/* ============ 设计令牌 ============ */
:root{
  --navy-950:#071B45;
  --navy-900:#0B2F6E;
  --navy-800:#0E3A86;
  --navy-700:#1249A8;
  --blue-600:#1D58D6;
  --blue-500:#3072E0;
  --blue-400:#6899EC;
  --cyan-400:#1FC2E4;
  --gold-400:#F5B03B;
  --gold-300:#F7C25E;
  --bg:#F4F7FD;
  --bg-soft:#EAF0FB;
  --ink-900:#0F1B2D;
  --ink-600:#46566F;
  --ink-400:#7A8AA3;
  --line:#E3EAF6;
  --white:#FFFFFF;
  --radius:16px;
  --shadow-sm:0 1px 3px rgba(7,22,49,.08),0 6px 20px rgba(7,22,49,.06);
  --shadow-md:0 8px 30px rgba(7,22,49,.10);
  --maxw:1180px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans SC","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--ink-900);background:var(--white);line-height:1.7;font-size:16px;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;text-wrap:pretty}
p{text-wrap:pretty}
h1,h2,h3,h4,.eyebrow,.stat b,.brand-logo,.brand-text strong,.case-num,.tag,.service-card h3,.detail-copy h3,.about-badge b,.about-text h2,.contact-form h3{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
section{scroll-margin-top:76px}

/* ============ 顶部导航 ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(7,22,49,.92);backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,.08);transition:background .3s}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:0 20px;height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-logo{width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,var(--blue-500),var(--cyan-400));display:grid;place-items:center;color:#fff;font-weight:800;font-size:23px;line-height:1}
.brand-logo-img{height:42px;width:auto;background:#fff;border-radius:9px;padding:4px 10px;display:block;object-fit:contain}
.brand-text{color:#fff;line-height:1.2}
.brand-text strong{display:block;font-size:20px;font-weight:800;letter-spacing:.5px;color:#fff}
.brand-text span{display:block;font-size:13px;color:rgba(255,255,255,.82);letter-spacing:.3px}
.nav{display:none;align-items:center;gap:2px}
.nav a{color:rgba(255,255,255,.82);font-size:14.5px;padding:9px 11px;border-radius:8px;transition:color .2s,background .2s;white-space:nowrap}
.nav a:hover,.nav a.active{color:#fff;background:rgba(255,255,255,.10)}
.header-cta{display:none;align-items:center;gap:10px;flex-shrink:0;-ms-flex-negative:0;white-space:nowrap}
.header-phone{display:flex;align-items:center;gap:8px;color:#fff;font-size:14px;white-space:nowrap;flex-shrink:0;-ms-flex-negative:0}
.header-phone b{color:var(--gold-300);font-weight:700;font-size:16px;white-space:nowrap;display:inline-block;flex-shrink:0;-ms-flex-negative:0}
.header-phone-m{display:flex;align-items:center;gap:6px;color:var(--gold-300);font-size:14px;font-weight:700;white-space:nowrap;flex-shrink:0;margin-right:auto;-ms-flex-negative:0}
.btn-cta{background:linear-gradient(135deg,var(--gold-400),var(--gold-300));color:var(--navy-900);font-weight:700;padding:10px 18px;border-radius:9px;font-size:15px;transition:transform .2s,box-shadow .2s;box-shadow:0 4px 14px rgba(245,176,59,.35)}
.btn-cta:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(245,176,59,.45)}
.nav-toggle{display:inline-flex;flex-direction:column;gap:5px;padding:10px;border-radius:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:transform .3s,opacity .3s}
.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)}

/* 移动端抽屉菜单 */
.mobile-menu{position:fixed;top:72px;left:0;right:0;z-index:99;background:var(--navy-900);border-bottom:1px solid rgba(255,255,255,.1);max-height:0;overflow:hidden;transition:max-height .35s ease}
.mobile-menu.open{max-height:520px;overflow:auto}
.mobile-menu nav{display:grid;gap:2px;padding:12px 20px 20px}
.mobile-menu a{color:rgba(255,255,255,.88);padding:13px 12px;border-radius:8px;font-size:16px}
.mobile-menu a:hover,.mobile-menu a.active{background:rgba(255,255,255,.1);color:#fff}
.mobile-menu .btn-cta{margin-top:10px;text-align:center;display:block;padding:13px;font-size:16px}

/* ============ 首屏 Hero ============ */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:70px 0 40px;background:#0B2F6E;background:var(--navy-900);overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('assets/hero.jpg');background-size:cover;background-position:center right;opacity:.5}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,47,110,.96) 0%,rgba(11,47,110,.84) 45%,rgba(11,47,110,.20) 100%)}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:60px 60px;opacity:.6}
.hero-inner{position:relative;z-index:2;width:100%}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan-400);font-size:16px;letter-spacing:2px;font-weight:700;margin-bottom:22px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan-400);border-radius:2px}
.hero h1{font-size:17px;line-height:1.3;font-weight:800;color:#fff;max-width:720px;margin-bottom:22px;letter-spacing:.5px;white-space:nowrap}
.hero h1 .hl{color:var(--cyan-400)}
@supports ((-webkit-background-clip:text) or (background-clip:text)){
  .hero h1 .hl{background:linear-gradient(90deg,var(--cyan-400),var(--blue-400));-webkit-background-clip:text;background-clip:text;color:transparent}
}
.hero-sub{font-size:17px;color:rgba(255,255,255,.82);max-width:620px;margin-bottom:34px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.btn-primary{background:linear-gradient(135deg,var(--blue-500),var(--blue-600));color:#fff;font-weight:700;font-size:16px;padding:14px 30px;border-radius:10px;box-shadow:0 8px 24px rgba(43,124,246,.4);transition:transform .2s,box-shadow .2s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(43,124,246,.5)}
.btn-ghost{border:1px solid rgba(255,255,255,.4);color:#fff;font-weight:600;font-size:16px;padding:14px 30px;border-radius:10px;transition:background .2s,border .2s}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.hero-stats{margin-top:52px;display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);border-radius:14px;overflow:hidden;max-width:680px}
.stat{background:rgba(11,47,110,.55);padding:22px 26px}
.stat b{display:block;font-size:52px;font-weight:800;color:#fff;line-height:1.05}
.stat b em{font-style:normal;color:var(--gold-300);font-size:.58em}
.stat span{font-size:14px;color:rgba(255,255,255,.72)}
.stat .num{font-variant-numeric:tabular-nums}

/* ============ 首屏动态效果 ============ */
.hero-dynamic{position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden}
.hero-dynamic .orb{position:absolute;border-radius:50%;filter:blur(56px);opacity:.42}
.hero-dynamic .orb1{width:340px;height:340px;background:radial-gradient(circle,rgba(47,114,224,.75),transparent 68%);top:16%;right:10%}
.hero-dynamic .orb2{width:260px;height:260px;background:radial-gradient(circle,rgba(31,194,228,.68),transparent 68%);bottom:14%;right:34%}
.hero-dynamic .orb3{width:200px;height:200px;background:radial-gradient(circle,rgba(104,153,236,.62),transparent 68%);top:58%;right:4%}
.hero-dynamic .p{position:absolute;border-radius:50%;background:#9FE0FF;opacity:.6}
.hero-dynamic .p1{width:7px;height:7px;top:20%;right:9%}
.hero-dynamic .p2{width:5px;height:5px;top:34%;right:26%}
.hero-dynamic .p3{width:6px;height:6px;top:52%;right:16%}
.hero-dynamic .p4{width:4px;height:4px;top:70%;right:42%}
.hero-dynamic .p5{width:8px;height:8px;top:78%;right:18%}
.hero-dynamic .p6{width:5px;height:5px;top:12%;right:38%}
.hero-dynamic .p7{width:6px;height:6px;top:44%;right:48%}
.hero-dynamic .p8{width:4px;height:4px;top:66%;right:8%}
@keyframes orbDrift{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(34px,-30px) scale(1.1)}}
@keyframes particleFloat{0%,100%{transform:translateY(0);opacity:.45}50%{transform:translateY(-26px);opacity:.95}}
@keyframes riseIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes hlShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@media (prefers-reduced-motion: no-preference){
  .hero-dynamic .orb{animation:orbDrift 16s ease-in-out infinite}
  .hero-dynamic .orb1{animation-delay:0s}
  .hero-dynamic .orb2{animation-delay:-5s}
  .hero-dynamic .orb3{animation-delay:-9s}
  .hero-dynamic .p{animation:particleFloat 7s ease-in-out infinite}
  .hero-dynamic .p1{animation-delay:0s}.hero-dynamic .p2{animation-delay:-1.4s}.hero-dynamic .p3{animation-delay:-2.8s}.hero-dynamic .p4{animation-delay:-4s}.hero-dynamic .p5{animation-delay:-5.2s}.hero-dynamic .p6{animation-delay:-.8s}.hero-dynamic .p7{animation-delay:-3.4s}.hero-dynamic .p8{animation-delay:-6s}
  .hero-inner .eyebrow,.hero-inner h1,.hero-inner .hero-sub,.hero-inner .hero-actions,.hero-inner .hero-stats{opacity:0;animation:riseIn .7s cubic-bezier(.22,.61,.36,1) forwards}
  .hero-inner .eyebrow{animation-delay:.05s}
  .hero-inner h1{animation-delay:.15s}
  .hero-inner .hero-sub{animation-delay:.28s}
  .hero-inner .hero-actions{animation-delay:.42s}
  .hero-inner .hero-stats{animation-delay:.55s}
  .hero h1 .hl{background-size:200% 200%;animation:hlShift 6s linear infinite}
}

/* ============ 通用区块 ============ */
.section{padding:64px 0}
.section-head{max-width:760px;margin:0 auto 52px;text-align:center}
.section-head .tag{display:inline-block;color:var(--blue-600);background:rgba(43,124,246,.1);font-size:23px;font-weight:700;letter-spacing:1px;padding:10px 24px;border-radius:26px;margin-bottom:24px}
.section-head h2{font-size:17px;font-weight:800;line-height:1.3;color:var(--ink-900)}
.section-head p{color:var(--ink-600);margin-top:14px;font-size:16px}
.section.light{background:var(--white)}
.section.soft{background:#F4F7FD;background:var(--bg)}

/* ============ 核心服务卡片 ============ */
.service-grid{display:grid;grid-template-columns:repeat(1,1fr);gap:14px}
.service-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 18px;transition:transform .25s,box-shadow .25s,border-color .25s;position:relative;overflow:hidden;display:grid;grid-template-columns:54px 1fr;column-gap:14px;row-gap:6px;align-items:start}
.service-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--blue-500),var(--cyan-400));opacity:0;transition:opacity .25s}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:transparent}
.service-card:hover::before{opacity:1}
.service-icon{width:54px;height:54px;border-radius:14px;background:linear-gradient(135deg,rgba(43,124,246,.12),rgba(34,211,238,.12));display:grid;place-items:center;margin-bottom:0;color:var(--blue-600);grid-column:1;grid-row:1}
.service-card h3{font-size:20px;font-weight:700;margin-bottom:0;color:var(--ink-900);grid-column:2;grid-row:1;align-self:center}
.service-card p{font-size:14.5px;color:var(--ink-600);margin-bottom:12px;grid-column:1/-1;grid-row:2}
.service-more{font-size:14px;color:var(--blue-600);font-weight:600;display:inline-flex;align-items:center;gap:6px;grid-column:1/-1;grid-row:3}
.service-more svg{transition:transform .2s}
.service-card:hover .service-more svg{transform:translateX(4px)}

/* ============ 公司简介 ============ */
.about-wrap{display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
.about-media{position:relative}
.about-media img{border-radius:18px;box-shadow:var(--shadow-md);object-fit:cover;aspect-ratio:4/3}
.about-badge{position:absolute;right:14px;bottom:14px;background:var(--navy-900);color:#fff;border-radius:12px;padding:16px 20px;display:flex;align-items:center;gap:12px}
.about-badge b{font-size:30px;font-weight:800;color:var(--gold-300);line-height:1}
.about-badge span{font-size:13px;color:rgba(255,255,255,.8)}
.about-text .eyebrow{color:var(--blue-600);justify-content:flex-start}
.about-text .eyebrow::before{background:var(--blue-600)}
.about-text h2{font-size:17px;font-weight:800;line-height:1.3;margin-bottom:18px}
.about-text h2 em{font-style:normal;color:var(--blue-600)}
.about-text p{color:var(--ink-600);margin-bottom:16px;font-size:15.5px}
.philosophy{margin:22px 0;padding:18px 20px;border-left:4px solid var(--gold-400);background:var(--bg);border-radius:0 12px 12px 0}
.philosophy b{color:var(--ink-900)}
.philosophy span{color:var(--ink-600)}
.pillars{display:grid;grid-template-columns:1fr;gap:16px;margin-top:8px}
.pillar{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;align-items:flex-start}
.pillar-icon{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--blue-500),var(--cyan-400));color:#fff;display:grid;place-items:center;flex-shrink:0}
.pillar h4{font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:4px}
.pillar p{font-size:13.5px;color:var(--ink-600);margin:0}

/* ============ 客户案例 ============ */
.case-grid{display:grid;grid-template-columns:repeat(1,1fr);gap:22px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .25s,box-shadow .25s;position:relative}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.case-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.case-tag{font-size:12px;font-weight:700;color:var(--blue-600);background:rgba(43,124,246,.1);padding:5px 12px;border-radius:20px;letter-spacing:1px}
.case-num{font-size:34px;font-weight:800;color:var(--bg-soft);line-height:1}
.case-card h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--ink-900)}
.case-card p{font-size:14px;color:var(--ink-600);margin-bottom:14px}
.case-points{display:grid;gap:8px}
.case-points li{font-size:13.5px;color:var(--ink-600);display:flex;gap:8px;align-items:flex-start}
.case-points li::before{content:"";flex-shrink:0;width:6px;height:6px;border-radius:50%;background:linear-gradient(135deg,var(--blue-500),var(--cyan-400));margin-top:8px}

/* ============ 业务详情 ============ */
.detail{background:#0B2F6E;background:var(--navy-900);color:#fff;padding:104px 0}
.detail .section-head h2{color:#fff}
.detail .section-head .tag{background:rgba(34,211,238,.14);color:var(--cyan-400)}
.detail .section-head p{color:rgba(255,255,255,.72)}
.detail-wrap{display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
.detail-media{order:1;border-radius:18px;overflow:hidden;box-shadow:0 18px 50px rgba(0,0,0,.35);border:1px solid rgba(255,255,255,.12)}
.detail-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.detail-copy{order:2}
.detail-copy h3{font-size:24px;font-weight:800;margin-bottom:16px;line-height:1.35}
.detail-copy h3 em{font-style:normal;color:var(--cyan-400)}
.detail-copy>p{color:rgba(255,255,255,.78);margin-bottom:20px;font-size:15.5px;line-height:1.9}
.detail-list{display:grid;gap:14px}
.detail-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.88)}
.detail-list li svg{flex-shrink:0;margin-top:3px;color:var(--gold-300)}
.detail-flow{margin-top:28px;padding-top:26px;border-top:1px solid rgba(255,255,255,.12)}
.flow-title{font-size:14px;font-weight:700;color:var(--cyan-400);letter-spacing:1px;margin-bottom:16px}
.flow-steps{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.flow-step{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:16px}
.flow-step b{display:block;color:var(--gold-300);font-size:14px;white-space:nowrap;margin-bottom:4px}
.flow-step span{font-size:13px;color:rgba(255,255,255,.7)}

.detail.alt{background:var(--white);color:var(--ink-900)}
.detail.alt .section-head h2{color:var(--ink-900)}
.detail.alt .section-head .tag{background:rgba(43,124,246,.1);color:var(--blue-600)}
.detail.alt .section-head p{color:var(--ink-600)}
.detail.alt .detail-copy h3 em{color:var(--blue-600)}
.detail.alt .detail-copy>p{color:var(--ink-600)}
.detail.alt .detail-list li{color:var(--ink-900)}
.detail.alt .detail-list li svg{color:var(--blue-600)}
.detail.alt .detail-flow{border-top-color:var(--line)}
.detail.alt .flow-title{color:var(--blue-600)}
.detail.alt .flow-step{background:var(--bg);border-color:var(--line)}
.detail.alt .flow-step b{color:var(--navy-900)}
.detail.alt .flow-step span{color:var(--ink-600)}

/* ============ 新闻动态 ============ */
.news-grid{display:grid;grid-template-columns:repeat(1,1fr);gap:22px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:12px;transition:transform .25s,box-shadow .25s}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.news-date{display:flex;align-items:center;gap:10px;color:var(--ink-400);font-size:13px}
.news-card h3{font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.5}
.news-card p{font-size:14px;color:var(--ink-600)}
.news-card p.news-time{font-size:13px;color:var(--ink-400)}

/* ============ 联系我们 ============ */
.contact{background:#F4F7FD;background:var(--bg);padding:104px 0}
.contact-wrap{display:grid;grid-template-columns:1fr;gap:40px}
.contact-info{display:grid;gap:20px}
.contact-item{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;align-items:center;transition:transform .25s,box-shadow .25s}
.contact-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.contact-icon{width:50px;height:50px;border-radius:13px;background:linear-gradient(135deg,var(--blue-500),var(--cyan-400));color:#fff;display:grid;place-items:center;flex-shrink:0}
.contact-item b{display:block;font-size:16px;color:var(--ink-900);margin-bottom:3px}
.contact-item span{font-size:14px;color:var(--ink-600)}
.contact-item a{color:var(--blue-600);font-weight:600}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}
.contact-form h3{font-size:22px;font-weight:800;margin-bottom:6px;color:var(--ink-900)}
.contact-form .sub{font-size:14px;color:var(--ink-600);margin-bottom:22px}
.form-row{display:grid;grid-template-columns:1fr;gap:14px}
.form-group label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:6px}
.form-group input,.form-group textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:13px 14px;font-size:16px;font-family:inherit;background:var(--bg);transition:border-color .2s,box-shadow .2s;color:var(--ink-900)}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--blue-500);box-shadow:0 0 0 3px rgba(43,124,246,.14);background:#fff}
.form-group textarea{resize:vertical;min-height:110px}
.btn-submit{width:100%;background:linear-gradient(135deg,var(--blue-500),var(--blue-600));color:#fff;font-weight:700;font-size:16px;padding:15px;border-radius:10px;margin-top:6px;box-shadow:0 6px 18px rgba(43,124,246,.3);transition:transform .2s,box-shadow .2s}
.btn-submit:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(43,124,246,.4)}

/* ============ 页脚 ============ */
.site-footer{background:
  radial-gradient(1100px 420px at 50% -8%,rgba(43,124,246,.28),transparent 62%),
  linear-gradient(180deg,#0B2B6B 0%,#071B45 38%,#050F2C 100%);
  color:rgba(255,255,255,.82);padding:74px 0 0;position:relative}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,rgba(56,182,255,.7),transparent)}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px 24px;padding-bottom:48px}
.footer-grid .footer-brand{grid-column:1/-1}
.footer-grid .contact-col{grid-column:1/-1}
.footer-brand .brand-text strong{color:#fff;font-size:21px;letter-spacing:.5px}
.footer-brand .brand-slogan{display:flex;align-items:center;gap:8px;margin-top:12px;color:var(--cyan-400);font-size:13px;font-weight:600;letter-spacing:.4px}
.footer-brand .brand-slogan::before{content:"";width:20px;height:2px;background:linear-gradient(90deg,var(--cyan-400),transparent);flex-shrink:0;border-radius:2px}
.footer-brand p{font-size:13.5px;margin-top:16px;color:rgba(255,255,255,.62);line-height:2;max-width:340px}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:20px;position:relative;padding-left:12px}
.footer-col h4::before{content:"";position:absolute;left:0;top:2px;bottom:2px;width:4px;border-radius:2px;background:linear-gradient(180deg,var(--cyan-400),var(--blue-500))}
.footer-col h4::after{content:"";position:absolute;left:12px;bottom:-8px;width:30px;height:2px;background:linear-gradient(90deg,var(--cyan-400),transparent);border-radius:2px}
.footer-col a{display:flex;align-items:center;gap:9px;color:rgba(255,255,255,.74);font-size:13.5px;padding:6px 0;transition:color .2s,transform .2s;white-space:nowrap}
.footer-col a svg{flex-shrink:0;width:15px;height:15px;opacity:.72;transition:opacity .2s,transform .2s}
.footer-col a:hover{color:var(--cyan-400);transform:translateX(4px)}
.footer-col a:hover svg{opacity:1}
.footer-col.contact-col a{gap:10px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:24px 0;font-size:13.5px;color:rgba(255,255,255,.6);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;position:relative;margin-top:6px}
.footer-bottom::before{content:"";position:absolute;left:0;right:0;top:-1px;height:2px;background:linear-gradient(90deg,rgba(56,182,255,.65),transparent 55%)}
.fb-left{display:flex;align-items:center;flex-wrap:wrap;gap:6px 18px}
.fb-left .beian a{color:rgba(255,255,255,.6);text-decoration:none;transition:color .2s}
.fb-left .beian a:hover{color:var(--cyan-400)}
.fb-right{margin-left:auto;display:flex;align-items:center;flex-wrap:wrap;gap:6px 22px;color:rgba(255,255,255,.68)}
.fb-full{flex-basis:100%;text-align:center;margin-top:18px;color:rgba(255,255,255,.5);font-size:13px;letter-spacing:.3px;display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap}
.fb-full::before,.fb-full::after{content:"";height:1px;flex:1 1 80px;max-width:150px;background:linear-gradient(90deg,rgba(56,182,255,0),rgba(56,182,255,.45),rgba(56,182,255,.45),rgba(56,182,255,0))}
.fb-full .fb-label{display:inline-flex;align-items:center;gap:6px;color:var(--cyan-400);font-weight:700;font-size:13px;letter-spacing:.5px}
.fb-full .fb-label::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--cyan-400);flex-shrink:0}
.fb-full b{color:var(--cyan-400);font-weight:600;margin:0 2px}

/* 手机端页脚精简：只保留品牌、联系方式与版权一行 */
@media (max-width:767px){
  .footer-grid .footer-col{display:none}
  .footer-grid .footer-brand,.footer-grid .footer-col.contact-col{display:block}
  .footer-brand p,.footer-brand .brand-slogan{display:none}
  .footer-bottom{flex-direction:column;align-items:center;text-align:center;gap:8px}
  .footer-bottom .fb-right,.footer-bottom .fb-full{display:none}
  .fb-left{justify-content:center}
}

/* ============ 返回顶部 ============ */
.to-top{position:fixed;right:20px;bottom:24px;z-index:90;width:48px;height:48px;border-radius:12px;background:var(--navy-900);color:#fff;display:grid;place-items:center;opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .3s,transform .3s,visibility .3s;box-shadow:var(--shadow-md)}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}

/* ============ 手机端一键拨号 ============ */
.call-fab{position:fixed;right:20px;bottom:86px;z-index:91;display:flex;align-items:center;gap:8px;background:var(--blue-600);color:#fff;border-radius:50px;padding:12px 18px;font-size:15px;font-weight:700;box-shadow:0 6px 20px rgba(11,47,110,.35);text-decoration:none;transition:transform .25s,box-shadow .25s}
.call-fab svg{flex-shrink:0}
.call-fab:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(11,47,110,.45)}

/* ============ Toast ============ */
.toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%) translateY(20px);background:var(--navy-900);color:#fff;padding:14px 24px;border-radius:12px;font-size:15px;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transition:opacity .3s,transform .3s,visibility .3s;z-index:120;max-width:86%;text-align:center}
.toast.show{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}

/* ============ 响应式断点 ============ */
@media (min-width:768px){
  .nav{display:flex}
  .header-cta{display:flex}
  .header-phone-m{display:none}
  .call-fab{display:none}
  .nav-toggle{display:none}
  .hero h1{font-size:44px;white-space:nowrap}
  .hero{padding:120px 0 90px}
  .section{padding:104px 0}
  .section-head h2{font-size:32px}
  .about-text h2{font-size:30px}
  .hero-stats{grid-template-columns:repeat(4,1fr)}
  .service-grid{grid-template-columns:repeat(3,1fr);gap:22px}
  .service-card{padding:28px 26px}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .pillars{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:2fr 1fr 1fr 1.2fr;gap:34px}
  .footer-grid .footer-brand,.footer-grid .contact-col{grid-column:auto}
  .footer-bottom{flex-direction:row;justify-content:space-between;text-align:left}
  .footer-bottom .fb-full{flex-basis:100%;text-align:center;margin-top:18px}
  .form-row{grid-template-columns:1fr 1fr}
  .form-row .full{grid-column:1/-1}
}
@media (min-width:1024px){
  .about-wrap{grid-template-columns:1fr 1.1fr;gap:56px}
  .detail-wrap{grid-template-columns:1fr 1fr;gap:56px}
  .detail-media{order:0}
  .detail-copy{order:1}
  .contact-wrap{grid-template-columns:1fr 1.1fr;gap:48px}
  .flow-steps{grid-template-columns:repeat(4,1fr)}
}