/* ============================================================
   中豫建安官网 - 全站样式
   主色：深蓝 #0a1f44 / 金色 #d9a441
   ============================================================ */
:root{
  --navy:#0a1f44; --navy2:#123063; --navy3:#1a3f7e;
  --gold:#d9a441; --gold2:#f3c669; --gold-d:#b9852a;
  --bg:#ffffff; --bg-alt:#f5f8fc;
  --text:#22314a; --muted:#68788f; --line:#e8edf4;
  --radius:14px;
  --shadow:0 10px 40px rgba(10,31,68,.08);
  --shadow-lg:0 24px 60px rgba(10,31,68,.16);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%}
.container{max-width:1180px;margin:0 auto;padding:0 22px}
em{font-style:normal;color:var(--gold);background:linear-gradient(135deg,var(--gold),var(--gold-d));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* ---------------- 顶部导航 ---------------- */
.header{position:fixed;top:0;left:0;right:0;z-index:100;transition:.3s;padding:14px 0}
.header.scrolled{background:rgba(10,31,68,.96);backdrop-filter:blur(12px);box-shadow:0 6px 24px rgba(0,0,0,.18);padding:8px 0}
.nav-wrap{display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:10px;color:#fff}
.logo-mark{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--gold),var(--gold-d));display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:900;color:#fff;box-shadow:0 6px 18px rgba(217,164,65,.4);flex-shrink:0}
.logo-text{font-size:20px;font-weight:800;letter-spacing:2px;line-height:1.1}
.logo-text small{display:block;font-size:11px;font-weight:400;letter-spacing:4px;color:var(--gold2)}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{color:rgba(255,255,255,.85);padding:8px 14px;border-radius:8px;font-size:15px;transition:.2s}
.nav a:hover,.nav a.active{color:var(--gold2);background:rgba(255,255,255,.08)}
.nav-phone{display:flex;align-items:center;gap:7px;color:#fff;font-weight:800;font-size:16px;padding:9px 18px;border:1px solid rgba(255,255,255,.35);border-radius:30px;transition:.2s;white-space:nowrap}
.nav-phone:hover{background:var(--gold);border-color:var(--gold)}
.menu-btn{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer;margin-left:auto}

/* ---------------- 首屏 ---------------- */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;background:radial-gradient(1200px 800px at 80% -10%,#1d4a94 0%,transparent 55%),linear-gradient(150deg,#081733 0%,var(--navy) 45%,var(--navy2) 100%);padding:130px 0 0;overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.grid-lines{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(ellipse at 50% 40%,#000 30%,transparent 75%)}
.orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;animation:float 9s ease-in-out infinite}
.orb-1{width:420px;height:420px;background:#2b5bb0;top:-120px;right:6%}
.orb-2{width:300px;height:300px;background:var(--gold);bottom:-100px;left:-60px;opacity:.22;animation-delay:-4s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-28px)}}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center;padding-bottom:90px}
.hero-badge{display:inline-block;background:rgba(217,164,65,.14);border:1px solid rgba(243,198,105,.4);color:var(--gold2);padding:7px 18px;border-radius:30px;font-size:13.5px;letter-spacing:1px;margin-bottom:24px}
.hero h1{color:#fff;font-size:clamp(34px,4.6vw,56px);line-height:1.22;letter-spacing:2px;margin-bottom:22px;text-shadow:0 4px 30px rgba(0,0,0,.3)}
.hero-sub{color:rgba(255,255,255,.78);font-size:16.5px;margin-bottom:34px}
.hero-sub .gold{color:var(--gold2);font-size:18px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:26px}
.btn-gold{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,var(--gold2),var(--gold) 55%,var(--gold-d));color:#fff;font-weight:800;font-size:16px;padding:15px 34px;border-radius:40px;box-shadow:0 12px 32px rgba(217,164,65,.42);transition:.25s;border:none;cursor:pointer;letter-spacing:1px}
.btn-gold:hover{transform:translateY(-3px);box-shadow:0 18px 44px rgba(217,164,65,.55)}
.btn-gold.full{width:100%}
.btn-ghost{display:inline-flex;align-items:center;gap:9px;color:#fff;font-weight:700;font-size:16px;padding:14px 30px;border-radius:40px;border:1.5px solid rgba(255,255,255,.4);transition:.25s}
.btn-ghost:hover{border-color:var(--gold2);color:var(--gold2)}
.hero-chips{display:flex;gap:18px;flex-wrap:wrap;color:rgba(255,255,255,.65);font-size:13.5px}
.hero-card{background:rgba(255,255,255,.985);border-radius:20px;padding:34px 32px;box-shadow:var(--shadow-lg);animation:fadeUp .8s ease both .2s}
.hero-card h3{color:var(--navy);font-size:19px;margin-bottom:18px;text-align:center}
.hero-card h3::after{content:"";display:block;width:44px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--gold),var(--gold-d));margin:10px auto 0}
.hero-card input,.hero-card select,.contact-form input,.contact-form textarea{width:100%;padding:13px 16px;border:1.5px solid var(--line);border-radius:10px;font-size:14.5px;margin-bottom:13px;font-family:inherit;outline:none;transition:.2s;background:#fbfcfe}
.hero-card input:focus,.hero-card select:focus,.contact-form input:focus,.contact-form textarea:focus{border-color:var(--gold);background:#fff;box-shadow:0 0 0 4px rgba(217,164,65,.12)}
.form-tip{text-align:center;color:#9aa8bc;font-size:12.5px;margin-top:10px}
.hero-stats{position:relative;background:rgba(255,255,255,.06);border-top:1px solid rgba(255,255,255,.12);backdrop-filter:blur(8px)}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);padding:26px 22px}
.stat{text-align:center;color:#fff}
.stat b{font-size:38px;font-weight:900;color:var(--gold2);font-variant-numeric:tabular-nums}
.stat span{font-size:20px;color:var(--gold2);font-weight:800;margin-left:2px}
.stat i{display:block;font-style:normal;color:rgba(255,255,255,.65);font-size:13.5px;margin-top:2px;letter-spacing:2px}

/* ---------------- 通用区块 ---------------- */
.section{padding:90px 0}
.section-alt{background:var(--bg-alt)}
.sec-head{text-align:center;max-width:640px;margin:0 auto 54px}
.sec-tag{display:inline-block;color:var(--gold-d);background:rgba(217,164,65,.12);border:1px solid rgba(217,164,65,.35);padding:4px 16px;border-radius:20px;font-size:13px;letter-spacing:3px;margin-bottom:14px}
.sec-tag.light{color:var(--gold2);background:rgba(217,164,65,.15);border-color:rgba(243,198,105,.4)}
.sec-head h2{font-size:clamp(26px,3.2vw,36px);color:var(--navy);letter-spacing:1px;margin-bottom:12px}
.sec-head p{color:var(--muted)}
.sec-more{text-align:center;margin-top:38px}
.btn-line{display:inline-block;padding:12px 32px;border:1.5px solid var(--gold);color:var(--gold-d);border-radius:34px;font-weight:700;transition:.25s}
.btn-line:hover{background:var(--gold);color:#fff;box-shadow:0 10px 26px rgba(217,164,65,.35)}

/* ---------------- 服务项目 ---------------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;transition:.3s;position:relative;overflow:hidden}
.svc-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--gold),var(--gold2));transform:scaleX(0);transform-origin:left;transition:.35s}
.svc-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:transparent}
.svc-card:hover::before{transform:scaleX(1)}
.svc-icon{font-size:36px;margin-bottom:16px}
.svc-card h3{font-size:19px;color:var(--navy);margin-bottom:10px}
.svc-card>p{color:var(--muted);font-size:14px;margin-bottom:16px}
.svc-card ul{list-style:none}
.svc-card li{font-size:13.5px;color:#41526e;padding:5px 0 5px 22px;position:relative}
.svc-card li::before{content:"";position:absolute;left:2px;top:13px;width:9px;height:9px;border-radius:3px;background:linear-gradient(135deg,var(--gold),var(--gold2))}

/* ---------------- 流程 ---------------- */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;counter-reset:s}
.step{background:#fff;border-radius:var(--radius);padding:26px 20px;text-align:center;border:1px solid var(--line);transition:.3s;position:relative}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(217,164,65,.5)}
.step b{display:inline-block;font-size:26px;font-weight:900;background:linear-gradient(135deg,var(--gold2),var(--gold-d));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:10px}
.step h4{font-size:16px;color:var(--navy);margin-bottom:8px}
.step p{font-size:12.5px;color:var(--muted);line-height:1.65}

/* ---------------- 案例 ---------------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:linear-gradient(160deg,#fff 70%,#fbf6ec);border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.3s}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.case-top{display:flex;justify-content:space-between;margin-bottom:14px}
.case-cat{background:rgba(217,164,65,.14);color:var(--gold-d);font-size:12.5px;font-weight:700;padding:3px 13px;border-radius:16px}
.case-city{color:#9aa8bc;font-size:13px}
.case-card h3{font-size:18px;color:var(--navy);margin-bottom:10px}
.case-card>p{color:var(--muted);font-size:14px;margin-bottom:18px}
.case-foot{display:flex;gap:14px;border-top:1px dashed var(--line);padding-top:14px;color:var(--gold-d);font-size:13px;font-weight:700}

/* ---------------- 新闻 ---------------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;min-height:120px}
.news-loading{grid-column:1/-1;text-align:center;color:var(--muted);padding:50px 0}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.news-cover{height:170px;background:linear-gradient(135deg,var(--navy) 0%,var(--navy3) 60%,#2b5bb0 100%);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.85);font-size:34px;font-weight:800;letter-spacing:4px;position:relative;overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover}
.news-body{padding:22px;flex:1;display:flex;flex-direction:column}
.news-meta{display:flex;gap:10px;align-items:center;font-size:12.5px;color:#9aa8bc;margin-bottom:10px}
.news-cat{background:rgba(47,111,214,.1);color:#2f6fd6;padding:1px 10px;border-radius:12px;font-weight:600}
.news-top{background:rgba(217,164,65,.15);color:var(--gold-d);padding:1px 10px;border-radius:12px;font-weight:600}
.news-body h3{font-size:16.5px;color:var(--navy);line-height:1.5;margin-bottom:9px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a:hover{color:var(--gold-d)}
.news-body p{font-size:13.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-more{margin-top:14px;color:var(--gold-d);font-size:13.5px;font-weight:700}
.pager{display:flex;justify-content:center;gap:8px;margin-top:40px;flex-wrap:wrap}
.pager a,.pager span.cur{min-width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line);background:#fff;font-weight:700;padding:0 14px;color:var(--text)}
.pager span.cur{background:var(--navy);border-color:var(--navy);color:#fff}
.pager a:hover{border-color:var(--gold);color:var(--gold-d)}

/* ---------------- 文章页 ---------------- */
.article-hero{background:linear-gradient(150deg,#081733,var(--navy) 50%,var(--navy2));padding:150px 0 60px;color:#fff}
.article-hero .cat{color:var(--gold2);font-size:13.5px;letter-spacing:2px;margin-bottom:14px;display:block}
.article-hero h1{font-size:clamp(24px,3.4vw,36px);line-height:1.4;max-width:860px;margin-bottom:16px}
.article-hero .meta{color:rgba(255,255,255,.6);font-size:13.5px}
.article-wrap{max-width:860px;margin:-30px auto 0;padding:0 22px 90px}
.article-body{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:46px 50px;font-size:16px;line-height:2;color:#33455f}
.article-body h2{font-size:22px;color:var(--navy);margin:30px 0 14px;padding-left:14px;border-left:4px solid var(--gold)}
.article-body h3{font-size:18px;color:var(--navy);margin:24px 0 10px}
.article-body p{margin-bottom:14px}
.article-body ul,.article-body ol{padding-left:26px;margin-bottom:14px}
.article-body li{margin-bottom:6px}
.article-body blockquote{background:#fdf8ee;border-left:4px solid var(--gold);padding:14px 20px;border-radius:0 10px 10px 0;margin:16px 0;color:#6b5a33}
.article-body img{border-radius:10px;margin:10px 0}
.back-link{display:inline-block;margin-bottom:18px;color:var(--muted);font-size:14px}
.back-link:hover{color:var(--gold-d)}

/* ---------------- 关于 ---------------- */
.about-wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:center}
.about-text h2{font-size:clamp(24px,3vw,32px);color:var(--navy);margin:10px 0 18px}
.about-text>p{color:var(--muted);margin-bottom:20px}
.about-list{list-style:none;margin-bottom:28px}
.about-list li{padding:9px 0 9px 34px;position:relative;color:#41526e;border-bottom:1px dashed var(--line)}
.about-list li::before{content:"✔";position:absolute;left:4px;color:var(--gold);font-weight:900}
.about-side{display:flex;flex-direction:column;gap:20px}
.about-box{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px}
.about-box h4{color:var(--navy);font-size:16px;margin-bottom:10px}
.about-box p{color:var(--muted);font-size:14px}
.about-box.gold-box{background:linear-gradient(150deg,var(--navy),var(--navy2));border:none}
.about-box.gold-box h4,.about-box.gold-box p{color:#fff}
.about-box.gold-box .big-tel{font-size:30px;font-weight:900;color:var(--gold2);letter-spacing:1px;margin:6px 0}
.about-box.gold-box p:last-child{color:rgba(255,255,255,.65);font-size:13px}

/* ---------------- 联系 ---------------- */
.section-contact{background:radial-gradient(900px 500px at 15% 20%,#1d4a94 0%,transparent 60%),linear-gradient(150deg,#081733,var(--navy) 55%,var(--navy2))}
.contact-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.contact-text h2{color:#fff;font-size:clamp(26px,3.4vw,38px);margin:12px 0 16px;letter-spacing:1px}
.contact-text>p{color:rgba(255,255,255,.75);margin-bottom:26px}
.contact-ways{display:flex;flex-direction:column;gap:13px;color:rgba(255,255,255,.85);font-size:15px}
.contact-ways b{color:var(--gold2);font-size:17px}
.contact-form{background:#fff;border-radius:18px;padding:36px 34px;box-shadow:var(--shadow-lg)}
.contact-form h3{color:var(--navy);font-size:20px;text-align:center;margin-bottom:20px}
.contact-form textarea{resize:vertical}

/* ---------------- 页脚 ---------------- */
.footer{background:#071530;color:rgba(255,255,255,.65);padding:60px 0 0}
.foot-wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.foot-brand .logo{margin-bottom:14px}
.foot-brand p{font-size:13.5px;line-height:2}
.foot-col h5{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:1px}
.foot-col a,.foot-col span{display:block;padding:5px 0;font-size:13.5px;transition:.2s}
.foot-col a:hover{color:var(--gold2)}
.foot-bar{border-top:1px solid rgba(255,255,255,.08);padding:18px 22px;text-align:center;font-size:12.5px;color:rgba(255,255,255,.4)}

/* ---------------- 悬浮获客条 ---------------- */
.float-bar{position:fixed;right:18px;bottom:26px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-btn{width:56px;height:56px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;border:none;cursor:pointer;font-size:10.5px;font-weight:700;color:#fff;box-shadow:0 10px 26px rgba(10,31,68,.3);transition:.25s}
.float-btn.tel{background:linear-gradient(135deg,#e2543f,#c0392b)}
.float-btn.msg{background:linear-gradient(135deg,var(--gold2),var(--gold-d))}
.float-btn.top{background:#33455f;display:none}
.float-btn:hover{transform:translateY(-4px)}
.float-btn span:last-child{font-size:10px}

/* ---------------- 动画 ---------------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
.reveal{opacity:0;transform:translateY(34px);transition:.7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------------- 响应式 ---------------- */
@media(max-width:1024px){
  .svc-grid,.case-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .about-wrap,.contact-wrap{grid-template-columns:1fr;gap:36px}
  .foot-wrap{grid-template-columns:repeat(2,1fr)}
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:rgba(10,31,68,.98);flex-direction:column;padding:14px}
  .nav.open{display:flex}
  .menu-btn{display:block}
  .nav-phone{display:none}
}
@media(max-width:640px){
  .svc-grid,.case-grid,.news-grid,.steps{grid-template-columns:1fr}
  .stats-row{grid-template-columns:repeat(2,1fr);gap:18px 0}
  .hero{padding-top:110px}
  .section{padding:64px 0}
  .article-body{padding:30px 22px}
  .foot-wrap{grid-template-columns:1fr}
}