/* ========== 基础与变量 ========== */
:root{
  --navy:#0f2c52;
  --navy-deep:#0a1f3c;
  --navy-soft:#1b3e6e;
  --gold:#c9a44c;
  --gold-soft:#e3c887;
  --ink:#1f2933;
  --muted:#5b6b7c;
  --bg:#f6f8fc;
  --bg-alt:#eef2f8;
  --white:#ffffff;
  --line:#e2e8f1;
  --radius:14px;
  --shadow:0 10px 30px rgba(15,44,82,.08);
  --shadow-lg:0 18px 50px rgba(15,44,82,.16);
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* ========== 按钮 ========== */
.btn{
  display:inline-block;padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  cursor:pointer;border:1.5px solid transparent;transition:.25s;letter-spacing:.3px;
}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-soft));color:#2a200a;box-shadow:0 8px 20px rgba(201,164,76,.32);}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(201,164,76,.45);}
.btn-ghost{border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.btn.full{width:100%;text-align:center;}

/* ========== 顶部导航 ========== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;transition:.3s;padding:14px 0;}
.site-header.scrolled{background:rgba(15,44,82,.96);backdrop-filter:blur(8px);box-shadow:0 6px 20px rgba(0,0,0,.18);padding:10px 0;}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:flex;align-items:center;gap:11px;color:#fff;}
.brand-logo{height:44px;width:auto;display:block;border-radius:8px;background:#fff;}
.brand-logo.footer-logo{height:38px;}
.brand-text{font-size:20px;font-weight:800;letter-spacing:1px;line-height:1;}
.brand-sub{font-size:12px;font-weight:500;opacity:.8;margin-left:6px;letter-spacing:2px;}
.nav-links{display:flex;gap:30px;}
.nav-links a{color:rgba(255,255,255,.88);font-size:15px;font-weight:500;position:relative;padding:6px 0;transition:.2s;}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--gold);transition:.25s;}
.nav-links a:hover,.nav-links a.active{color:#fff;}
.nav-links a:hover::after,.nav-links a.active::after{width:100%;}
.nav-cta{color:#2a200a !important;background:linear-gradient(135deg,var(--gold),var(--gold-soft));padding:10px 22px;font-size:14px;}
.nav-cta:hover{transform:translateY(-2px);}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;}
.nav-toggle span{width:26px;height:2.5px;background:#fff;border-radius:2px;transition:.3s;}

/* ========== Hero ========== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;color:#fff;overflow:hidden;}
.hero-bg{position:absolute;inset:0;background:
  radial-gradient(900px 500px at 80% 10%,rgba(201,164,76,.20),transparent 60%),
  radial-gradient(700px 600px at 0% 90%,rgba(27,62,110,.55),transparent 60%),
  linear-gradient(135deg,var(--navy-deep),var(--navy-soft));}
.hero-bg::after{content:"";position:absolute;inset:0;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:46px 46px;}
.hero-inner{position:relative;z-index:2;padding:120px 0 70px;width:100%;}
.hero-eyebrow{letter-spacing:3px;font-size:13px;color:var(--gold-soft);text-transform:uppercase;margin-bottom:18px;font-weight:600;}
.hero-title{font-size:clamp(32px,5vw,56px);font-weight:800;line-height:1.18;letter-spacing:1px;}
.hero-title .accent{color:var(--gold-soft);}
.hero-lead{margin:22px 0 32px;font-size:17px;max-width:620px;color:rgba(255,255,255,.86);}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:56px;max-width:760px;}
.stat{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:18px 16px;text-align:center;backdrop-filter:blur(4px);}
.stat-num{display:block;font-size:34px;font-weight:800;color:var(--gold-soft);line-height:1;}
.stat-label{display:block;margin-top:8px;font-size:13px;color:rgba(255,255,255,.8);}

/* ========== 通用 section ========== */
.section{padding:96px 0;}
.section-alt{background:var(--bg);}
.section-head{max-width:720px;margin:0 auto 52px;text-align:center;}
.section-tag{display:inline-block;color:var(--gold);font-weight:700;letter-spacing:2px;font-size:13px;margin-bottom:12px;}
.section-tag.light{color:var(--gold-soft);}
.section-title{font-size:clamp(24px,3.4vw,36px);font-weight:800;letter-spacing:.5px;color:var(--navy);}
.section-title.center{text-align:center;}
.section-title.light{color:#fff;}
.section-desc{margin-top:14px;color:var(--muted);font-size:16px;}
.link-more{display:inline-block;margin-top:18px;color:var(--navy);font-weight:600;border-bottom:2px solid var(--gold);padding-bottom:2px;}
.link-more:hover{color:var(--gold);}

/* ========== 关于 ========== */
.two-col{display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center;}
.about-text p{margin:14px 0;color:var(--muted);font-size:16px;}
.check-list{list-style:none;margin:20px 0 6px;}
.check-list li{position:relative;padding-left:30px;margin:10px 0;color:var(--ink);font-weight:500;}
.check-list li::before{content:"✓";position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:50%;background:var(--gold);color:#2a200a;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;}
.about-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.about-image{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg);background:var(--white);border:1px solid var(--line);}
.about-image img{width:100%;height:auto;display:block;}
.about-image .img-caption{padding:14px 16px;text-align:center;font-size:13px;color:var(--muted);background:var(--bg-alt);}
.mini-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:.25s;}
.mini-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--gold-soft);}
.mini-icon{font-size:30px;margin-bottom:12px;}
.mini-card h3{font-size:18px;color:var(--navy);margin-bottom:8px;}
.mini-card p{font-size:14px;color:var(--muted);}

/* ========== 服务 ========== */
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.service-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;box-shadow:var(--shadow);transition:.28s;position:relative;overflow:hidden;}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--gold);}
.service-card.featured{border-color:var(--gold-soft);background:linear-gradient(180deg,#fffdf7,#ffffff);}
.service-badge{position:absolute;top:16px;right:16px;background:var(--navy);color:var(--gold-soft);font-size:11px;font-weight:700;padding:4px 10px;border-radius:999px;letter-spacing:1px;}
.service-icon{font-size:34px;margin-bottom:14px;}
.service-card h3{font-size:20px;color:var(--navy);margin-bottom:10px;}
.service-card p{font-size:14px;color:var(--muted);margin-bottom:14px;}
.service-card ul{list-style:none;}
.service-card ul li{position:relative;padding-left:20px;font-size:14px;color:var(--ink);margin:7px 0;}
.service-card ul li::before{content:"•";position:absolute;left:4px;color:var(--gold);font-weight:800;}

/* ========== 优势 ========== */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.adv-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow);transition:.25s;}
.adv-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
.adv-num{font-size:30px;font-weight:800;color:var(--gold);opacity:.55;letter-spacing:1px;}
.adv-item h3{font-size:18px;color:var(--navy);margin:8px 0 10px;}
.adv-item p{font-size:14px;color:var(--muted);}

/* ========== 资质证照 ========== */
.certs-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px;max-width:960px;margin:0 auto;}
.cert-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s;text-align:center;}
.cert-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--gold-soft);}
.cert-card img{width:100%;height:auto;display:block;}
.cert-card figcaption{padding:16px;font-size:14px;color:var(--muted);background:var(--bg-alt);font-weight:500;}

/* ========== 团队 ========== */
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.team-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px 22px;text-align:center;box-shadow:var(--shadow);transition:.25s;}
.team-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
.avatar{width:72px;height:72px;border-radius:50%;margin:0 auto 16px;background:linear-gradient(135deg,var(--navy),var(--navy-soft));color:var(--gold-soft);font-size:28px;font-weight:800;display:flex;align-items:center;justify-content:center;}
.team-card h3{font-size:18px;color:var(--navy);}
.team-card .role{font-size:13px;color:var(--gold);font-weight:600;margin:6px 0 10px;}
.team-card .bio{font-size:13px;color:var(--muted);}
.creds{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:40px;}
.cred{background:var(--white);border:1px dashed var(--gold);color:var(--navy);font-size:13px;font-weight:600;padding:10px 18px;border-radius:999px;}

/* ========== 新闻 ========== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:.25s;display:flex;flex-direction:column;}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--gold-soft);}
.news-date{font-size:13px;color:var(--gold);font-weight:700;letter-spacing:1px;}
.news-card h3{font-size:18px;color:var(--navy);margin:10px 0 10px;line-height:1.5;}
.news-card p{font-size:14px;color:var(--muted);flex:1;}
.news-more{margin-top:14px;color:var(--navy);font-weight:600;font-size:14px;}
.news-card:hover .news-more{color:var(--gold);}

/* ========== 联系 ========== */
.section-contact{background:linear-gradient(135deg,var(--navy-deep),var(--navy-soft));color:#fff;position:relative;overflow:hidden;}
.section-contact::before{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(201,164,76,.22),transparent 70%);}
.contact-cols{gap:48px;}
.contact-lead{margin:16px 0 26px;color:rgba(255,255,255,.82);font-size:16px;max-width:480px;}
.contact-list{list-style:none;}
.contact-list li{display:flex;gap:16px;align-items:flex-start;margin:18px 0;}
.ci-ico{font-size:22px;flex:0 0 auto;width:42px;height:42px;border-radius:10px;background:rgba(201,164,76,.18);display:flex;align-items:center;justify-content:center;}
.contact-list strong{color:var(--gold-soft);font-size:14px;}
.contact-list div{font-size:15px;color:rgba(255,255,255,.9);line-height:1.5;}
.wechat-qr{margin-top:24px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);}
.wechat-qr p{color:rgba(255,255,255,.9);font-size:14px;margin-bottom:10px;}
.wechat-qr img{width:120px;height:auto;border-radius:10px;border:3px solid #fff;background:#fff;box-shadow:var(--shadow);}
.wechat-qr .qr-hint{font-size:12px;color:rgba(255,255,255,.65);margin-top:8px;margin-bottom:0;}
.contact-form{background:var(--white);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow-lg);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--navy);margin-bottom:7px;}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;color:var(--ink);background:#fbfcfe;transition:.2s;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--gold);background:#fff;box-shadow:0 0 0 3px rgba(201,164,76,.15);}
.field textarea{resize:vertical;}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;text-align:center;}

/* ========== 页脚 ========== */
.site-footer{background:var(--navy-deep);color:rgba(255,255,255,.78);padding-top:56px;}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:40px;}
.footer-about{margin-top:16px;font-size:14px;max-width:340px;color:rgba(255,255,255,.6);}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:1px;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.7);margin:9px 0;transition:.2s;}
.footer-col a:hover{color:var(--gold-soft);padding-left:4px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:13px;color:rgba(255,255,255,.5);}
.footer-bottom .container{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;}

/* ========== 滚动揭示 ========== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease;}
.reveal.in{opacity:1;transform:none;}

/* ========== 响应式 ========== */
@media(max-width:980px){
  .two-col{grid-template-columns:1fr;gap:36px;}
  .service-grid{grid-template-columns:repeat(2,1fr);}
  .adv-grid{grid-template-columns:repeat(2,1fr);}
  .team-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr 1fr;}
}
@media(max-width:680px){
  .nav-links{position:fixed;top:62px;left:0;right:0;background:var(--navy);flex-direction:column;gap:0;padding:10px 0;transform:translateY(-130%);transition:.3s;box-shadow:0 12px 24px rgba(0,0,0,.3);}
  .nav-links.open{transform:translateY(0);}
  .nav-links a{padding:14px 24px;width:100%;}
  .nav-links a::after{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .nav-toggle.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg);}
  .nav-toggle.open span:nth-child(2){opacity:0;}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg);}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:14px;margin-top:40px;}
  .service-grid,.adv-grid,.team-grid,.certs-grid{grid-template-columns:1fr;}
  .about-cards{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr;}
  .section{padding:70px 0;}
}