
   蓉初星元 · 全新官网样式 v2.0
   设计主题：深空蓝紫 × 科技光效
   ========================================================================== */

/* --- 基础变量 --- */
:root{
  --bg-deep:#0a1228;
  --bg-mid:#0e1a3a;
  --bg-soft:#111c44;
  --primary:#3b82f6;
  --primary-light:#60a5fa;
  --accent:#7c3aed;
  --accent-2:#22d3ee;
  --text:#0f172a;
  --text-2:#475569;
  --text-3:#94a3b8;
  --border:#e2e8f0;
  --border-2:#eef2f7;
  --bg-page:#f7f9fd;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow:0 6px 18px rgba(15,23,42,.08);
  --shadow-lg:0 20px 50px rgba(15,23,42,.12);
  --radius-sm:8px;
  --radius:14px;
  --radius-lg:22px;
  --grad-primary:linear-gradient(135deg,#3b82f6 0%,#7c3aed 100%);
  --grad-accent:linear-gradient(135deg,#22d3ee 0%,#3b82f6 100%);
  --grad-dark:linear-gradient(135deg,#0a1228 0%,#1e3a8a 100%);
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif;
  color:var(--text);
  background:var(--bg-page);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  font-size:16px;
}
a{color:inherit;text-decoration:none;transition:all .25s ease}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button,input,textarea,select{font:inherit;outline:none;border:none;background:none;color:inherit}
button{cursor:pointer}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
.clearfix::after{content:"";display:block;clear:both}
.text-center{text-align:center}

/* ============== 顶部导航 ============== */
.site-top{
  background:rgba(10,18,40,.92);
  backdrop-filter:saturate(180%) blur(10px);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  color:#cbd5e1;
  font-size:13px;
  border-bottom:1px solid rgba(255,255,255,.05);
}
.site-top .container{display:flex;justify-content:space-between;align-items:center;height:36px}
.site-top a{color:#cbd5e1}
.site-top a:hover{color:var(--accent-2)}
.site-top ul{display:flex;gap:18px}

.header-bar{
  background:#fff;
  position:sticky;top:0;z-index:100;
  box-shadow:0 2px 14px rgba(15,23,42,.06);
}
.header-bar .container{display:flex;align-items:center;justify-content:space-between;height:80px;gap:24px}
.site-logo{display:flex;align-items:center;color:var(--bg-deep);transition:opacity .2s ease}
.site-logo:hover{opacity:.85}
.site-logo img{height:46px;width:auto;display:block}

.main-nav ul{display:flex;gap:6px}
.main-nav a{
  display:block;padding:10px 18px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:500;color:var(--text);position:relative;
}
.main-nav a:hover{color:var(--primary);background:#eff6ff}
.main-nav a.active{color:var(--primary);background:#eff6ff}
.main-nav a.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:24px;height:3px;border-radius:2px;background:var(--grad-primary);
}
.nav-toggle{display:none;background:none;font-size:24px;color:var(--bg-deep)}

.header-cta{display:flex;align-items:center;gap:14px}
.header-cta .phone{
  display:flex;align-items:center;gap:8px;
  font-size:18px;font-weight:700;color:var(--bg-deep);
}
.header-cta .phone::before{
  content:"";width:28px;height:28px;border-radius:50%;
  background:var(--grad-primary);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'><path d='M20 15.5c-1.25 0-2.45-.2-3.57-.57-.35-.11-.74-.03-1.02.24l-2.2 2.2c-2.83-1.44-5.15-3.75-6.59-6.58l2.2-2.21c.28-.27.36-.66.25-1.01C8.7 6.45 8.5 5.25 8.5 4c0-.55-.45-1-1-1H4c-.55 0-1 .45-1 1 0 9.39 7.61 17 17 17 .55 0 1-.45 1-1v-3.5c0-.55-.45-1-1-1z'/></svg>");
  background-size:16px;background-repeat:no-repeat;background-position:center;
}
.btn-primary{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 22px;border-radius:99px;
  background:var(--grad-primary);color:#fff!important;font-weight:600;font-size:14px;
  box-shadow:0 6px 18px rgba(59,130,246,.35);
  transition:transform .25s ease,box-shadow .25s ease;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(59,130,246,.5)}

/* ============== Hero Banner ============== */
.hero{
  position:relative;height:560px;overflow:hidden;
  background:#0a1228;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url('banner-new.png') center/cover no-repeat;
  filter:saturate(1.05);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,18,40,.92) 0%,rgba(10,18,40,.55) 45%,rgba(10,18,40,.15) 100%);
}
.hero-inner{
  position:relative;z-index:2;height:100%;
  display:flex;align-items:center;
}
.hero-content{max-width:680px;color:#fff}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:99px;
  background:rgba(34,211,238,.15);color:var(--accent-2);
  font-size:13px;font-weight:500;border:1px solid rgba(34,211,238,.3);
  margin-bottom:24px;
}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 8px var(--accent-2)}
.hero-title{
  font-size:48px;font-weight:700;line-height:1.18;letter-spacing:1px;
  margin-bottom:18px;
}
.hero-title .grad{
  background:linear-gradient(135deg,#22d3ee 0%,#60a5fa 50%,#a78bfa 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:18px;color:#cbd5e1;margin-bottom:36px;line-height:1.7}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn-hero{
  padding:14px 32px;border-radius:99px;font-weight:600;font-size:15px;
  display:inline-flex;align-items:center;gap:8px;
}
.btn-hero-primary{
  background:#fff;color:var(--bg-deep);
  box-shadow:0 10px 30px rgba(0,0,0,.2);
}
.btn-hero-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(0,0,0,.3)}
.btn-hero-ghost{
  background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.3);
  backdrop-filter:blur(6px);
}
.btn-hero-ghost:hover{background:rgba(255,255,255,.18)}

.hero-stats{
  position:absolute;right:6%;bottom:8%;z-index:2;
  display:flex;gap:24px;color:#fff;
}
.hero-stat{
  background:rgba(255,255,255,.08);backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.15);
  border-radius:var(--radius);padding:16px 22px;min-width:120px;
}
.hero-stat .num{font-size:28px;font-weight:700;background:linear-gradient(135deg,#22d3ee,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stat .lbl{font-size:12px;color:#cbd5e1;margin-top:4px}

/* ============== 通用区块 ============== */
.section{padding:88px 0}
.section-tight{padding:60px 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 56px}
.section-eyebrow{
  display:inline-block;font-size:13px;font-weight:600;
  color:var(--primary);letter-spacing:2px;text-transform:uppercase;margin-bottom:14px;
}
.section-title{
  font-size:36px;font-weight:700;color:var(--bg-deep);line-height:1.3;margin-bottom:14px;
}
.section-desc{font-size:16px;color:var(--text-2);line-height:1.7}
.section-title .grad{
  background:var(--grad-primary);-webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ============== 服务板块 ============== */
.services{background:#fff}
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.svc-card{
  position:relative;padding:34px 26px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--border-2);
  transition:all .35s ease;cursor:pointer;overflow:hidden;
}
.svc-card::before{
  content:"";position:absolute;inset:0;border-radius:var(--radius);
  background:var(--grad-primary);opacity:0;transition:opacity .35s ease;z-index:0;
}
.svc-card > *{position:relative;z-index:1;transition:color .35s ease}
.svc-card .ico{
  width:56px;height:56px;border-radius:14px;
  background:linear-gradient(135deg,#eff6ff,#ede9fe);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;color:var(--primary);font-size:26px;
  transition:all .35s ease;
}
.svc-card h3{font-size:18px;font-weight:700;color:var(--bg-deep);margin-bottom:10px}
.svc-card p{font-size:14px;color:var(--text-2);line-height:1.7;min-height:72px}
.svc-card .more{
  display:inline-flex;align-items:center;gap:4px;margin-top:14px;
  font-size:13px;font-weight:600;color:var(--primary);
}
.svc-card:hover{
  transform:translateY(-6px);
  box-shadow:0 20px 40px rgba(59,130,246,.18);
  border-color:transparent;
}
.svc-card:hover::before{opacity:1}
.svc-card:hover h3,.svc-card:hover p,.svc-card:hover .more{color:#fff}
.svc-card:hover .more{color:#22d3ee}
.svc-card:hover .ico{
  background:rgba(255,255,255,.2);color:#fff;transform:scale(1.1) rotate(-5deg);
}

/* ============== 关于我们 ============== */
.about{background:var(--bg-page)}
.about-text{max-width:960px;margin:0 auto}
.about-text h2{font-size:32px;color:var(--bg-deep);font-weight:700;margin-bottom:16px;line-height:1.3;text-align:center}
.about-text h2 .grad{background:var(--grad-primary);-webkit-background-clip:text;background-clip:text;color:transparent}
.about-text p{color:var(--text-2);font-size:15px;line-height:1.8;margin-bottom:14px}
.about-features{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:24px}
.about-feat{
  display:flex;align-items:flex-start;gap:10px;padding:14px;border-radius:var(--radius-sm);
  background:#fff;border:1px solid var(--border-2);
}
.about-feat .check{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  background:var(--grad-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
}
.about-feat .name{font-size:14px;font-weight:600;color:var(--bg-deep);line-height:1.5}

/* ============== 解决方案 ============== */
.solutions{background:#fff}
.sol-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.sol-card{
  background:#fff;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--border-2);
  transition:all .35s ease;cursor:pointer;
  display:flex;flex-direction:column;
}
.sol-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.sol-card .thumb{
  aspect-ratio:16/10;background:#f1f5f9;overflow:hidden;position:relative;
}
.sol-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.sol-card:hover .thumb img{transform:scale(1.08)}
.sol-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(15,23,42,.4) 100%);
}
.sol-card .thumb .tag{
  position:absolute;left:12px;top:12px;z-index:2;
  padding:4px 10px;border-radius:99px;background:rgba(255,255,255,.92);
  color:var(--primary);font-size:12px;font-weight:600;
}
.sol-card .body{padding:18px 18px 22px;flex:1;display:flex;flex-direction:column}
.sol-card h3{font-size:16px;font-weight:700;color:var(--bg-deep);margin-bottom:8px;line-height:1.4}
.sol-card p{font-size:13px;color:var(--text-2);line-height:1.7;flex:1}

/* ============== 文章/资讯 ============== */
.articles{background:var(--bg-page)}
.art-grid{display:grid;grid-template-columns:2fr 1fr;gap:30px}
.art-main{background:#fff;border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm)}
.art-main h3{font-size:22px;color:var(--bg-deep);font-weight:700;margin-bottom:20px;display:flex;align-items:center;gap:10px}
.art-main h3::before{content:"";width:4px;height:22px;background:var(--grad-primary);border-radius:2px}
.art-list{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.art-item{padding:16px;border-radius:var(--radius-sm);border:1px solid var(--border-2);transition:all .25s ease}
.art-item:hover{border-color:var(--primary);background:#fff;box-shadow:var(--shadow-sm)}
.art-item .date{font-size:12px;color:var(--text-3);margin-bottom:6px}
.art-item .title{font-size:15px;font-weight:600;color:var(--bg-deep);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.art-item:hover .title{color:var(--primary)}

.art-side{display:flex;flex-direction:column;gap:20px}
.art-tabs{
  background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);
  flex:1;
}
.tab-head{display:flex;border-bottom:1px solid var(--border);margin-bottom:18px}
.tab-head a{
  flex:1;text-align:center;padding:10px 0;font-size:14px;font-weight:600;
  color:var(--text-2);position:relative;transition:color .25s ease;
}
.tab-head a.active{color:var(--primary)}
.tab-head a.active::after{
  content:"";position:absolute;left:50%;bottom:-1px;transform:translateX(-50%);
  width:36px;height:3px;border-radius:2px;background:var(--grad-primary);
}
.tab-list li{padding:12px 0;border-bottom:1px dashed var(--border-2)}
.tab-list li:last-child{border-bottom:none}
.tab-list a{
  display:flex;gap:10px;font-size:14px;color:var(--text);line-height:1.6;
}
.tab-list a:hover{color:var(--primary)}
.tab-list .num{
  flex:0 0 24px;width:24px;height:24px;border-radius:6px;
  background:#f1f5f9;color:var(--text-2);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.tab-list li:nth-child(1) .num{background:#fee2e2;color:#dc2626}
.tab-list li:nth-child(2) .num{background:#fef3c7;color:#d97706}
.tab-list li:nth-child(3) .num{background:#dbeafe;color:#2563eb}

/* ============== 数据栏 ============== */
.stats-bar{
  background:var(--grad-dark);color:#fff;padding:60px 0;position:relative;overflow:hidden;
}
.stats-bar::before{
  content:"";position:absolute;top:-100px;right:-100px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,58,237,.4),transparent 70%);
}
.stats-bar::after{
  content:"";position:absolute;bottom:-100px;left:-100px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.3),transparent 70%);
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;position:relative;z-index:1;text-align:center}
.stat-num{font-size:44px;font-weight:700;background:linear-gradient(135deg,#22d3ee,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.stat-lbl{color:#cbd5e1;font-size:14px;margin-top:8px}

/* ============== 留言/联系 ============== */
.contact{background:#fff}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-info{
  background:var(--grad-dark);color:#fff;border-radius:var(--radius-lg);padding:50px 44px;
  position:relative;overflow:hidden;
}
.contact-info::before{
  content:"";position:absolute;top:-60px;right:-60px;width:200px;height:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.3),transparent 70%);
}
.contact-info h3{font-size:26px;font-weight:700;margin-bottom:8px;position:relative}
.contact-info .sub{color:#94a3b8;margin-bottom:36px;position:relative}
.ci-list{position:relative}
.ci-list li{display:flex;align-items:flex-start;gap:14px;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.ci-list li:last-child{border-bottom:none}
.ci-list .ico{
  flex:0 0 40px;width:40px;height:40px;border-radius:10px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.ci-list .lbl{font-size:12px;color:#94a3b8;margin-bottom:4px}
.ci-list .val{font-size:15px;color:#fff;font-weight:500}

.contact-form{
  background:#fff;border-radius:var(--radius-lg);padding:50px 44px;
  box-shadow:var(--shadow);border:1px solid var(--border-2);
}
.contact-form h3{font-size:26px;font-weight:700;color:var(--bg-deep);margin-bottom:8px}
.contact-form .sub{color:var(--text-2);margin-bottom:30px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.form-field{position:relative;margin-bottom:14px}
.form-field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px;font-weight:500}
.form-field label em{color:#ef4444;font-style:normal;margin-right:2px}
.form-field input,.form-field textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);
  border:1px solid var(--border);background:#fafbfc;
  transition:all .2s ease;font-size:14px;
}
.form-field input:focus,.form-field textarea:focus{
  border-color:var(--primary);background:#fff;
  box-shadow:0 0 0 3px rgba(59,130,246,.12);
}
.form-field textarea{resize:vertical;min-height:96px}
.btn-submit{
  width:100%;padding:14px;border-radius:var(--radius-sm);
  background:var(--grad-primary);color:#fff;font-weight:600;font-size:15px;
  transition:transform .2s ease,box-shadow .2s ease;
  box-shadow:0 8px 20px rgba(59,130,246,.3);
}
.btn-submit:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(59,130,246,.45)}

/* ============== 页脚 ============== */
.footer{
  background:#0a1228;color:#94a3b8;padding:60px 0 0;
}
.footer a{color:#cbd5e1}
.footer a:hover{color:var(--accent-2)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:50px}
.footer-grid-simple{grid-template-columns:2fr 1fr;gap:60px;padding-bottom:40px}
.footer h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-about .logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-about .logo img{height:36px}
.footer-about .name{font-size:18px;color:#fff;font-weight:700}
.footer-about p{font-size:13px;line-height:1.8;color:#94a3b8;margin-top:8px}
.footer ul li{padding:6px 0;font-size:13px}
.footer ul li a{display:flex;align-items:center;gap:6px}
.footer ul li a::before{content:"›";color:var(--accent-2);font-size:14px}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;padding:8px 0;font-size:13px;color:#94a3b8}
.footer-contact li .ico{
  flex:0 0 18px;width:18px;height:18px;margin-top:2px;
  display:flex;align-items:center;justify-content:center;color:var(--accent-2);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0;text-align:center;font-size:13px;color:#64748b;
}
.footer-bottom a{color:#94a3b8}
.footer-bottom a:hover{color:var(--accent-2)}

/* ============== 悬浮侧边栏 ============== */
.floating{
  position:fixed;right:20px;bottom:80px;z-index:99;
  display:flex;flex-direction:column;gap:10px;
}
.float-btn{
  width:52px;height:52px;border-radius:50%;
  background:#fff;box-shadow:0 8px 24px rgba(15,23,42,.12);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:20px;
  transition:transform .25s ease,color .25s ease;
  cursor:pointer;border:1px solid var(--border);
}
.float-btn:hover{transform:translateY(-3px);color:var(--accent)}
.float-btn.primary{background:var(--grad-primary);color:#fff;border:none}
.float-btn.primary:hover{box-shadow:0 12px 30px rgba(59,130,246,.45)}

/* ============== 响应式 ============== */
@media (max-width:1024px){
  .svc-grid,.sol-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  .art-grid{grid-template-columns:1fr}
  .art-list{grid-template-columns:repeat(2,1fr)}
  .hero-title{font-size:38px}
  .section-title{font-size:30px}
}
@media (max-width:768px){
  .site-top{display:none}
  .header-bar .container{height:64px;gap:12px}
  .site-logo img{height:40px}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;padding:14px 24px;box-shadow:var(--shadow);border-top:1px solid var(--border-2)}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;gap:0}
  .main-nav a{padding:12px 8px}
  .nav-toggle{display:block}
  .header-cta .phone{display:none}
  .hero{height:480px}
  .hero-title{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-stats{display:none}
  .svc-grid,.sol-grid,.stats-grid,.form-row,.about-features{grid-template-columns:1fr}
  .art-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:60px 0}
  .section-title{font-size:24px}
  .section-head{margin-bottom:36px}
  .container{padding:0 18px}
  .floating{right:12px;bottom:60px}
  .float-btn{width:44px;height:44px;font-size:18px}
}

/* ============== 入场动画 ============== */
.fade-up{opacity:0;transform:translateY(24px);transition:opacity .8s ease,transform .8s ease}
.fade-up.in{opacity:1;transform:translateY(0)}
.fade-up.delay-1{transition-delay:.1s}
.fade-up.delay-2{transition-delay:.2s}
.fade-up.delay-3{transition-delay:.3s}
.fade-up.delay-4{transition-delay:.4s}

@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.4);opacity:.6}}
@keyframes shine{0%{background-position:-200% 0}100%{background-position:200% 0}}