/* ============ 愿毕达官网 全局样式 ============ */
:root{
  --brand:#1666d6;
  --brand-dark:#0b1f3a;
  --brand-light:#3b82f6;
  --accent:#ff8a00;
  --accent-2:#ff6b35;
  --ink:#1f2a37;
  --muted:#5b6b7e;
  --line:#e6ebf2;
  --bg:#f5f7fb;
  --white:#fff;
  --radius:16px;
  --shadow:0 10px 30px rgba(13,40,80,.08);
  --shadow-lg:0 20px 50px rgba(13,40,80,.14);
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--white);line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(var(--maxw),92%);margin:0 auto}
.section{padding:84px 0}
.section-sm{padding:56px 0}
.eyebrow{
  display:inline-block;font-size:14px;font-weight:700;letter-spacing:2px;
  color:var(--brand);background:rgba(22,102,214,.08);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.section-title{font-size:34px;font-weight:800;letter-spacing:-.5px;line-height:1.25}
.section-sub{color:var(--muted);font-size:16px;margin-top:14px;max-width:680px}
.center{text-align:center}
.center .section-sub{margin-left:auto;margin-right:auto}
.btn{
  display:inline-flex;align-items:center;gap:8px;cursor:pointer;
  padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;
  border:0;transition:.25s;white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-light));color:#fff;box-shadow:0 8px 20px rgba(22,102,214,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(22,102,214,.45)}
.btn-accent{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 8px 20px rgba(255,107,53,.35)}
.btn-accent:hover{transform:translateY(-2px)}
.btn-ghost{background:#fff;color:var(--brand);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand)}

/* ===== 导航 ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;transition:.3s}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.nav.scrolled{background:rgba(255,255,255,.96);backdrop-filter:blur(10px);box-shadow:0 4px 20px rgba(13,40,80,.08)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:#fff}
.nav.scrolled .brand{color:var(--brand-dark)}
.brand img{height:44px;width:auto}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  padding:9px 16px;border-radius:10px;font-weight:600;font-size:15px;color:#eaf1ff;transition:.2s
}
.nav.scrolled .nav-links a{color:#33425a}
.nav-links a:hover{background:rgba(255,255,255,.15)}
.nav.scrolled .nav-links a:hover{background:rgba(22,102,214,.08)}
.nav-links a.active{color:#fff;background:var(--brand)}
.nav.scrolled .nav-links a.active{color:#fff}
.nav-cta{margin-left:8px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px}
.nav-toggle span{width:26px;height:3px;background:#fff;border-radius:3px;transition:.3s}
.nav.scrolled .nav-toggle span{background:var(--brand-dark)}

/* ===== Hero ===== */
.hero{
  position:relative;color:#fff;padding:160px 0 110px;overflow:hidden;
  background:radial-gradient(120% 120% at 80% 0%,#1e5fc0 0%,#0b1f3a 60%);
}
.hero::before{
  content:"";position:absolute;inset:0;opacity:.18;
  background-image:radial-gradient(circle at 20% 30%,#fff 1px,transparent 1px),
    radial-gradient(circle at 70% 60%,#fff 1px,transparent 1px);
  background-size:42px 42px;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-60px;width:460px;height:460px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));filter:blur(20px);opacity:.35;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{font-size:46px;line-height:1.2;font-weight:900;letter-spacing:-1px}
.hero h1 .hl{background:linear-gradient(135deg,#ffd27a,var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18px;margin:22px 0 32px;color:#d8e4fb;max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:30px;margin-top:46px}
.hero-stats .num{font-size:32px;font-weight:900}
.hero-stats .lbl{font-size:14px;color:#bcd0f3}
.hero-card{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  border-radius:24px;padding:30px;backdrop-filter:blur(10px);
}
.hero-card h3{font-size:18px;margin-bottom:18px}
.mini-form{display:flex;flex-direction:column;gap:12px}
.mini-form input,.mini-form select{
  padding:13px 15px;border-radius:12px;border:1px solid rgba(255,255,255,.25);
  background:rgba(255,255,255,.12);color:#fff;font-size:15px;outline:none
}
.mini-form input::placeholder{color:#c6d6f2}
.mini-form input:focus,.mini-form select:focus{border-color:var(--accent)}
select option{color:#1f2a37 !important;background:#fff !important}

/* ===== 业务卡片 ===== */
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.biz-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  transition:.3s;position:relative;overflow:hidden
}
.biz-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.biz-icon{width:60px;height:60px;border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:#fff}
.biz-card h3{font-size:20px;margin-bottom:10px}
.biz-card p{color:var(--muted);font-size:15px;min-height:66px}
.biz-card .more{margin-top:14px;color:var(--brand);font-weight:700;font-size:15px;display:inline-flex;gap:6px;align-items:center}
.biz-card .more svg{transition:.2s}
.biz-card:hover .more svg{transform:translateX(4px)}

/* ===== 通用栅格/特性 ===== */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat{background:var(--bg);border-radius:var(--radius);padding:28px;border:1px solid var(--line)}
.feat .ic{width:48px;height:48px;border-radius:12px;background:rgba(22,102,214,.1);color:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feat h4{font-size:18px;margin-bottom:8px}
.feat p{color:var(--muted);font-size:15px}

/* ===== 步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.step{position:relative;padding:28px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);text-align:center}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-18px;left:50%;transform:translateX(-50%);
  width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-light));color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow)}
.step h4{margin-top:14px;font-size:17px}
.step p{color:var(--muted);font-size:14px;margin-top:6px}

/* ===== 数据条 ===== */
.stats-band{background:linear-gradient(135deg,var(--brand-dark),#16407e);color:#fff;border-radius:24px;padding:46px 40px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stats-band .num{font-size:40px;font-weight:900}
.stats-band .lbl{color:#bcd0f3;margin-top:6px}

/* ===== CTA 横幅 ===== */
.cta{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-radius:24px;padding:54px 48px;text-align:center}
.cta h2{font-size:30px;margin-bottom:12px}
.cta p{opacity:.95;margin-bottom:24px;font-size:17px}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand-dark);color:#c4d2ea;padding:56px 0 24px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1.1fr;gap:30px}
.foot-brand img{height:80px;margin-bottom:14px}
.foot-brand p{font-size:14px;line-height:1.8;max-width:300px}
.foot-col h5{color:#fff;font-size:16px;margin-bottom:16px}
.foot-col a{display:block;color:#9fb3d4;font-size:14px;padding:6px 0;transition:.2s}
.foot-col a:hover{color:#fff}
.foot-qr img{width:160px;border-radius:12px;background:#fff;padding:8px;display:block;margin-bottom:8px}
.foot-qr span{color:#9fb3d4;font-size:13px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;text-align:center;font-size:13px;color:#7e93b8}

/* ===== 子页 Hero ===== */
.page-hero{background:radial-gradient(120% 120% at 80% 0%,#1e5fc0 0%,#0b1f3a 60%);color:#fff;padding:150px 0 70px;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-80px;bottom:-80px;width:320px;height:320px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));filter:blur(20px);opacity:.3}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:40px;font-weight:900}
.page-hero p{color:#d8e4fb;margin-top:14px;font-size:17px;max-width:620px}
.breadcrumb{font-size:14px;color:#bcd0f3;margin-bottom:14px}
.breadcrumb a:hover{color:#fff}

/* ===== 内容块 ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split .pic{height:340px;border-radius:24px;background:linear-gradient(135deg,#1e5fc0,#0b1f3a);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;color:#fff}
.split .pic svg{width:120px;height:120px;opacity:.9}
.list-check{list-style:none;margin-top:18px;display:grid;gap:12px}
.list-check li{display:flex;gap:12px;align-items:flex-start;font-size:16px}
.list-check li svg{flex:none;margin-top:3px;color:var(--brand)}

/* ===== 卡片列表（业务详情） ===== */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.service{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.3s}
.service:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.service .ic{width:50px;height:50px;border-radius:14px;background:rgba(22,102,214,.1);color:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.service h4{font-size:18px;margin-bottom:8px}
.service p{color:var(--muted);font-size:14px}

/* ===== 表单 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.form-card label{display:block;font-weight:600;margin:14px 0 6px;font-size:14px}
.form-card input,.form-card textarea,.form-card select{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;outline:none;font-family:inherit
}
.form-card input:focus,.form-card textarea:focus,.form-card select:focus{border-color:var(--brand)}
.form-card textarea{resize:vertical;min-height:110px}
.contact-info .item{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}
.contact-info .item:last-child{border-bottom:0}
.contact-info .ic{width:44px;height:44px;border-radius:12px;background:rgba(22,102,214,.1);color:var(--brand);display:flex;align-items:center;justify-content:center;flex:none}
.contact-info h5{font-size:15px;color:var(--muted);font-weight:600}
.contact-info p{font-size:17px;font-weight:700;margin-top:2px}

/* 动画 */
.reveal{opacity:0;transform:translateY(28px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr}
  .hero-card{order:-1}
  .biz-grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid,.service-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .stats-band{grid-template-columns:repeat(2,1fr)}
  .split,.contact-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .nav-links{
    position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;
    padding:14px 4%;gap:4px;box-shadow:var(--shadow);display:none
  }
  .nav-links.open{display:flex}
  .nav-links a{color:#33425a !important}
  .nav-links a.active{color:#fff !important}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .section{padding:56px 0}
  .section-title{font-size:26px}
  .hero h1{font-size:32px}
  .biz-grid,.feat-grid,.service-grid,.steps,.stats-band{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero-stats{gap:18px;flex-wrap:wrap}
}