/* ============ 军途科技官网样式 ============ */
:root{
  --navy:#0B1F3A; --navy-2:#12294A; --navy-3:#1B3A66;
  --blue:#2563EB; --blue-2:#3B82F6; --blue-soft:#EFF6FF;
  --gold:#F5B83D; --ink:#1E293B; --text:#475569; --muted:#94A3B8;
  --line:#E2E8F0; --bg:#F8FAFC; --white:#fff;
  --r:14px; --shadow:0 6px 24px rgba(15,42,84,.08);
  --radius-sm:10px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
section{scroll-margin-top:76px}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:24px;height:66px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-logo{flex:none;filter:drop-shadow(0 2px 6px rgba(37,99,235,.35))}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:17px;color:var(--navy);letter-spacing:.5px}
.brand-text i{font-style:normal;font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:240px}
.main-nav{display:flex;gap:4px;margin-left:auto}
.main-nav a{padding:8px 13px;border-radius:8px;font-size:14.5px;color:var(--text);transition:.2s;white-space:nowrap}
.main-nav a:hover{color:var(--blue);background:var(--blue-soft)}
.main-nav a.active{color:var(--blue);background:var(--blue-soft);font-weight:600}
.header-right{display:flex;align-items:center;gap:14px;margin-left:8px}
.header-phone{font-weight:700;color:var(--navy);font-size:15px;white-space:nowrap}
.header-phone::before{content:"☎ ";color:var(--blue)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:22px;height:2px;background:var(--navy);border-radius:2px;transition:.25s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 通用块 ---------- */
.section{padding:64px 0}
.section.alt{background:var(--white)}
.section-head{text-align:center;max-width:720px;margin:0 auto 40px}
.section-head .kicker{display:inline-block;font-size:12.5px;letter-spacing:2px;color:var(--blue);background:var(--blue-soft);padding:4px 14px;border-radius:20px;font-weight:600;margin-bottom:14px}
.section-head h2{font-size:30px;color:var(--navy);letter-spacing:.5px}
.section-head p{color:var(--text);margin-top:10px;font-size:15px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 24px;border-radius:10px;font-weight:600;font-size:15px;transition:.2s;border:0;cursor:pointer}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(37,99,235,.3)}
.btn-primary:hover{background:#1D4ED8;transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.35)}
.btn-ghost:hover{background:rgba(255,255,255,.22)}
.btn-outline{background:#fff;color:var(--blue);border:1.5px solid var(--blue)}
.btn-outline:hover{background:var(--blue-soft)}
.btn-sm{padding:8px 16px;font-size:13.5px}

/* ---------- Hero ---------- */
.hero{background:radial-gradient(1100px 520px at 78% -10%,#1D4ED8 0%,transparent 55%),linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 55%,var(--navy-3) 100%);color:#fff;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);background-size:26px 26px;opacity:.5}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:76px 0 84px}
.hero h1{font-size:40px;line-height:1.3;letter-spacing:.5px;font-weight:800}
.hero h1 .hl{color:var(--gold)}
.hero .sub{color:#C7D6F2;margin:18px 0 28px;font-size:16.5px;max-width:520px}
.hero-stats{display:flex;gap:36px;margin-top:34px}
.hero-stats b{font-size:26px;color:var(--gold);display:block}
.hero-stats span{font-size:13px;color:#A9BEE4}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-visual{position:relative;z-index:2}
.hero-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:18px;padding:22px;backdrop-filter:blur(6px);box-shadow:0 24px 60px rgba(0,0,0,.3)}
.hero-card .card-title{display:flex;align-items:center;gap:8px;font-weight:700;font-size:15px;margin-bottom:16px}
.hero-card .card-title .dot{width:8px;height:8px;border-radius:50%;background:var(--gold)}
.flow{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.flow .step{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);padding:8px 14px;border-radius:10px;font-size:13px}
.flow .arrow{color:var(--gold)}
.hero-card .mini-stat{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
.hero-card .mini-stat div{background:rgba(255,255,255,.08);border-radius:10px;padding:10px;text-align:center}
.hero-card .mini-stat b{display:block;font-size:17px;color:var(--gold)}
.hero-card .mini-stat span{font-size:11.5px;color:#A9BEE4}
.float-chip{position:absolute;background:#fff;color:var(--navy);border-radius:12px;padding:10px 16px;font-size:13px;font-weight:600;box-shadow:var(--shadow);animation:floaty 3.5s ease-in-out infinite}
.float-chip.c1{top:8%;right:-14px}
.float-chip.c2{bottom:10%;left:-18px;animation-delay:1.2s}
.float-chip b{color:var(--blue)}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

/* ---------- 产品卡 ---------- */
.products-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.product-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:30px;transition:.25s;position:relative;overflow:hidden;display:flex;flex-direction:column}
.product-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--blue),var(--gold))}
.product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#C7D6F2}
.product-card .p-icon{font-size:38px;margin-bottom:14px}
.product-card h3{font-size:20px;color:var(--navy);margin-bottom:10px}
.product-card p{color:var(--text);font-size:14.5px;flex:1}
.product-card .feats{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
.product-card .feats span{font-size:12.5px;background:var(--blue-soft);color:var(--blue);padding:4px 11px;border-radius:20px;font-weight:500}
.product-card .more{color:var(--blue);font-weight:600;font-size:14px}

/* ---------- 场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:24px 20px;text-align:center;transition:.2s}
.scene-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.scene-card .s-ico{width:52px;height:52px;margin:0 auto 12px;border-radius:14px;background:linear-gradient(135deg,var(--blue),var(--blue-2));display:flex;align-items:center;justify-content:center;font-size:24px}
.scene-card h4{font-size:15.5px;color:var(--navy);margin-bottom:6px}
.scene-card p{font-size:13px;color:var(--muted)}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:26px;transition:.2s;display:block}
.case-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:#C7D6F2}
.case-card .case-tag{font-size:12px;color:var(--blue);background:var(--blue-soft);padding:3px 10px;border-radius:14px;display:inline-block;margin-bottom:12px}
.case-card h3{font-size:17px;color:var(--navy);margin-bottom:8px}
.case-card p{font-size:13.5px;color:var(--text);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 新闻 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:.2s;display:flex;flex-direction:column}
.news-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.news-card .n-meta{font-size:12.5px;color:var(--muted);margin-bottom:10px;display:flex;gap:10px;align-items:center}
.news-card .n-cat{color:var(--blue);background:var(--blue-soft);padding:2px 10px;border-radius:12px;font-size:12px}
.news-card h3{font-size:16.5px;color:var(--navy);margin-bottom:8px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card p{font-size:13.5px;color:var(--text);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:18px 22px;font-weight:600;color:var(--navy);font-size:15.5px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:"+";font-size:22px;color:var(--blue);transition:.2s;font-weight:400}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .a{padding:0 22px 18px;color:var(--text);font-size:14.5px}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(120deg,var(--navy),var(--navy-3));border-radius:20px;padding:46px 40px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;color:#fff;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-40px;top:-40px;width:220px;height:220px;border-radius:50%;background:rgba(37,99,235,.35)}
.cta-band h3{font-size:24px;margin-bottom:8px}
.cta-band p{color:#C7D6F2;font-size:15px}
.cta-band .btn{position:relative;z-index:2}

/* ---------- 内容页 ---------- */
.page-hero{background:linear-gradient(120deg,var(--navy),var(--navy-3));color:#fff;padding:54px 0}
.page-hero h1{font-size:30px;letter-spacing:.5px}
.page-hero p{color:#C7D6F2;margin-top:10px;font-size:15px;max-width:720px}
.crumbs{font-size:13px;color:#9FB6DE;margin-top:12px}
.crumbs a{color:#fff;opacity:.85}
.article-body{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:38px;font-size:15.5px;color:#334155}
.article-body h1{font-size:24px;color:var(--navy);margin:26px 0 14px}
.article-body h2{font-size:20px;color:var(--navy);margin:26px 0 12px;padding-left:12px;border-left:4px solid var(--blue)}
.article-body h3{font-size:17px;color:var(--navy);margin:20px 0 10px}
.article-body p{margin:12px 0}
.article-body ul{margin:12px 0 12px 22px}
.article-body li{margin:6px 0}
.article-body strong{color:var(--navy)}
.article-meta{display:flex;gap:16px;color:var(--muted);font-size:13px;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:22px;flex-wrap:wrap}
.detail-grid{display:grid;grid-template-columns:1fr 300px;gap:30px;align-items:start}
.side-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:20px;position:sticky;top:90px}
.side-card h4{font-size:15px;color:var(--navy);margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.side-card a{display:block;font-size:13.5px;color:var(--text);padding:7px 0;border-bottom:1px dashed var(--line)}
.side-card a:hover{color:var(--blue)}
.contact-box{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:28px;margin-bottom:20px}
.contact-box h3{font-size:17px;color:var(--navy);margin-bottom:14px}
.contact-box .row{display:flex;gap:12px;align-items:center;padding:9px 0;font-size:14.5px;color:var(--text)}
.contact-box .row b{color:var(--navy);min-width:70px}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-item{display:flex;flex-direction:column;gap:6px}
.form-item.full{grid-column:1/-1}
.form-item label{font-size:13.5px;color:var(--text);font-weight:500}
.form-item input,.form-item textarea,.form-item select{padding:11px 14px;border:1.5px solid var(--line);border-radius:var(--radius-sm);font-size:14.5px;font-family:inherit;transition:.2s;background:#fff;color:var(--ink)}
.form-item input:focus,.form-item textarea:focus,.form-item select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.form-item textarea{min-height:110px;resize:vertical}
.form-tip{font-size:12.5px;color:var(--muted)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--navy);color:#B8C7E4;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 40px}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:16px;letter-spacing:.5px}
.footer-col p{font-size:13.5px;line-height:1.8;color:#93A7CC}
.footer-col a,.footer-col span{display:block;font-size:13.5px;padding:5px 0;color:#B8C7E4}
.footer-col a:hover{color:var(--gold)}
.footer-badges{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.footer-badges .badge{font-size:12px;border:1px solid rgba(255,255,255,.25);padding:3px 10px;border-radius:14px;color:#C7D6F2}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:13px;color:#7E93BA}
.footer-bottom .container{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}

/* ---------- 悬浮条 ---------- */
.float-bar{position:fixed;right:18px;bottom:22px;z-index:99;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.float-call{width:52px;height:52px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(37,99,235,.4)}
.float-chat{background:var(--gold);color:var(--navy);font-weight:700;font-size:13.5px;padding:11px 18px;border-radius:24px;box-shadow:0 8px 20px rgba(245,184,61,.4)}

/* ---------- 分页 ---------- */
.pagination{display:flex;gap:8px;justify-content:center;margin-top:36px}
.pagination a,.pagination span{min-width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:#fff;border:1px solid var(--line);font-size:14px;color:var(--text)}
.pagination a:hover{border-color:var(--blue);color:var(--blue)}
.pagination .cur{background:var(--blue);color:#fff;border-color:var(--blue);font-weight:600}
.empty{text-align:center;padding:60px 0;color:var(--muted)}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;padding:56px 0 64px}
  .hero-visual{max-width:520px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  .main-nav{position:fixed;top:66px;left:0;right:0;background:#fff;flex-direction:column;padding:12px 20px 20px;box-shadow:0 20px 40px rgba(0,0,0,.12);display:none;border-bottom:1px solid var(--line)}
  .main-nav.open{display:flex}
  .nav-toggle{display:flex}
  .header-phone{display:none}
  .products-grid{grid-template-columns:1fr}
  .detail-grid{grid-template-columns:1fr}
  .side-card{position:static}
}
@media(max-width:640px){
  .section{padding:44px 0}
  .section-head h2{font-size:24px}
  .hero h1{font-size:28px}
  .hero-stats{gap:22px;flex-wrap:wrap}
  .case-grid,.news-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 24px}
  .article-body{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:40px 0 28px}
  .float-chip.c1{right:-6px}
  .float-chip.c2{left:-6px}
}