/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --accent:#06b6d4;
  --dark:#0f172a;
  --text:#1e293b;
  --muted:#64748b;
  --light:#f8fafc;
  --border:#e8edf3;
  --white:#fff;
  --max:1180px;
  --shadow:0 10px 30px rgba(15,23,42,.06);
  --shadow-lg:0 20px 50px rgba(15,23,42,.12);
}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  color:var(--text);background:var(--white);line-height:1.75;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
section{padding:88px 0}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.eyebrow{display:inline-block;color:var(--primary);font-size:14px;font-weight:600;letter-spacing:2px;margin-bottom:14px;text-transform:uppercase}
.section-head h2{font-size:34px;color:var(--dark);line-height:1.3;margin-bottom:16px}
.section-head p{color:var(--muted);font-size:16px}

/* ============ 导航栏 ============ */
.navbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--dark)}
.logo .mark{width:36px;height:36px}
.logo small{display:block;font-size:11px;font-weight:400;color:var(--muted);letter-spacing:1px}
.nav-links{display:flex;gap:4px;align-items:center}
.nav-links a{padding:8px 16px;border-radius:8px;font-size:15px;color:var(--text);transition:.2s}
.nav-links a:hover{background:var(--light);color:var(--primary)}
.nav-links a.active{color:var(--primary);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:42px;height:42px;border:none;background:var(--light);border-radius:10px;cursor:pointer;font-size:20px;color:var(--dark)}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:9px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:.25s;text-align:center}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(37,99,235,.32)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(0,0,0,.15)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--border)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary-dark)}

/* ============ Hero ============ */
.hero{position:relative;color:#fff;padding:96px 0 110px;background:linear-gradient(135deg,#0b1226 0%,#15296b 55%,#2563eb 100%);overflow:hidden}
.hero::before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(6,182,212,.45),transparent 65%);top:-160px;right:-120px}
.hero::after{content:"";position:absolute;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.5),transparent 65%);bottom:-160px;left:-100px}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero h1{font-size:46px;line-height:1.25;font-weight:800;margin-bottom:22px;letter-spacing:.5px}
.hero h1 span{background:linear-gradient(90deg,#7dd3fc,#22d3ee);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18px;color:rgba(255,255,255,.82);margin-bottom:34px;max-width:540px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-badges{display:flex;gap:26px;margin-top:38px;flex-wrap:wrap}
.hero-badges .b{font-size:13px;color:rgba(255,255,255,.78)}
.hero-badges .b strong{display:block;font-size:24px;color:#fff;font-weight:700}
.hero-visual{position:relative}
.hero-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:18px;padding:26px;backdrop-filter:blur(6px);box-shadow:var(--shadow-lg)}
.hero-card .row{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.hero-card .row:last-child{border-bottom:none}
.hero-card .ic{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.14);display:flex;align-items:center;justify-content:center;font-size:18px}
.hero-card .row strong{display:block;font-size:15px}
.hero-card .row small{color:rgba(255,255,255,.7);font-size:12.5px}

/* ============ 内页 Banner ============ */
.page-banner{position:relative;color:#fff;padding:74px 0;background:linear-gradient(135deg,#0b1226 0%,#15296b 60%,#1d4ed8 100%);overflow:hidden}
.page-banner::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(6,182,212,.35),transparent 65%);top:-140px;right:-80px}
.page-banner .container{position:relative;z-index:2}
.page-banner h1{font-size:38px;font-weight:800;margin-bottom:12px}
.page-banner p{color:rgba(255,255,255,.8);font-size:16px;max-width:620px}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.65);margin-bottom:16px}
.breadcrumb a:hover{color:#fff}

/* ============ 业务卡片 ============ */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:34px 30px;transition:.25s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.card .ic{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;background:linear-gradient(135deg,#dbeafe,#e0f2fe);color:var(--primary);margin-bottom:20px}
.card h3{font-size:19px;color:var(--dark);margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}

/* ============ 优势 / 特性 ============ */
.feature-section{background:var(--light)}
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature{text-align:center;padding:24px}
.feature .ic{width:60px;height:60px;border-radius:50%;background:#fff;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary);margin:0 auto 16px}
.feature h4{font-size:17px;color:var(--dark);margin-bottom:8px}
.feature p{font-size:14px;color:var(--muted)}

/* ============ 数据条 ============ */
.stats{background:var(--dark);color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stats-grid .num{font-size:40px;font-weight:800;background:linear-gradient(90deg,#7dd3fc,#22d3ee);-webkit-background-clip:text;background-clip:text;color:transparent}
.stats-grid .lbl{color:rgba(255,255,255,.7);font-size:14px;margin-top:6px}

/* ============ 关于：两栏 ============ */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.two-col h2{font-size:30px;color:var(--dark);margin-bottom:18px;line-height:1.35}
.two-col p{color:var(--muted);margin-bottom:14px}
.two-col ul.check{margin-top:18px}
.two-col ul.check li{position:relative;padding-left:30px;margin-bottom:12px;color:var(--text)}
.two-col ul.check li::before{content:"✓";position:absolute;left:0;top:0;width:20px;height:20px;border-radius:50%;background:#dcfce7;color:#16a34a;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.about-visual{background:linear-gradient(135deg,#eff6ff,#e0f2fe);border-radius:18px;padding:36px;border:1px solid var(--border)}
.about-visual h3{color:var(--primary);margin-bottom:6px}

/* ============ 使命愿景价值观 ============ */
.mvv{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.mvv .item{background:#fff;border:1px solid var(--border);border-radius:16px;padding:32px}
.mvv .item .ic{font-size:30px;margin-bottom:14px}
.mvv .item h3{font-size:19px;color:var(--dark);margin-bottom:8px}
.mvv .item p{color:var(--muted);font-size:14.5px}

/* ============ 时间轴 ============ */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:28px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:var(--border)}
.timeline .t-item{position:relative;padding-bottom:34px}
.timeline .t-item::before{content:"";position:absolute;left:-28px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px #dbeafe}
.timeline .year{color:var(--primary);font-weight:700;font-size:15px}
.timeline .t-item h4{font-size:17px;color:var(--dark);margin:4px 0 6px}
.timeline .t-item p{color:var(--muted);font-size:14.5px}

/* ============ 服务列表（带图标） ============ */
.service-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.service-item{display:flex;gap:18px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:26px;transition:.2s}
.service-item:hover{box-shadow:var(--shadow);border-color:transparent;transform:translateY(-3px)}
.service-item .ic{flex:0 0 52px;width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,#2563eb,#06b6d4);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px}
.service-item h3{font-size:18px;color:var(--dark);margin-bottom:6px}
.service-item p{color:var(--muted);font-size:14.5px}

/* ============ 服务流程 ============ */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{text-align:center;position:relative;padding:24px 18px}
.step .n{width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;font-weight:700;font-size:18px;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.step h4{font-size:16px;color:var(--dark);margin-bottom:6px}
.step p{font-size:13.5px;color:var(--muted)}

/* ============ CTA 带 ============ */
.cta{background:linear-gradient(135deg,#15296b,#2563eb);color:#fff;text-align:center}
.cta h2{font-size:32px;margin-bottom:14px}
.cta p{color:rgba(255,255,255,.85);margin-bottom:28px;font-size:16px}

/* ============ 联系区 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-info .ci{display:flex;gap:16px;margin-bottom:22px}
.contact-info .ci .ic{flex:0 0 46px;width:46px;height:46px;border-radius:12px;background:var(--light);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--primary)}
.contact-info .ci h4{font-size:15px;color:var(--dark);margin-bottom:2px}
.contact-info .ci p{color:var(--muted);font-size:14.5px}
.contact-card{background:var(--light);border:1px solid var(--border);border-radius:16px;padding:32px}
.contact-card h3{font-size:20px;color:var(--dark);margin-bottom:6px}
.contact-card p.sub{color:var(--muted);font-size:14px;margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--dark);margin-bottom:6px;font-weight:500}
.field input,.field textarea{width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:9px;font-family:inherit;font-size:14px;background:#fff;transition:.2s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.field textarea{resize:vertical;min-height:96px}

/* ============ 页脚 ============ */
.footer{background:#0b1226;color:rgba(255,255,255,.7)}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.footer .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.7;max-width:300px}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer ul li{margin-bottom:10px}
.footer ul li a{font-size:14px;transition:.2s}
.footer ul li a:hover{color:#fff}
.footer-contact p{font-size:14px;margin-bottom:10px;display:flex;gap:8px;align-items:flex-start}
.footer-contact .ic{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0}
.footer-bottom .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px}
.footer-bottom .beian a{color:rgba(255,255,255,.7);transition:.2s}
.footer-bottom .beian a:hover{color:#fff}
.footer-bottom .beian .sep{margin:0 8px;opacity:.4}
.beian-icp{display:inline-flex;align-items:center;gap:6px}
.beian-icp::before{content:"";display:inline-block;width:14px;height:14px;background:#fff;border-radius:2px;-webkit-mask:linear-gradient(#000,#000) padding-box;opacity:.8}

/* ============ 响应式 ============ */
@media (max-width:960px){
  .hero-grid,.two-col,.contact-grid{grid-template-columns:1fr;gap:36px}
  .cards,.features,.mvv,.service-list,.process,.footer-inner{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:34px}
  .hero-visual{display:none}
}
@media (max-width:720px){
  .nav-links{
    position:fixed;top:70px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;
    padding:16px;gap:4px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);
    transform:translateY(-130%);transition:.3s;visibility:hidden;
  }
  .nav-links.open{transform:translateY(0);visibility:visible}
  .nav-links a{padding:12px 16px}
  .nav-toggle{display:flex;align-items:center;justify-content:center}
  section{padding:60px 0}
  .section-head h2{font-size:26px}
  .cards,.features,.mvv,.service-list,.process,.stats-grid,.footer-inner{grid-template-columns:1fr}
  .hero h1{font-size:28px}
  .page-banner h1{font-size:28px}
  .footer-bottom .container{flex-direction:column;text-align:center}
}