/* tuize.com 推泽网络 - 企业站黑金高端主题 */
:root{
  --bg:#0a0e17;          /* 主背景 深黑蓝 */
  --bg-2:#0f1522;        /* 次级背景 */
  --bg-3:#141b2d;        /* 卡片背景 */
  --line:rgba(255,255,255,.08);  /* 分割线 */
  --gold:#d4a017;        /* 主金 */
  --gold-2:#f0c33c;      /* 亮金 */
  --gold-grad:linear-gradient(135deg,#f0c33c,#d4a017 60%,#a97b0a);
  --txt:#e8edf5;         /* 主文字 */
  --txt-2:#9aa7bd;       /* 次级文字 */
  --txt-3:#6b7a93;       /* 弱文字 */
  --shadow:0 20px 50px rgba(0,0,0,.45);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:"Microsoft YaHei","PingFang SC","Segoe UI",sans-serif;background:var(--bg);color:var(--txt);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}

/* ===== 网格底纹（科技感） ===== */
.bg-grid{position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 75%);
}
main,.hero,.section,.stats,.cta,.footer{position:relative;z-index:1;}

/* ===== 按钮 ===== */
.btn{display:inline-block;padding:13px 30px;border-radius:8px;font-weight:700;font-size:15px;transition:all .3s;cursor:pointer;border:none;}
.btn-gold{background:var(--gold-grad);color:#14171f;box-shadow:0 4px 18px rgba(212,160,23,.35);}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 8px 26px rgba(212,160,23,.5);}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.25);color:var(--txt);}
.btn-ghost:hover{border-color:var(--gold-2);color:var(--gold-2);transform:translateY(-2px);}
.btn-lg{padding:16px 38px;font-size:16px;border-radius:10px;}

/* ===== 导航（毛玻璃） ===== */
.nav{position:sticky;top:0;z-index:100;background:rgba(10,14,23,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px;}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:23px;font-weight:800;letter-spacing:1px;}
.nav-logo .logo-mark{width:34px;height:34px;border-radius:8px;background:var(--gold-grad);display:flex;align-items:center;justify-content:center;font-size:18px;color:#14171f;font-weight:900;box-shadow:0 2px 10px rgba(212,160,23,.4);}
.nav-logo b{color:#fff;}
.nav-logo span{background:var(--gold-grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.nav-links{display:flex;gap:6px;}
.nav-links a{padding:9px 16px;border-radius:8px;color:var(--txt-2);font-size:15px;transition:all .25s;position:relative;}
.nav-links a:hover,.nav-links a.active{color:var(--gold-2);background:rgba(212,160,23,.1);}
.nav-phone{font-weight:700;color:var(--gold-2);font-size:15px;letter-spacing:.5px;padding:9px 16px;border:1px solid rgba(212,160,23,.4);border-radius:8px;transition:all .25s;}
.nav-phone:hover{background:rgba(212,160,23,.14);}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;}
.hamburger span{width:24px;height:2px;background:var(--txt);border-radius:2px;}

/* ===== Hero ===== */
.hero{min-height:600px;display:flex;align-items:center;background:
  radial-gradient(ellipse 70% 60% at 15% 15%,rgba(212,160,23,.12),transparent 55%),
  radial-gradient(ellipse 60% 50% at 85% 80%,rgba(60,80,140,.25),transparent 60%),
  linear-gradient(180deg,#0c111d 0%,#0a0e17 100%);
  overflow:hidden;}
.hero-inner{display:flex;align-items:center;gap:70px;padding:80px 24px;}
.hero-copy{flex:1.1;min-width:300px;}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:30px;background:rgba(212,160,23,.12);border:1px solid rgba(212,160,23,.3);color:var(--gold-2);font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:22px;}
.hero-tag::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--gold-2);animation:pulse 2s infinite;}
.hero h1{font-size:50px;font-weight:900;line-height:1.25;margin-bottom:20px;letter-spacing:-1px;}
.hero h1 .grad{border-radius:2px;background:var(--gold-grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero h1 .stroke{color:transparent;-webkit-text-stroke:1.5px rgba(255,255,255,.28);}
.hero-sub{font-size:18px;color:var(--txt-2);max-width:560px;margin-bottom:34px;}
.hero-btns{display:flex;gap:16px;align-items:center;}
.hero-points{display:flex;gap:28px;margin-top:44px;flex-wrap:wrap;}
.hero-point{display:flex;align-items:center;gap:10px;color:var(--txt-2);font-size:14px;}
.hero-point .hp{width:40px;height:40px;border-radius:10px;background:var(--bg-3);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:19px;}
/* Hero 视觉面板 */
.hero-visual{flex:1;min-width:300px;max-width:520px;}
.hviz{background:var(--bg-3);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow);position:relative;}
.hviz-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.hviz-dots{display:flex;gap:6px;}
.hviz-dots span{width:12px;height:12px;border-radius:50%;}
.hviz-dots span:nth-child(1){background:#ff5f57}.hviz-dots span:nth-child(2){background:#febc2e}.hviz-dots span:nth-child(3){background:#28c840}
.hviz-url{font-size:12px;color:var(--txt-3);background:var(--bg);padding:5px 12px;border-radius:6px;border:1px solid var(--line);}
.hviz-body{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.hviz-card{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:16px;}
.hviz-card .hc-ic{font-size:26px;margin-bottom:10px;}
.hviz-card .hc-bar{height:8px;border-radius:4px;background:rgba(255,255,255,.08);margin-top:8px;overflow:hidden;}
.hviz-card .hc-bar i{display:block;height:100%;background:var(--gold-grad);border-radius:4px;}
.hviz-card .hc-lab{font-size:12px;color:var(--txt-3);margin-top:6px;}
.hviz-float{position:absolute;background:var(--bg-3);border:1px solid var(--line);border-radius:14px;padding:12px 16px;box-shadow:var(--shadow);display:flex;align-items:center;gap:10px;}
.hviz-float.f1{top:-20px;right:-16px;animation:floatY 5s ease-in-out infinite;}
.hviz-float.f2{bottom:-20px;left:-16px;animation:floatY 5s ease-in-out 1s infinite;}
.hviz-float .f-ic{font-size:24px;}
.hviz-float .f-tx b{display:block;font-size:17px;color:var(--gold-2);}
.hviz-float .f-tx span{font-size:12px;color:var(--txt-3);}

/* ===== 通用滚动渐显 ===== */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .9s cubic-bezier(.16,1,.3,1),transform .9s cubic-bezier(.16,1,.3,1);will-change:opacity,transform;}
.reveal.visible{opacity:1;transform:none;}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}.d4{transition-delay:.4s}
.h-anim{animation:fadeUp 1s cubic-bezier(.16,1,.3,1) .05s both;}
.h-anim2{animation:fadeUp 1s cubic-bezier(.16,1,.3,1) .2s both;}
.h-anim3{animation:fadeUp 1s cubic-bezier(.16,1,.3,1) .35s both;}
@keyframes fadeUp{from{opacity:0;transform:translateY(36px)}to{opacity:1;transform:none}}
@keyframes fadeRight{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:none}}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
@keyframes gradMove{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}

/* ===== 分区标题 ===== */
.section{padding:96px 0;}
.section-head{text-align:center;max-width:680px;margin:0 auto 60px;}
.section-eyebrow{display:inline-block;color:var(--gold-2);font-size:13px;letter-spacing:3px;font-weight:600;text-transform:uppercase;margin-bottom:14px;}
.section-title{font-size:38px;font-weight:800;letter-spacing:-.5px;margin-bottom:16px;}
.section-sub{color:var(--txt-2);font-size:17px;}
.divider{width:60px;height:3px;background:var(--gold-grad);border-radius:2px;margin:20px auto 0;}

/* ===== 服务卡片 ===== */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.service-card{background:linear-gradient(180deg,var(--bg-3),var(--bg-2));border:1px solid var(--line);border-radius:16px;padding:30px 26px;transition:all .4s;position:relative;overflow:hidden;}
.service-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gold-grad);transform:scaleX(0);transform-origin:left;transition:transform .4s;}
.service-card:hover::before{transform:scaleX(1);}
.service-card:hover{transform:translateY(-10px);border-color:rgba(212,160,23,.35);box-shadow:var(--shadow);}
.service-ic{width:56px;height:56px;border-radius:14px;background:rgba(212,160,23,.12);border:1px solid rgba(212,160,23,.25);display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:20px;transition:all .4s;}
.service-card:hover .service-ic{transform:scale(1.12) rotate(-6deg);background:var(--gold-grad);}
.service-card h3{font-size:20px;margin-bottom:12px;}
.service-card p{color:var(--txt-2);font-size:14.5px;margin-bottom:18px;}
.service-tags{display:flex;flex-wrap:wrap;gap:8px;}
.service-tags span{font-size:12px;color:var(--txt-3);background:var(--bg);border:1px solid var(--line);padding:4px 10px;border-radius:20px;}
.s-link{color:var(--gold-2);font-size:14px;font-weight:600;margin-top:18px;display:inline-flex;align-items:center;gap:6px;transition:gap .3s;}
.s-link:hover{gap:10px;}

/* ===== 统计 ===== */
.stats{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.stats-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:60px 0;}
.stat{text-align:center;}
.stat-num{font-size:46px;font-weight:900;background:var(--gold-grad);-webkit-background-clip:text;background-clip:text;color:transparent;display:inline-block;}
.stat-label{color:var(--txt-2);font-size:15px;margin-top:6px;letter-spacing:1px;}

/* ===== 案例 ===== */
.portfolio-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.portfolio-card{background:var(--bg-3);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:all .4s;display:block;}
.portfolio-card:hover{transform:translateY(-8px);border-color:rgba(212,160,23,.4);box-shadow:var(--shadow);}
.p-thumb{position:relative;height:180px;display:flex;align-items:center;justify-content:center;font-size:74px;background:
  radial-gradient(circle at 30% 30%,rgba(212,160,23,.15),transparent 60%),
  linear-gradient(160deg,var(--bg-2),var(--bg));}
.p-thumb .p-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(10,14,23,.85));opacity:0;transition:opacity .4s;display:flex;align-items:flex-end;padding:18px;}
.portfolio-card:hover .p-overlay{opacity:1;}
.p-overlay .p-view{color:var(--gold-2);font-size:14px;font-weight:600;display:flex;align-items:center;gap:8px;}
.p-body{padding:20px 22px;}
.p-body h3{font-size:18px;margin-bottom:8px;color:#fff;}
.p-body p{color:var(--txt-2);font-size:14px;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.tag{display:inline-block;font-size:12px;color:var(--gold-2);background:rgba(212,160,23,.1);border:1px solid rgba(212,160,23,.25);padding:3px 10px;border-radius:20px;}

/* ===== 流程 ===== */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:proc;}
.step{background:var(--bg-3);border:1px solid var(--line);border-radius:16px;padding:28px 22px;position:relative;transition:all .35s;text-align:center;}
.step:hover{transform:translateY(-6px);border-color:rgba(212,160,23,.4);}
.step .num{width:40px;height:40px;border-radius:10px;background:var(--gold-grad);color:#14171f;font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;}
.step .step-ic{font-size:34px;margin-bottom:12px;}
.step h4{font-size:17px;margin-bottom:8px;}
.step p{font-size:13.5px;color:var(--txt-2);}

/* ===== CTA ===== */
.cta{padding:90px 0;background:
  radial-gradient(ellipse 60% 80% at 50% 0%,rgba(212,160,23,.16),transparent 60%),
  var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center;}
.cta h2{font-size:38px;font-weight:800;margin-bottom:14px;}
.cta p{color:var(--txt-2);font-size:17px;margin-bottom:34px;}
.cta .btns{display:flex;gap:18px;justify-content:center;}
.cta-note{margin-top:22px;color:var(--txt-3);font-size:14px;}

/* ===== 页脚 ===== */
.footer{background:#070a11;border-top:1px solid var(--line);padding:70px 0 30px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;margin-bottom:50px;}
.footer-grid h4{font-size:16px;margin-bottom:18px;color:#fff;}
.footer-grid p,.footer-grid a{color:var(--txt-3);font-size:14px;line-height:2.1;display:block;transition:color .25s;}
.footer-grid a:hover{color:var(--gold-2);}
.footer-brand p{max-width:320px;color:var(--txt-3);font-size:14px;margin-top:14px;}
.footer-phone{font-size:22px;font-weight:800;color:var(--gold-2);}
.footer-bottom{border-top:1px solid var(--line);padding-top:24px;text-align:center;color:var(--txt-3);font-size:13px;}

/* ===== 回到顶部 ===== */
.to-top{position:fixed;right:28px;bottom:32px;width:46px;height:46px;border-radius:50%;background:var(--gold-grad);color:#14171f;border:none;font-size:20px;cursor:pointer;box-shadow:0 6px 20px rgba(212,160,23,.4);opacity:0;transform:translateY(20px);transition:all .3s;z-index:200;font-weight:800;}
.to-top.show{opacity:1;transform:translateY(0);}
.to-top:hover{transform:translateY(-3px);}

/* ===== 内页 ===== */
.crumb{font-size:14px;color:var(--txt-3);padding:28px 0;}
.crumb a{color:var(--txt-2);}
.crumb a:hover{color:var(--gold-2);}
.page-head{text-align:center;padding:60px 0 20px;}
.page-head h1{font-size:40px;font-weight:800;margin-bottom:14px;}
.page-head p{color:var(--txt-2);max-width:640px;margin:0 auto;}

/* 服务详情 */
.detail-wrap{display:grid;grid-template-columns:1fr 320px;gap:40px;}
.detail-main{background:var(--bg-3);border:1px solid var(--line);border-radius:16px;padding:36px;}
.detail-main h1{font-size:30px;margin-bottom:20px;}
.detail-main h2{font-size:22px;color:var(--gold-2);margin:30px 0 14px;}
.detail-body p{color:var(--txt-2);font-size:15.5px;margin-bottom:14px;line-height:1.9;}
.detail-side .side-card{background:var(--bg-3);border:1px solid var(--line);border-radius:16px;padding:26px;margin-bottom:20px;}
.side-card h3{font-size:16px;margin-bottom:16px;color:#fff;}
.side-card .hot-phone{font-size:26px;font-weight:800;color:var(--gold-2);margin-bottom:10px;}
.side-card a{display:block;color:var(--txt-2);padding:8px 0;border-bottom:1px solid var(--line);transition:all .2s;}
.side-card a:hover{color:var(--gold-2);padding-left:6px;}
.bullets{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0;}
.bullets li{list-style:none;display:flex;align-items:center;gap:10px;color:var(--txt-2);font-size:14.5px;padding:10px 12px;background:var(--bg);border:1px solid var(--line);border-radius:8px;}
.bullets li::before{content:'✓';color:var(--gold-2);font-weight:800;}

/* ===== 表单 ===== */
.quote-form{max-width:640px;margin:0 auto;background:var(--bg-3);border:1px solid var(--line);border-radius:16px;padding:40px;}
.quote-form .f-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px;}
.quote-form label{display:block;font-size:13px;color:var(--txt-2);margin-bottom:7px;}
.quote-form input,.quote-form select,.quote-form textarea{width:100%;padding:12px 14px;border-radius:8px;border:1px solid var(--line);background:var(--bg);color:var(--txt);font-size:15px;font-family:inherit;transition:border-color .3s;outline:none;}
.quote-form input:focus,.quote-form select:focus,.quote-form textarea:focus{border-color:var(--gold-2);}
.quote-form textarea{resize:vertical;min-height:110px;}
.quote-form .f-full{margin-bottom:16px;}
.form-msg{text-align:center;padding:14px;border-radius:8px;margin-bottom:16px;font-weight:600;}
.form-msg.ok{background:rgba(40,200,64,.12);color:#4ade80;border:1px solid rgba(40,200,64,.3);}
.form-msg.err{background:rgba(255,95,87,.12);color:#ff8a85;border:1px solid rgba(255,95,87,.3);}

/* ===== 响应式 ===== */
@media(max-width:992px){
  .grid,.portfolio-grid{grid-template-columns:1fr 1fr;}
  .process{grid-template-columns:1fr 1fr;}
  .stats-inner{grid-template-columns:1fr 1fr;gap:32px;}
  .hero h1{font-size:40px;}
  .hero-inner{flex-direction:column;gap:50px;padding:60px 24px;}
  .detail-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:640px){
  .grid,.portfolio-grid,.process{grid-template-columns:1fr;}
  .stats-inner{grid-template-columns:1fr 1fr;}
  .section{padding:60px 0;}
  .section-title{font-size:30px;}
  .hero h1{font-size:34px;}
  .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:var(--bg);flex-direction:column;padding:16px 24px;border-top:1px solid var(--line);}
  .nav-links.open{display:flex;}
  .nav-links a{padding:13px 0;}
  .nav-phone{display:none;}
  .hamburger{display:flex;}
  .quote-form .f-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-btns{flex-wrap:wrap;}
}

/* ===== 问答样式 ===== */
.qa-list{display:flex;flex-direction:column;gap:16px;}
.qa-item{display:block;background:var(--bg-3);border:1px solid var(--line);border-radius:14px;padding:22px 24px;transition:all .3s;}
.qa-item:hover{transform:translateX(6px);border-color:rgba(212,160,23,.4);box-shadow:var(--shadow);}
.qa-q{font-size:17px;font-weight:700;color:#fff;display:flex;gap:12px;align-items:flex-start;margin-bottom:10px;}
.qa-badge{background:var(--gold-grad);color:#14171f;width:26px;height:26px;border-radius:7px;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;flex-shrink:0;margin-top:2px;}
.qa-a{color:var(--txt-2);font-size:14.5px;line-height:1.8;margin-bottom:12px;}
.qa-more{color:var(--gold-2);font-weight:600;margin-left:8px;}
.qa-meta{display:flex;align-items:center;gap:14px;border-top:1px solid var(--line);padding-top:12px;}
/* 友情链接（黑金主题） */
.footer-links{border-top:1px solid var(--line);padding:18px 0;font-size:13px;color:var(--txt-3);}
.footer-links span{color:var(--gold-2);font-weight:600;margin-right:6px;}
.footer-links a{color:var(--txt-2);margin:0 8px;display:inline-block;line-height:2;transition:color .2s;}
.footer-links a:hover{color:var(--gold-2);text-decoration:underline;}
/* 课程卡片 */
.courses-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px;}
.course-card{background:var(--bg-2);border:1px solid var(--line);border-radius:16px;padding:26px;transition:transform .3s,border-color .3s,box-shadow .3s;display:flex;flex-direction:column;gap:14px;}
.course-card:hover{transform:translateY(-6px);border-color:var(--gold-2);box-shadow:0 18px 40px rgba(212,160,23,.12);}
.course-top{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);}
.course-ic{font-size:20px;}
.course-service{letter-spacing:.3px;}
.course-card h3{font-size:19px;color:var(--txt-1);margin:0;}
.course-summary{font-size:14px;color:var(--txt-2);line-height:1.7;flex:1;margin:0;}
.course-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.badge{font-size:12px;padding:3px 10px;border-radius:20px;background:rgba(212,160,23,.12);color:var(--gold-2);}
.course-price{font-weight:700;color:var(--gold-2);font-size:18px;margin-left:auto;}
.course-feats{display:flex;flex-wrap:wrap;gap:6px;}
.course-feats span{font-size:12px;padding:3px 9px;border-radius:6px;background:var(--bg-3);color:var(--txt-2);}
.course-card .btn-sm{padding:9px 18px;font-size:14px;align-self:flex-start;}
@media(max-width:900px){.courses-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:600px){.courses-grid{grid-template-columns:1fr;}}