/* ============================================
   校花传媒 - 原创样式表
   品牌色系：樱花粉 #E91E63 / 珊瑚橙 #FF6B6B / 深紫 #2D1B69 / 暗夜蓝 #0F0A1E
   ============================================ */

/* === 基础重置与全局 === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --brand-pink:#E91E63;
  --brand-coral:#FF6B6B;
  --brand-purple:#2D1B69;
  --brand-dark:#0F0A1E;
  --brand-light:#FFF0F5;
  --brand-gold:#FFD700;
  --text-primary:#F5F5F5;
  --text-secondary:#B0A8C0;
  --card-bg:rgba(45,27,105,0.35);
  --card-border:rgba(233,30,99,0.2);
  --radius:12px;
  --shadow:0 8px 32px rgba(0,0,0,0.3);
  --transition:all 0.3s ease;
}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--brand-dark);
  color:var(--text-primary);
  line-height:1.7;
  overflow-x:hidden;
  min-height:100vh;
}
a{color:var(--brand-coral);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--brand-pink)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--text-primary)}

/* === 容器 === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:60px 0}
.section-title{
  text-align:center;
  font-size:2rem;
  margin-bottom:12px;
  background:linear-gradient(135deg,var(--brand-pink),var(--brand-coral));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.section-subtitle{
  text-align:center;
  color:var(--text-secondary);
  font-size:1rem;
  margin-bottom:40px;
}

/* === 顶部导航 === */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(15,10,30,0.92);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--card-border);
  transition:var(--transition);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 20px;max-width:1200px;margin:0 auto;
}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-text{font-size:1.4rem;font-weight:800;color:var(--brand-pink)}
.logo-text span{color:var(--brand-coral);font-size:0.8rem;display:block;font-weight:400}

.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{
  padding:8px 14px;border-radius:8px;font-size:0.9rem;
  color:var(--text-secondary);transition:var(--transition);
  white-space:nowrap;
}
.main-nav a:hover,.main-nav a.active{
  color:#fff;background:rgba(233,30,99,0.15);
}

.mobile-toggle{display:none;cursor:pointer;padding:8px}
.mobile-toggle span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;transition:var(--transition)}

/* === 搜索框 === */
.search-bar{
  background:rgba(45,27,105,0.3);
  border-bottom:1px solid var(--card-border);
  padding:10px 0;
  margin-top:68px;
}
.search-wrap{
  max-width:600px;margin:0 auto;position:relative;
  display:flex;align-items:center;
}
.search-wrap input{
  width:100%;padding:10px 44px 10px 16px;
  border:1px solid var(--card-border);
  border-radius:24px;
  background:rgba(15,10,30,0.6);
  color:var(--text-primary);
  font-size:0.9rem;
  outline:none;
  transition:var(--transition);
}
.search-wrap input:focus{border-color:var(--brand-pink)}
.search-wrap input::placeholder{color:var(--text-secondary)}
.search-btn{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);
  background:linear-gradient(135deg,var(--brand-pink),var(--brand-coral));
  border:none;border-radius:50%;width:36px;height:36px;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:1rem;
}

/* === Banner轮播 === */
.hero-banner{
  position:relative;overflow:hidden;
  height:420px;
}
.hero-slides{display:flex;transition:transform 0.6s ease;height:100%}
.hero-slide{
  min-width:100%;height:100%;position:relative;
  background-size:cover;background-position:center;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(to right,rgba(15,10,30,0.85) 0%,rgba(15,10,30,0.4) 60%,transparent 100%);
  display:flex;align-items:center;
}
.hero-content{padding:0 60px;max-width:600px}
.hero-content h1{font-size:2.4rem;margin-bottom:12px;line-height:1.2}
.hero-content h1 em{font-style:normal;color:var(--brand-pink)}
.hero-content p{color:var(--text-secondary);font-size:1rem;margin-bottom:24px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.btn-primary{
  display:inline-flex;align-items:center;gap:6px;
  padding:12px 28px;border-radius:28px;font-size:0.95rem;
  background:linear-gradient(135deg,var(--brand-pink),var(--brand-coral));
  color:#fff;border:none;cursor:pointer;transition:var(--transition);
  font-weight:600;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(233,30,99,0.4);color:#fff}
.btn-outline{
  display:inline-flex;align-items:center;gap:6px;
  padding:12px 28px;border-radius:28px;font-size:0.95rem;
  border:1px solid var(--brand-pink);color:var(--brand-pink);
  background:transparent;cursor:pointer;transition:var(--transition);
}
.btn-outline:hover{background:var(--brand-pink);color:#fff}

.hero-dots{
  position:absolute;bottom:20px;left:50%;transform:translateX(-50%);
  display:flex;gap:8px;
}
.hero-dots span{
  width:10px;height:10px;border-radius:50%;
  background:rgba(255,255,255,0.3);cursor:pointer;transition:var(--transition);
}
.hero-dots span.active{background:var(--brand-pink);width:28px;border-radius:5px}

/* === 视频卡片网格 === */
.video-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:24px;
}
.video-card{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:var(--transition);
  cursor:pointer;
}
.video-card:hover{
  transform:translateY(-6px);
  box-shadow:0 12px 40px rgba(233,30,99,0.2);
  border-color:var(--brand-pink);
}
.video-thumb{
  position:relative;overflow:hidden;
  aspect-ratio:16/9;
}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{
  position:absolute;top:50%;left:50%;
  transform:translate(-50%,-50%) scale(0);
  width:56px;height:56px;border-radius:50%;
  background:rgba(233,30,99,0.9);
  display:flex;align-items:center;justify-content:center;
  transition:var(--transition);
  opacity:0;
  z-index:2;
}
.play-btn::after{
  content:'';display:block;
  width:0;height:0;
  border-style:solid;
  border-width:10px 0 10px 18px;
  border-color:transparent transparent transparent #fff;
  margin-left:3px;
}
.video-card:hover .play-btn{
  transform:translate(-50%,-50%) scale(1);
  opacity:1;
}
.video-duration{
  position:absolute;bottom:8px;right:8px;
  background:rgba(0,0,0,0.75);color:#fff;
  padding:2px 8px;border-radius:4px;font-size:0.75rem;
}
.video-stats{
  display:flex;gap:12px;font-size:0.8rem;color:var(--text-secondary);
  margin-top:8px;
}
.video-stats span{display:flex;align-items:center;gap:4px}
.video-info{padding:14px}
.video-info h3{font-size:0.95rem;margin-bottom:6px;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-info .tag{
  display:inline-block;padding:2px 10px;border-radius:12px;
  font-size:0.75rem;background:rgba(233,30,99,0.15);
  color:var(--brand-pink);margin-right:6px;margin-top:4px;
}

/* === 服务网格 === */
.service-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:24px;
}

/* === 专家展示 === */
.expert-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:24px;
}
.expert-card{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:28px 20px;text-align:center;
  transition:var(--transition);
}
.expert-card:hover{border-color:var(--brand-pink);transform:translateY(-4px)}
.expert-avatar{
  width:100px;height:100px;border-radius:50%;
  margin:0 auto 16px;overflow:hidden;
  border:3px solid var(--brand-pink);
}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:1.1rem;margin-bottom:4px}
.expert-card .role{color:var(--brand-coral);font-size:0.85rem;margin-bottom:10px}
.expert-card p{font-size:0.85rem;color:var(--text-secondary);margin-bottom:16px;line-height:1.6}
.expert-btns{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
.expert-btns a{
  padding:6px 16px;border-radius:20px;font-size:0.8rem;
  border:1px solid var(--brand-pink);color:var(--brand-pink);
  transition:var(--transition);
}
.expert-btns a:hover{background:var(--brand-pink);color:#fff}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  margin-bottom:12px;overflow:hidden;
}
.faq-q{
  padding:16px 20px;cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;
  font-weight:600;font-size:0.95rem;
  transition:var(--transition);
}
.faq-q:hover{color:var(--brand-pink)}
.faq-q::after{content:'+';font-size:1.4rem;color:var(--brand-pink);transition:var(--transition)}
.faq-item.active .faq-q::after{content:'-';transform:rotate(180deg)}
.faq-a{
  padding:0 20px;max-height:0;overflow:hidden;
  transition:max-height 0.3s ease,padding 0.3s ease;
  color:var(--text-secondary);font-size:0.9rem;line-height:1.8;
}
.faq-item.active .faq-a{max-height:300px;padding:0 20px 16px}

/* === 用户评论 === */
.review-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:20px;
}
.review-card{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:24px;transition:var(--transition);
}
.review-card:hover{border-color:var(--brand-pink)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{
  width:44px;height:44px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand-pink),var(--brand-coral));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:1.1rem;
  flex-shrink:0;
}
.review-name{font-weight:600;font-size:0.9rem}
.review-date{font-size:0.75rem;color:var(--text-secondary)}
.review-stars{color:var(--brand-gold);font-size:0.85rem;margin-bottom:8px;letter-spacing:2px}
.review-text{font-size:0.88rem;color:var(--text-secondary);line-height:1.7}

/* === 合作品牌 === */
.partner-wall{
  display:flex;flex-wrap:wrap;justify-content:center;
  gap:30px;align-items:center;
}
.partner-wall .partner-item{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:16px 28px;
  font-size:1rem;font-weight:600;
  color:var(--text-secondary);
  transition:var(--transition);
}
.partner-wall .partner-item:hover{
  border-color:var(--brand-pink);color:var(--brand-pink);
}

/* === 联系信息 === */
.contact-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(250px,1fr));
  gap:24px;
}
.contact-card{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:24px;text-align:center;
}
.contact-card h4{color:var(--brand-pink);margin-bottom:12px;font-size:1rem}
.contact-card p{font-size:0.88rem;color:var(--text-secondary);line-height:1.8}
.contact-card img{max-width:160px;margin:12px auto 0;border-radius:8px}

/* === 社交分享 === */
.share-bar{
  display:flex;gap:12px;justify-content:center;flex-wrap:wrap;
  padding:20px 0;
}
.share-bar a{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 18px;border-radius:20px;font-size:0.85rem;
  background:var(--card-bg);border:1px solid var(--card-border);
  color:var(--text-secondary);transition:var(--transition);
}
.share-bar a:hover{border-color:var(--brand-pink);color:var(--brand-pink)}

/* === 页脚 === */
.site-footer{
  background:rgba(15,10,30,0.95);
  border-top:1px solid var(--card-border);
  padding:40px 0 20px;
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
  gap:30px;margin-bottom:30px;
}
.footer-col h5{
  color:var(--brand-pink);font-size:1rem;
  margin-bottom:16px;padding-bottom:8px;
  border-bottom:2px solid var(--brand-pink);
  display:inline-block;
}
.footer-col p,.footer-col a{
  font-size:0.85rem;color:var(--text-secondary);
  display:block;margin-bottom:8px;line-height:1.7;
}
.footer-col a:hover{color:var(--brand-pink)}
.footer-logo{margin-bottom:12px}
.footer-qr{display:flex;gap:20px;margin-top:12px}
.footer-qr img{width:120px;border-radius:8px}
.footer-bottom{
  text-align:center;padding-top:20px;
  border-top:1px solid var(--card-border);
  font-size:0.8rem;color:var(--text-secondary);
}
.footer-bottom a{color:var(--brand-coral)}

/* === 面包屑 === */
.breadcrumb{
  padding:12px 0;font-size:0.85rem;color:var(--text-secondary);
}
.breadcrumb a{color:var(--brand-coral)}
.breadcrumb span{margin:0 6px;color:var(--text-secondary)}

/* === How-To指南 === */
.howto-steps{max-width:800px;margin:0 auto}
.howto-step{
  display:flex;gap:20px;align-items:flex-start;
  margin-bottom:24px;
}
.step-num{
  flex-shrink:0;width:48px;height:48px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand-pink),var(--brand-coral));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:1.2rem;
}
.step-content h4{margin-bottom:6px;font-size:1rem}
.step-content p{font-size:0.88rem;color:var(--text-secondary);line-height:1.7}

/* === 内页通用 === */
.page-hero{
  padding:50px 0;
  background:linear-gradient(135deg,var(--brand-purple),var(--brand-dark));
  text-align:center;
}
.page-hero h1{font-size:2rem;margin-bottom:8px}
.page-hero p{color:var(--text-secondary);font-size:1rem}

/* === AI赋能模块 === */
.ai-features{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:24px;
}
.ai-card{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:28px;transition:var(--transition);
  position:relative;overflow:hidden;
}
.ai-card::before{
  content:'';position:absolute;top:-50%;right:-50%;
  width:100%;height:100%;
  background:radial-gradient(circle,rgba(233,30,99,0.08) 0%,transparent 70%);
  transition:var(--transition);
}
.ai-card:hover{border-color:var(--brand-pink);transform:translateY(-4px)}
.ai-card h4{font-size:1.05rem;margin-bottom:10px;color:var(--brand-coral)}
.ai-card p{font-size:0.88rem;color:var(--text-secondary);line-height:1.7;position:relative;z-index:1}
.ai-icon{
  font-size:2rem;margin-bottom:14px;
  background:linear-gradient(135deg,var(--brand-pink),var(--brand-coral));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}

/* === 社区模块 === */
.community-features{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
  gap:20px;
}
.community-card{
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--radius);
  padding:24px;text-align:center;
  transition:var(--transition);
}
.community-card:hover{border-color:var(--brand-pink);transform:translateY(-4px)}
.community-icon{font-size:2.4rem;margin-bottom:12px}
.community-card h4{font-size:1rem;margin-bottom:8px}
.community-card p{font-size:0.85rem;color:var(--text-secondary);line-height:1.6}

/* === 响应式 === */
@media(max-width:768px){
  .header-inner{padding:10px 16px}
  .main-nav{
    position:fixed;top:60px;left:0;right:0;
    background:rgba(15,10,30,0.98);
    flex-direction:column;padding:20px;
    transform:translateY(-120%);transition:var(--transition);
    border-bottom:1px solid var(--card-border);
  }
  .main-nav.open{transform:translateY(0)}
  .mobile-toggle{display:block}
  .search-bar{margin-top:60px}
  .hero-banner{height:320px}
  .hero-content{padding:0 20px}
  .hero-content h1{font-size:1.6rem}
  .section{padding:40px 0}
  .section-title{font-size:1.5rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
  .expert-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .page-hero{padding:30px 0}
  .page-hero h1{font-size:1.5rem}
  .ai-features{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .service-grid{grid-template-columns:1fr}
  .community-features{grid-template-columns:repeat(auto-fill,minmax(180px,1fr))}
}
@media(max-width:480px){
  .hero-banner{height:260px}
  .hero-content h1{font-size:1.3rem}
  .video-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .partner-wall{gap:12px}
  .community-features{grid-template-columns:1fr}
}