/* =========================================================
   龙腾飞 CRM —— 
   独立 CSS 文件，含完整响应式
   ========================================================= */

:root{
  --navy:#112164;
  --navy2:#1f3bb1;
  --cyan:#4ddffd;
  --ink:#1a2233;
  --gray:#5b6472;
  --gray-l:#8b94a3;
  --bg:#f5f7fb;
  --line:rgba(17,33,100,0.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,"Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.75;
}
a{color:var(--navy2);text-decoration:none}
a:hover{text-decoration:none}
img{max-width:100%;display:block}
.section-inner{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== TOP BAR ===== */
.topbar{background:var(--navy);color:rgba(255,255,255,0.85);font-size:13px;}
.topbar-inner{max-width:1200px;margin:0 auto;padding:8px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.topbar-left{display:flex;align-items:center;gap:10px;}
.tb-tag{background:var(--cyan);color:var(--navy);font-weight:700;padding:2px 10px;border-radius:6px;font-size:12px;}
.tb-tel{color:#fff;font-weight:700;margin-right:14px;}
.tb-qq{color:var(--navy);background:var(--cyan);padding:3px 12px;border-radius:6px;font-weight:600;}

/* ===== NAV ===== */
.nav{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,0.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .3s;}
.nav.scrolled{box-shadow:0 4px 24px rgba(17,33,100,0.10);}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;justify-content:space-between;}
.nav-brand{display:inline-flex;align-items:center;gap:10px;}
.nav-logo{height:40px;}
.nav-brand-text{font-size:21px;font-weight:900;color:var(--navy);display:flex;align-items:baseline;gap:8px;}
.nav-brand-desc{font-size:12px;color:var(--navy2);font-weight:700;}
.nav-menu{display:flex;gap:28px;}
.nav-menu a{font-size:15px;font-weight:500;color:var(--gray);transition:color .2s;position:relative;padding:6px 0;}
.nav-menu a:hover{color:var(--navy2);}
.nav-menu a::after{content:'';position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--cyan);transition:width .25s;}
.nav-menu a:hover::after{width:100%;}
.nav-cta{background:var(--navy2);color:#fff;font-size:14px;font-weight:600;padding:10px 22px;border-radius:8px;transition:background .2s;}
.nav-cta:hover{background:var(--navy);color:#fff;}
.nav-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--navy);}

/* ===== HERO ===== */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 100%);color:#fff;padding:88px 0 96px;}
.hero-bg{position:absolute;inset:0;background:
    radial-gradient(circle at 85% 20%,rgba(77,223,253,0.18) 0%,transparent 45%),
    radial-gradient(circle at 10% 90%,rgba(77,223,253,0.10) 0%,transparent 40%);pointer-events:none;}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr 0.95fr;gap:48px;align-items:center;}
.hero-tag{display:inline-block;font-size:13px;font-weight:700;color:var(--navy);background:var(--cyan);padding:5px 14px;border-radius:30px;margin-bottom:20px;letter-spacing:1px;}
.hero-text h1{font-size:46px;font-weight:900;line-height:1.25;margin-bottom:22px;}
.hero-text h1 em{font-style:normal;color:var(--cyan);}
.hero-sub{font-size:17px;color:rgba(255,255,255,0.78);line-height:1.9;margin-bottom:32px;max-width:560px;}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;}
.btn-primary{background:var(--cyan);color:var(--navy);font-size:16px;font-weight:700;padding:14px 32px;border-radius:10px;display:inline-flex;align-items:center;gap:8px;transition:all .2s;box-shadow:0 6px 20px rgba(77,223,253,0.3);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(77,223,253,0.45);color:var(--navy);}
.btn-secondary{background:rgba(255,255,255,0.1);color:#fff;font-size:16px;font-weight:600;padding:14px 32px;border-radius:10px;border:1px solid rgba(255,255,255,0.3);display:inline-flex;align-items:center;gap:8px;transition:all .2s;}
.btn-secondary:hover{background:rgba(255,255,255,0.18);color:#fff;}
.hero-visual{display:flex;justify-content:center;}
.hero-visual img{max-width:440px;filter:drop-shadow(0 20px 50px rgba(0,0,0,0.3));border-radius:14px;}

/* ===== STATS BAR ===== */
.stats-bar{background:var(--navy);border-top:1px solid rgba(255,255,255,0.08);}
.stats-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:40px 24px;}
.stat-item{text-align:center;}
.stat-num{font-size:44px;font-weight:900;color:var(--cyan);line-height:1.1;}
.stat-unit{font-size:18px;color:rgba(255,255,255,0.6);margin-left:2px;}
.stat-label{font-size:14px;color:rgba(255,255,255,0.6);margin-top:8px;}

/* ===== SECTION ===== */
.section{padding:84px 0;}
.section-alt{background:#fff;}
.section-dark{background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 100%);color:#fff;}
.section-head{max-width:760px;margin:0 auto 52px;text-align:center;}
.section-tag{display:inline-block;font-size:13px;font-weight:700;color:var(--navy2);letter-spacing:3px;text-transform:uppercase;margin-bottom:12px;}
.section-dark .section-tag{color:var(--cyan);}
.section-title{font-size:34px;font-weight:900;line-height:1.35;margin-bottom:16px;}
.section-dark .section-title{color:#fff;}
.section-desc{font-size:16px;color:var(--gray-l);line-height:1.9;}
.section-dark .section-desc{color:rgba(255,255,255,0.62);}

/* ===== CARD GRID ===== */
.card-grid{display:grid;gap:24px;}
.card-grid.three{grid-template-columns:repeat(3,1fr);}
.card-grid.two{grid-template-columns:repeat(2,1fr);}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px 28px;box-shadow:0 2px 14px rgba(17,33,100,0.04);transition:transform .25s,box-shadow .25s;border-top:3px solid transparent;}
.card:hover{transform:translateY(-6px);box-shadow:0 14px 36px rgba(17,33,100,0.12);border-top-color:var(--cyan);}
/*.card-ico{width:58px;height:58px;border-radius:14px;background:linear-gradient(135deg,var(--navy),var(--navy2));display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:18px;}*/
.card-ico{width:58px;height:58px;border-radius:14px;background:linear-gradient(135deg,#8392cf,#0064fb);display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:18px;}/*20260712*/
.card h3{font-size:20px;font-weight:700;margin-bottom:12px;color:var(--ink);}
.card p{font-size:14px;color:var(--gray-l);line-height:1.85;}

/* ===== PROCESS (dark) ===== */
.process-flow{display:flex;align-items:stretch;gap:16px;margin-top:40px;}
.process-step{flex:1;text-align:center;background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);border-radius:16px;padding:30px 18px;position:relative;transition:background .25s;}
.process-step:hover{background:rgba(77,223,253,0.1);}
.process-dot{width:60px;height:60px;border-radius:50%;background:var(--cyan);display:flex;align-items:center;justify-content:center;font-size:26px;margin:0 auto 16px;box-shadow:0 6px 18px rgba(77,223,253,0.35);}
.process-step h4{font-size:18px;font-weight:700;color:#fff;margin-bottom:8px;}
.process-step p{font-size:13px;color:rgba(255,255,255,0.6);line-height:1.6;}

/* ===== INDUSTRIES ===== */
.industry-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:14px;}
.industry-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 10px;text-align:center;font-size:16px;font-weight:600;color:var(--navy);box-shadow:0 2px 10px rgba(17,33,100,0.04);transition:all .25s;}
.industry-card:hover{background:var(--navy);color:#fff;transform:translateY(-4px);box-shadow:0 10px 24px rgba(17,33,100,0.2);}

/* ===== SHOWCASE ===== */
.showcase-wrap{text-align:center;}
.showcase-wrap img{max-width:520px;margin:0 auto;border-radius:18px;filter:drop-shadow(0 18px 44px rgba(17,33,100,0.18));}

/* ===== CTA ===== */
.cta{background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 100%);padding:80px 0;position:relative;overflow:hidden;}
.cta::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 80% 30%,rgba(77,223,253,0.16) 0%,transparent 45%);pointer-events:none;}
.cta-inner{position:relative;display:grid;grid-template-columns:1.4fr 0.6fr;gap:40px;align-items:center;}
.cta-text h2{font-size:36px;font-weight:900;color:#fff;margin-bottom:16px;}
.cta-text p{font-size:17px;color:rgba(255,255,255,0.72);line-height:1.8;margin-bottom:28px;}
.cta-btns{display:flex;gap:14px;flex-wrap:wrap;}
.cta-qr{background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.14);border-radius:18px;padding:18px;text-align:center;justify-self:center;}
.cta-qr img{width:200px;height:200px;border-radius:12px;}
.cta-qr span{display:block;margin-top:12px;color:rgba(255,255,255,0.6);font-size:13px;}

/* ===== FOOTER ===== */
.footer{background:#0c173d;color:rgba(255,255,255,0.6);padding:60px 0 0;}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer-logo{height:40px;margin-bottom:14px;}
.footer-brand{font-size:18px;font-weight:900;color:#fff;margin-bottom:12px;}
.footer-desc{font-size:13px;line-height:1.8;max-width:300px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13px;color:rgba(255,255,255,0.6);transition:color .2s;}
.footer-col a:hover{color:var(--cyan);}
.footer-contact p{font-size:13px;line-height:1.9;}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);text-align:center;padding:20px 24px;margin-top:48px;font-size:13px;color:rgba(255,255,255,0.45);}

/* ===== RESPONSIVE ===== */
@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:36px;text-align:center;}
  .hero-visual{order:-1;}
  .hero-text h1{font-size:34px;}
  .hero-btns{justify-content:center;}
  .hero-sub{margin-left:auto;margin-right:auto;}
  .hero-visual img{max-width:300px;}
  .stats-inner{grid-template-columns:repeat(2,1fr);}
  .card-grid.three{grid-template-columns:1fr;}
  .card-grid.two{grid-template-columns:1fr;}
  .process-flow{grid-template-columns:1fr 1fr;display:grid;}
  .industry-grid{grid-template-columns:repeat(4,1fr);}
  .cta-inner{grid-template-columns:1fr;text-align:center;}
  .cta-btns{justify-content:center;}
  .footer-inner{grid-template-columns:1fr 1fr;}
  .nav-menu{display:none;}
  .nav-toggle{display:block;}
  .nav-menu.open{display:flex;flex-direction:column;position:absolute;top:68px;left:0;right:0;background:#fff;padding:18px 24px;gap:14px;border-bottom:1px solid var(--line);box-shadow:0 8px 24px rgba(17,33,100,0.1);}
}
@media(max-width:560px){
  .topbar{font-size:12px;}
  .hero-text h1{font-size:28px;}
  .stat-num{font-size:34px;}
  .section{padding:60px 0;}
  .section-title{font-size:26px;}
  .process-flow{grid-template-columns:1fr;}
  .industry-grid{grid-template-columns:repeat(3,1fr);}
  .footer-inner{grid-template-columns:1fr;}
  .cta-text h2{font-size:28px;}
}