/* ===== 校花传媒 - 樱花粉紫原创风格 ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{--pink:#e8598b;--pink-light:#f5a0b8;--purple:#8b5cf6;--purple-dark:#6d28d9;--lavender:#c4b5fd;--bg:#faf5f8;--bg-alt:#f3e8f0;--text:#2d1b36;--text-light:#6b4f7a;--white:#fff;--shadow:0 4px 20px rgba(139,92,246,.12);--radius:12px}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
a{color:var(--purple);text-decoration:none;transition:color .3s}
a:hover{color:var(--pink)}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{background:rgba(255,255,255,.95);backdrop-filter:blur(12px);position:fixed;top:0;left:0;right:0;z-index:1000;box-shadow:0 2px 16px rgba(139,92,246,.08);transition:all .3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1200px;margin:0 auto}
.logo-area{display:flex;align-items:center;gap:10px}
.logo-area img{height:42px;width:auto}
.brand-name{font-size:1.4rem;font-weight:700;background:linear-gradient(135deg,var(--pink),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.main-nav{display:flex;gap:6px}
.main-nav a{padding:8px 14px;border-radius:8px;font-size:.9rem;color:var(--text);font-weight:500;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:linear-gradient(135deg,var(--pink),var(--purple));color:var(--white);-webkit-text-fill-color:var(--white)}
.mobile-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--purple)}

/* Search Bar */
.search-bar{background:linear-gradient(135deg,var(--pink-light),var(--lavender));padding:12px 0}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%;background:var(--white);border-radius:25px;overflow:hidden;box-shadow:var(--shadow)}
.search-box input{flex:1;border:none;padding:10px 20px;font-size:.95rem;outline:none;background:transparent}
.search-box button{background:linear-gradient(135deg,var(--pink),var(--purple));color:var(--white);border:none;padding:10px 24px;cursor:pointer;font-size:.95rem;transition:opacity .3s}
.search-box button:hover{opacity:.85}

/* Hero Banner */
.hero-banner{position:relative;height:520px;overflow:hidden;margin-top:62px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;background-repeat:no-repeat}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(232,89,139,.7),rgba(139,92,246,.6))}
.hero-content{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;color:var(--white);padding:0 20px}
.hero-content h1{font-size:2.8rem;font-weight:800;margin-bottom:12px;text-shadow:0 2px 12px rgba(0,0,0,.3)}
.hero-subtitle{font-size:1.3rem;opacity:.95;margin-bottom:8px}
.hero-desc{font-size:1rem;opacity:.85;max-width:700px;margin-bottom:20px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.hero-tags span{background:rgba(255,255,255,.2);backdrop-filter:blur(4px);padding:5px 14px;border-radius:20px;font-size:.85rem}

/* Stats Bar */
.stats-bar{background:var(--white);padding:20px 0;box-shadow:var(--shadow)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item .stat-num{font-size:2rem;font-weight:800;background:linear-gradient(135deg,var(--pink),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-item .stat-label{font-size:.85rem;color:var(--text-light);margin-top:4px}

/* Sections */
.section{padding:60px 0}
.section-alt{padding:60px 0;background:var(--bg-alt)}
.section-header{text-align:center;margin-bottom:40px}
.section-header h2{font-size:1.9rem;font-weight:700;margin-bottom:10px;background:linear-gradient(135deg,var(--pink),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-header p{color:var(--text-light);font-size:1rem;max-width:600px;margin:0 auto}

/* Video Grid */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 32px rgba(139,92,246,.2)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#e8d5f0}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(232,89,139,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;cursor:pointer}
.video-play-btn::after{content:'';border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent var(--white);margin-left:3px}
.video-card:hover .video-play-btn{opacity:1}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:var(--white);padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:14px}
.video-info h3{font-size:1rem;font-weight:600;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:12px;font-size:.8rem;color:var(--text-light)}
.video-meta span::before{content:'';display:inline-block;width:4px;height:4px;background:var(--pink-light);border-radius:50%;margin-right:4px;vertical-align:middle}

/* Feature Grid */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.feature-card{background:var(--white);border-radius:var(--radius);padding:28px;text-align:center;box-shadow:var(--shadow);transition:transform .3s}
.feature-card:hover{transform:translateY(-4px)}
.feature-icon{width:60px;height:60px;margin:0 auto 16px;background:linear-gradient(135deg,var(--pink-light),var(--lavender));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.6rem}
.feature-card h3{font-size:1.1rem;font-weight:600;margin-bottom:8px}
.feature-card p{font-size:.9rem;color:var(--text-light)}

/* AI Grid */
.ai-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.ai-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s}
.ai-card:hover{transform:translateY(-4px)}
.ai-card .card-img{height:200px;overflow:hidden}
.ai-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.ai-card:hover .card-img img{transform:scale(1.05)}
.ai-card .card-body{padding:20px}
.ai-card .card-body h3{font-size:1.1rem;font-weight:600;margin-bottom:8px}
.ai-card .card-body p{font-size:.9rem;color:var(--text-light)}

/* Community Grid */
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.community-card{background:var(--white);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow);transition:transform .3s;border-top:3px solid var(--pink)}
.community-card:hover{transform:translateY(-4px)}
.community-card h3{font-size:1.05rem;font-weight:600;margin-bottom:8px;color:var(--purple-dark)}
.community-card p{font-size:.88rem;color:var(--text-light)}

/* Expert Grid */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.expert-card{background:var(--white);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow);transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 14px;overflow:hidden;border:3px solid var(--pink-light)}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-title{font-size:.85rem;color:var(--pink);margin-bottom:6px}
.expert-card h3{font-size:1.05rem;font-weight:600;margin-bottom:4px}
.expert-card p{font-size:.85rem;color:var(--text-light);margin-bottom:12px}
.expert-card .btn-group{display:flex;gap:8px;justify-content:center}
.btn-sm{padding:6px 14px;border-radius:20px;font-size:.8rem;border:1px solid var(--pink);color:var(--pink);transition:all .3s;cursor:pointer;background:transparent}
.btn-sm:hover{background:var(--pink);color:var(--white)}

/* Brand Wall */
.brand-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.brand-item{background:var(--white);padding:16px 28px;border-radius:var(--radius);box-shadow:var(--shadow);font-weight:600;color:var(--text-light);transition:transform .3s}
.brand-item:hover{transform:scale(1.05)}

/* Trust Section */
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.trust-card{background:var(--white);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow)}
.trust-card h3{font-size:1.05rem;font-weight:600;margin-bottom:8px;color:var(--purple-dark)}
.trust-card p{font-size:.88rem;color:var(--text-light)}

/* HowTo Steps */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px;counter-reset:step}
.howto-step{background:var(--white);border-radius:var(--radius);padding:28px;text-align:center;box-shadow:var(--shadow);position:relative;counter-increment:step}
.howto-step::before{content:counter(step);position:absolute;top:-12px;left:50%;transform:translateX(-50%);width:32px;height:32px;background:linear-gradient(135deg,var(--pink),var(--purple));color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem}
.howto-step h3{font-size:1rem;font-weight:600;margin:8px 0}
.howto-step p{font-size:.88rem;color:var(--text-light)}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--white);border-radius:var(--radius);margin-bottom:12px;box-shadow:var(--shadow);overflow:hidden}
.faq-question{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;cursor:pointer;font-weight:600;font-size:1rem;transition:background .3s}
.faq-question:hover{background:var(--bg-alt)}
.faq-toggle{font-size:1.2rem;transition:transform .3s;color:var(--purple)}
.faq-item.active .faq-toggle{transform:rotate(45deg)}
.faq-answer{padding:0 20px;max-height:0;overflow:hidden;transition:all .3s;font-size:.92rem;color:var(--text-light)}
.faq-item.active .faq-answer{padding:0 20px 16px;max-height:300px}

/* Reviews */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.review-card{background:var(--white);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.review-stars{color:#f59e0b;margin-bottom:8px;font-size:1.1rem}
.review-text{font-size:.92rem;color:var(--text);margin-bottom:12px;font-style:italic;line-height:1.6}
.reviewer{font-size:.85rem;color:var(--text-light);text-align:right}

/* Contact */
.contact-grid{display:grid;grid-template-columns:2fr 1fr;gap:30px}
.contact-info{background:var(--white);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.info-item{padding:10px 0;border-bottom:1px solid var(--bg-alt);font-size:.95rem}
.info-item:last-child{border-bottom:none}
.info-item strong{color:var(--purple-dark);min-width:60px;display:inline-block}
.contact-qr{display:flex;flex-direction:column;gap:16px}
.qr-item{background:var(--white);border-radius:var(--radius);padding:16px;text-align:center;box-shadow:var(--shadow)}
.qr-item img{width:140px;height:140px;object-fit:cover;border-radius:8px;margin-bottom:8px}
.qr-item p{font-size:.85rem;color:var(--text-light)}

/* Footer */
.site-footer{background:linear-gradient(135deg,#2d1b36,#1a0e22);color:rgba(255,255,255,.7);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-brand{display:flex;flex-direction:column;gap:12px}
.footer-logo{display:flex;align-items:center;gap:10px}
.footer-logo img{height:36px}
.footer-logo span{font-size:1.2rem;font-weight:700;color:var(--pink-light)}
.footer-brand p{font-size:.88rem;line-height:1.6}
.footer-col h4{color:var(--pink-light);font-size:1rem;margin-bottom:14px}
.footer-col a{display:block;padding:4px 0;font-size:.88rem;color:rgba(255,255,255,.6);transition:color .3s}
.footer-col a:hover{color:var(--pink-light)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:.82rem}
.footer-bottom a{color:var(--pink-light)}

/* Breadcrumb */
.breadcrumb{padding:12px 0;font-size:.85rem;color:var(--text-light)}
.breadcrumb a{color:var(--purple)}
.breadcrumb span{margin:0 6px;color:var(--text-light)}

/* Inner page */
.page-hero{background:linear-gradient(135deg,var(--pink),var(--purple));color:var(--white);padding:100px 0 40px;text-align:center}
.page-hero h1{font-size:2.2rem;font-weight:700;margin-bottom:8px}
.page-hero p{opacity:.85;font-size:1rem}
.page-content{padding:40px 0}
.article-content{max-width:900px;margin:0 auto;background:var(--white);border-radius:var(--radius);padding:36px;box-shadow:var(--shadow)}
.article-content h2{font-size:1.5rem;font-weight:600;margin:24px 0 12px;color:var(--purple-dark);border-left:4px solid var(--pink);padding-left:12px}
.article-content p{margin-bottom:14px;font-size:.95rem;line-height:1.8;color:var(--text)}
.update-info{text-align:center;padding:16px;font-size:.85rem;color:var(--text-light);background:var(--bg-alt);border-radius:var(--radius);margin-top:20px}

/* Fade In Animation */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .6s,transform .6s}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* Responsive */
@media(max-width:768px){
  .mobile-toggle{display:block}
  .main-nav{display:none;position:absolute;top:62px;left:0;right:0;background:var(--white);flex-direction:column;padding:16px;box-shadow:var(--shadow)}
  .main-nav.show{display:flex}
  .hero-banner{height:400px}
  .hero-content h1{font-size:1.8rem}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .trust-grid{grid-template-columns:1fr}
  .video-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .hero-banner{height:320px}
  .hero-content h1{font-size:1.5rem}
  .section{padding:36px 0}
  .section-alt{padding:36px 0}
}