/* ================================================
   每日大赛官网主样式 - 未来科技风格
   www.zs5eh4.cn
   ================================================ */

/* CSS变量 */
:root {
  --primary: #00c6ff;
  --secondary: #7b2ff7;
  --accent: #ff6bff;
  --bg-dark: #050a18;
  --bg-card: #0d1a2e;
  --bg-card2: #0a1628;
  --text-main: #e8f0fe;
  --text-muted: #8899bb;
  --border: rgba(0,198,255,0.15);
  --glow: 0 0 20px rgba(0,198,255,0.3);
  --glow-purple: 0 0 20px rgba(123,47,247,0.4);
  --radius: 12px;
  --transition: 0.3s ease;
  --font: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
}

/* 重置 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;font-size:16px;}
body{
  font-family:var(--font);
  background:var(--bg-dark);
  color:var(--text-main);
  line-height:1.7;
  overflow-x:hidden;
}
a{color:var(--primary);text-decoration:none;transition:color var(--transition);}
a:hover{color:var(--accent);}
img{max-width:100%;height:auto;display:block;}
ul{list-style:none;}
button{cursor:pointer;border:none;outline:none;}

/* 滚动条 */
::-webkit-scrollbar{width:6px;}
::-webkit-scrollbar-track{background:var(--bg-dark);}
::-webkit-scrollbar-thumb{background:var(--secondary);border-radius:3px;}

/* ---- 通用容器 ---- */
.container{max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:80px 0;}
.section-title{
  text-align:center;
  font-size:2rem;
  font-weight:700;
  margin-bottom:12px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.section-sub{
  text-align:center;
  color:var(--text-muted);
  font-size:1rem;
  margin-bottom:48px;
  max-width:600px;
  margin-left:auto;
  margin-right:auto;
}

/* ---- 粒子背景 ---- */
#particles-canvas{
  position:fixed;top:0;left:0;width:100%;height:100%;
  pointer-events:none;z-index:0;opacity:0.4;
}

/* ================================================
   导航栏
   ================================================ */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(5,10,24,0.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  transition:all var(--transition);
}
.navbar.scrolled{
  background:rgba(5,10,24,0.98);
  box-shadow:0 2px 20px rgba(0,198,255,0.1);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:70px;max-width:1200px;margin:0 auto;padding:0 20px;
}
.nav-logo{
  display:flex;align-items:center;gap:10px;
  font-size:1.4rem;font-weight:800;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  white-space:nowrap;
}
.nav-logo span{font-size:1.6rem;}
.nav-menu{display:flex;align-items:center;gap:8px;}
.nav-menu a{
  padding:8px 16px;border-radius:8px;
  color:var(--text-main);font-size:0.9rem;font-weight:500;
  transition:all var(--transition);
}
.nav-menu a:hover,.nav-menu a.active{
  color:var(--primary);
  background:rgba(0,198,255,0.08);
}
.nav-cta{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff !important;
  padding:8px 20px !important;
  border-radius:20px !important;
  font-weight:600 !important;
  box-shadow:var(--glow);
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 0 30px rgba(0,198,255,0.5);}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;}
.nav-toggle span{width:24px;height:2px;background:var(--primary);border-radius:2px;transition:all var(--transition);}

/* ---- 搜索框 ---- */
.search-bar{
  background:rgba(0,198,255,0.05);
  border-bottom:1px solid var(--border);
  padding:10px 0;
}
.search-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;
  display:flex;align-items:center;justify-content:center;
}
.search-wrap{
  display:flex;align-items:center;
  background:rgba(13,26,46,0.9);
  border:1px solid var(--border);
  border-radius:30px;
  padding:6px 16px;
  width:100%;max-width:560px;
  transition:border-color var(--transition),box-shadow var(--transition);
}
.search-wrap:focus-within{
  border-color:var(--primary);
  box-shadow:var(--glow);
}
.search-wrap input{
  flex:1;background:transparent;border:none;outline:none;
  color:var(--text-main);font-size:0.9rem;font-family:var(--font);
  padding:4px 8px;
}
.search-wrap input::placeholder{color:var(--text-muted);}
.search-btn{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  border:none;border-radius:20px;
  color:#fff;padding:6px 18px;font-size:0.85rem;font-weight:600;
  cursor:pointer;transition:all var(--transition);
}
.search-btn:hover{transform:scale(1.04);box-shadow:var(--glow);}

/* ================================================
   Hero Banner
   ================================================ */
.hero{
  position:relative;min-height:100vh;
  display:flex;align-items:center;
  overflow:hidden;padding-top:120px;
}
.hero-bg{
  position:absolute;inset:0;
  background:linear-gradient(135deg,#050a18 0%,#0a1628 40%,#0d0520 100%);
  z-index:1;
}
.hero-bg::after{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse 80% 60% at 60% 40%,rgba(0,198,255,0.08) 0%,transparent 70%),
             radial-gradient(ellipse 60% 50% at 80% 70%,rgba(123,47,247,0.08) 0%,transparent 60%);
}
.hero-img{
  position:absolute;right:0;top:0;bottom:0;width:55%;
  object-fit:cover;opacity:0.25;z-index:2;
  mask-image:linear-gradient(to right,transparent 0%,rgba(0,0,0,0.6) 30%,black 100%);
  -webkit-mask-image:linear-gradient(to right,transparent 0%,rgba(0,0,0,0.6) 30%,black 100%);
}
.hero-content{
  position:relative;z-index:3;
  max-width:1200px;margin:0 auto;padding:0 20px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(0,198,255,0.1);border:1px solid rgba(0,198,255,0.3);
  border-radius:20px;padding:6px 16px;
  font-size:0.8rem;color:var(--primary);font-weight:600;
  margin-bottom:24px;
}
.hero-badge::before{content:'';width:6px;height:6px;background:var(--primary);border-radius:50%;animation:pulse 1.5s infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:0.5;transform:scale(1.4);}}
.hero h1{
  font-size:clamp(2rem,5vw,3.8rem);font-weight:800;line-height:1.2;
  margin-bottom:20px;
}
.hero h1 .brand{
  background:linear-gradient(135deg,var(--primary),var(--secondary),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hero-desc{
  font-size:1.1rem;color:var(--text-muted);max-width:560px;
  margin-bottom:36px;line-height:1.8;
}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;padding:14px 32px;border-radius:30px;
  font-size:1rem;font-weight:700;
  box-shadow:var(--glow);transition:all var(--transition);
  display:inline-flex;align-items:center;gap:8px;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 40px rgba(0,198,255,0.5);color:#fff;}
.btn-outline{
  border:1px solid var(--primary);color:var(--primary);
  padding:14px 32px;border-radius:30px;
  font-size:1rem;font-weight:600;
  transition:all var(--transition);
  display:inline-flex;align-items:center;gap:8px;
}
.btn-outline:hover{background:rgba(0,198,255,0.1);transform:translateY(-2px);}
.hero-stats{
  display:flex;gap:40px;margin-top:48px;flex-wrap:wrap;
}
.stat-item{text-align:center;}
.stat-num{
  font-size:2rem;font-weight:800;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.stat-label{font-size:0.8rem;color:var(--text-muted);margin-top:4px;}

/* ================================================
   视频卡片区
   ================================================ */
.video-section{background:linear-gradient(180deg,var(--bg-dark) 0%,var(--bg-card2) 100%);}
.video-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:24px;
}
.video-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:all var(--transition);
  cursor:pointer;
}
.video-card:hover{
  transform:translateY(-6px);
  border-color:var(--primary);
  box-shadow:var(--glow),0 20px 40px rgba(0,0,0,0.4);
}
.video-thumb{
  position:relative;overflow:hidden;
  aspect-ratio:16/9;
}
.video-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 0.5s ease;
}
.video-card:hover .video-thumb img{transform:scale(1.06);}
.video-play-btn{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,0,0,0.3);
  opacity:0;transition:opacity var(--transition);
}
.video-card:hover .video-play-btn{opacity:1;}
.play-icon{
  width:56px;height:56px;
  background:rgba(0,198,255,0.9);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 30px rgba(0,198,255,0.6);
  transition:transform var(--transition);
}
.video-card:hover .play-icon{transform:scale(1.1);}
.play-icon::after{
  content:'';
  border-left:18px solid #fff;
  border-top:11px solid transparent;
  border-bottom:11px solid transparent;
  margin-left:4px;
}
.video-meta{
  position:absolute;bottom:8px;right:8px;
  background:rgba(0,0,0,0.7);
  border-radius:4px;padding:2px 8px;
  font-size:0.75rem;color:#fff;
}
.video-tag{
  position:absolute;top:8px;left:8px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  border-radius:4px;padding:2px 10px;
  font-size:0.7rem;color:#fff;font-weight:600;
}
.video-info{padding:16px;}
.video-title{
  font-size:0.95rem;font-weight:600;
  margin-bottom:8px;color:var(--text-main);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.video-stats{
  display:flex;gap:16px;font-size:0.78rem;color:var(--text-muted);
}
.video-stats span{display:flex;align-items:center;gap:4px;}

/* ================================================
   产品矩阵
   ================================================ */
.products-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:28px;
}
.product-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:all var(--transition);
}
.product-card:hover{
  transform:translateY(-6px);
  border-color:var(--secondary);
  box-shadow:var(--glow-purple),0 20px 40px rgba(0,0,0,0.4);
}
.product-img{height:200px;overflow:hidden;}
.product-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s;}
.product-card:hover .product-img img{transform:scale(1.05);}
.product-body{padding:20px;}
.product-icon{
  width:44px;height:44px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;margin-bottom:12px;
}
.product-name{font-size:1.05rem;font-weight:700;margin-bottom:8px;}
.product-desc{font-size:0.88rem;color:var(--text-muted);margin-bottom:14px;line-height:1.6;}
.product-tags{display:flex;gap:8px;flex-wrap:wrap;}
.tag{
  background:rgba(0,198,255,0.08);
  border:1px solid rgba(0,198,255,0.2);
  border-radius:4px;padding:3px 10px;
  font-size:0.75rem;color:var(--primary);
}

/* ================================================
   核心技术引擎
   ================================================ */
.tech-section{
  background:linear-gradient(180deg,var(--bg-card2) 0%,var(--bg-dark) 100%);
  position:relative;overflow:hidden;
}
.tech-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px;
}
.tech-item{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 24px;
  text-align:center;
  transition:all var(--transition);
  position:relative;overflow:hidden;
}
.tech-item::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(0,198,255,0.03),rgba(123,47,247,0.03));
  opacity:0;transition:opacity var(--transition);
}
.tech-item:hover::before{opacity:1;}
.tech-item:hover{
  border-color:var(--primary);
  box-shadow:var(--glow);
  transform:translateY(-4px);
}
.tech-icon{font-size:2.5rem;margin-bottom:14px;}
.tech-name{font-size:1rem;font-weight:700;margin-bottom:8px;}
.tech-desc{font-size:0.83rem;color:var(--text-muted);line-height:1.6;}

/* ================================================
   行业解决方案
   ================================================ */
.solutions-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;
}
.solution-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
  transition:all var(--transition);
  position:relative;overflow:hidden;
}
.solution-card::after{
  content:'';position:absolute;
  bottom:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  transform:scaleX(0);transition:transform var(--transition);
}
.solution-card:hover::after{transform:scaleX(1);}
.solution-card:hover{
  border-color:rgba(0,198,255,0.3);
  box-shadow:0 10px 40px rgba(0,0,0,0.3);
  transform:translateY(-4px);
}
.solution-industry{
  font-size:0.75rem;color:var(--primary);font-weight:600;
  text-transform:uppercase;letter-spacing:1px;margin-bottom:10px;
}
.solution-title{font-size:1.05rem;font-weight:700;margin-bottom:10px;}
.solution-desc{font-size:0.87rem;color:var(--text-muted);line-height:1.6;}

/* ================================================
   价值交付流程
   ================================================ */
.process-section{background:var(--bg-card2);}
.process-steps{
  display:flex;gap:0;flex-wrap:wrap;
  position:relative;
}
.process-steps::before{
  content:'';position:absolute;
  top:36px;left:10%;right:10%;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  opacity:0.3;
}
.process-step{
  flex:1;min-width:160px;
  text-align:center;padding:20px 16px;
  position:relative;z-index:1;
}
.step-num{
  width:72px;height:72px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:1.5rem;font-weight:800;color:#fff;
  margin:0 auto 16px;
  box-shadow:var(--glow);
}
.step-title{font-size:0.95rem;font-weight:700;margin-bottom:8px;}
.step-desc{font-size:0.8rem;color:var(--text-muted);line-height:1.5;}

/* ================================================
   标杆案例
   ================================================ */
.cases-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px;
}
.case-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
  transition:all var(--transition);
}
.case-card:hover{
  border-color:var(--accent);
  box-shadow:0 0 20px rgba(255,107,255,0.2),0 20px 40px rgba(0,0,0,0.3);
  transform:translateY(-4px);
}
.case-client{
  font-size:0.75rem;color:var(--accent);font-weight:600;
  letter-spacing:1px;margin-bottom:10px;
}
.case-title{font-size:1rem;font-weight:700;margin-bottom:10px;line-height:1.5;}
.case-desc{font-size:0.87rem;color:var(--text-muted);line-height:1.6;}
.case-result{
  margin-top:16px;
  background:rgba(0,198,255,0.06);
  border-left:3px solid var(--primary);
  padding:10px 14px;
  border-radius:0 8px 8px 0;
  font-size:0.85rem;color:var(--primary);font-weight:600;
}

/* ================================================
   科技动态
   ================================================ */
.news-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;
}
.news-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:all var(--transition);
}
.news-card:hover{
  border-color:var(--primary);
  box-shadow:var(--glow);
  transform:translateY(-4px);
}
.news-img{height:180px;overflow:hidden;}
.news-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s;}
.news-card:hover .news-img img{transform:scale(1.05);}
.news-body{padding:20px;}
.news-cat{
  font-size:0.72rem;color:var(--primary);font-weight:600;
  letter-spacing:1px;margin-bottom:8px;
}
.news-title{font-size:0.95rem;font-weight:700;margin-bottom:8px;line-height:1.5;}
.news-excerpt{font-size:0.83rem;color:var(--text-muted);line-height:1.6;margin-bottom:12px;}
.news-date{font-size:0.75rem;color:var(--text-muted);}

/* ================================================
   用户评论
   ================================================ */
.reviews-section{background:var(--bg-card2);}
.reviews-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;
}
.review-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
  transition:all var(--transition);
}
.review-card:hover{
  border-color:rgba(123,47,247,0.4);
  box-shadow:var(--glow-purple);
  transform:translateY(-3px);
}
.review-stars{color:#ffd700;font-size:1rem;margin-bottom:12px;letter-spacing:2px;}
.review-text{
  font-size:0.88rem;color:var(--text-main);
  line-height:1.7;margin-bottom:16px;
  font-style:italic;
}
.review-author{display:flex;align-items:center;gap:12px;}
.review-avatar{
  width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  display:flex;align-items:center;justify-content:center;
  font-size:1rem;font-weight:700;color:#fff;flex-shrink:0;
}
.review-name{font-size:0.88rem;font-weight:600;}
.review-role{font-size:0.75rem;color:var(--text-muted);}

/* ================================================
   FAQ
   ================================================ */
.faq-section{background:var(--bg-dark);}
.faq-list{max-width:800px;margin:0 auto;}
.faq-item{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--transition);
}
.faq-item.open{border-color:var(--primary);}
.faq-q{
  padding:20px 24px;
  display:flex;align-items:center;justify-content:space-between;
  cursor:pointer;font-weight:600;font-size:0.95rem;
  transition:color var(--transition);
}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  width:24px;height:24px;flex-shrink:0;
  background:rgba(0,198,255,0.1);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:1rem;color:var(--primary);
  transition:transform var(--transition);
}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 0.4s ease,padding 0.3s;
  padding:0 24px;
  font-size:0.88rem;color:var(--text-muted);line-height:1.7;
}
.faq-item.open .faq-a{max-height:300px;padding:0 24px 20px;}

/* ================================================
   联系我们
   ================================================ */
.contact-section{
  background:linear-gradient(135deg,var(--bg-dark) 0%,var(--bg-card2) 100%);
}
.contact-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
}
.contact-info h3{font-size:1.4rem;font-weight:700;margin-bottom:20px;}
.contact-item{
  display:flex;align-items:flex-start;gap:14px;
  margin-bottom:20px;
}
.contact-icon{
  width:44px;height:44px;flex-shrink:0;
  background:rgba(0,198,255,0.1);
  border:1px solid rgba(0,198,255,0.2);
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;
}
.contact-label{font-size:0.75rem;color:var(--text-muted);margin-bottom:2px;}
.contact-val{font-size:0.95rem;font-weight:600;}
.contact-form{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px;
}
.form-group{margin-bottom:20px;}
.form-group label{
  display:block;font-size:0.85rem;color:var(--text-muted);margin-bottom:8px;
}
.form-group input,.form-group textarea,.form-group select{
  width:100%;background:rgba(0,198,255,0.04);
  border:1px solid var(--border);border-radius:8px;
  padding:12px 16px;color:var(--text-main);
  font-size:0.9rem;font-family:var(--font);
  transition:border-color var(--transition),box-shadow var(--transition);
}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{
  outline:none;border-color:var(--primary);box-shadow:var(--glow);
}
.form-group textarea{resize:vertical;min-height:100px;}
.form-group select option{background:var(--bg-card);}
.form-submit{
  width:100%;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;padding:14px;border-radius:30px;
  font-size:1rem;font-weight:700;
  box-shadow:var(--glow);transition:all var(--transition);
}
.form-submit:hover{transform:translateY(-2px);box-shadow:0 0 40px rgba(0,198,255,0.5);}

/* ================================================
   页脚
   ================================================ */
.footer{
  background:#030810;
  border-top:1px solid var(--border);
  padding:60px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;margin-bottom:40px;
}
.footer-brand .logo{
  font-size:1.4rem;font-weight:800;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  margin-bottom:12px;
}
.footer-brand p{font-size:0.85rem;color:var(--text-muted);line-height:1.7;margin-bottom:16px;}
.footer-social{display:flex;gap:10px;}
.social-btn{
  width:36px;height:36px;
  background:rgba(0,198,255,0.08);
  border:1px solid var(--border);
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-size:0.9rem;color:var(--text-muted);
  transition:all var(--transition);
}
.social-btn:hover{
  background:rgba(0,198,255,0.15);
  border-color:var(--primary);color:var(--primary);
}
.footer-col h4{font-size:0.95rem;font-weight:700;margin-bottom:16px;color:var(--text-main);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:0.85rem;color:var(--text-muted);transition:color var(--transition);}
.footer-col ul li a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--border);
  padding-top:24px;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:12px;
}
.footer-bottom p{font-size:0.8rem;color:var(--text-muted);}
.footer-bottom a{color:var(--text-muted);}
.footer-bottom a:hover{color:var(--primary);}

/* ================================================
   面包屑
   ================================================ */
.breadcrumb{
  padding:90px 0 20px;
  background:var(--bg-card2);
  border-bottom:1px solid var(--border);
}
.breadcrumb-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;
}
.breadcrumb-list{
  display:flex;align-items:center;gap:8px;
  font-size:0.85rem;color:var(--text-muted);flex-wrap:wrap;
}
.breadcrumb-list a{color:var(--text-muted);}
.breadcrumb-list a:hover{color:var(--primary);}
.breadcrumb-list .sep{color:var(--border);}
.breadcrumb-list .current{color:var(--primary);}
.page-hero{
  background:var(--bg-card2);
  padding:40px 0 60px;
  text-align:center;
}
.page-hero h1{
  font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  margin-bottom:12px;
}
.page-hero p{font-size:1rem;color:var(--text-muted);max-width:600px;margin:0 auto;}

/* ================================================
   响应式
   ================================================ */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .contact-grid{grid-template-columns:1fr;}
}
@media(max-width:768px){
  .section{padding:60px 0;}
  .nav-menu{
    display:none;flex-direction:column;
    position:absolute;top:70px;left:0;right:0;
    background:rgba(5,10,24,0.98);
    border-bottom:1px solid var(--border);
    padding:16px 20px;gap:4px;
  }
  .nav-menu.open{display:flex;}
  .nav-toggle{display:flex;}
  .hero{padding-top:140px;}
  .hero-img{display:none;}
  .hero h1{font-size:2rem;}
  .hero-stats{gap:24px;}
  .process-steps::before{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;text-align:center;}
  .video-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr;}
  .hero-btns{flex-direction:column;}
  .btn-primary,.btn-outline{width:100%;justify-content:center;}
}

/* ================================================
   动画
   ================================================ */
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(30px);}
  to{opacity:1;transform:translateY(0);}
}
.fade-in{animation:fadeInUp 0.6s ease forwards;}
.fade-in-delay-1{animation-delay:0.1s;opacity:0;}
.fade-in-delay-2{animation-delay:0.2s;opacity:0;}
.fade-in-delay-3{animation-delay:0.3s;opacity:0;}

/* 内页通用 */
.inner-content{padding:60px 0;}
.inner-content h2{
  font-size:1.6rem;font-weight:700;margin-bottom:16px;
  color:var(--text-main);
}
.inner-content h3{
  font-size:1.2rem;font-weight:700;margin-bottom:12px;
  color:var(--primary);
}
.inner-content p{
  font-size:0.93rem;color:var(--text-muted);
  line-height:1.8;margin-bottom:16px;
}
.inner-content ul{
  list-style:disc;padding-left:20px;
  margin-bottom:16px;
}
.inner-content ul li{
  font-size:0.9rem;color:var(--text-muted);
  line-height:1.7;margin-bottom:6px;
}

/* 合作伙伴 */
.partners-row{
  display:flex;align-items:center;justify-content:center;
  gap:32px;flex-wrap:wrap;margin-top:24px;
}
.partner-item{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:8px;
  padding:12px 24px;
  font-size:0.9rem;font-weight:600;color:var(--text-muted);
  transition:all var(--transition);
}
.partner-item:hover{border-color:var(--primary);color:var(--primary);}