:root{--primary-color:#ff6b9d;--primary-dark:#c44569;--secondary-color:#667eea;--text-color:#333;--text-light:#666;--bg-light:#f8f9fa;--white:#fff;--shadow:0 10px 40px rgba(0,0,0,0.1);--radius:16px}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;color:var(--text-color);line-height:1.6;background:var(--white)}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
a{text-decoration:none;color:inherit;transition:all .3s ease}
img{max-width:100%;height:auto}
.btn{display:inline-block;padding:12px 28px;border-radius:30px;font-weight:600;cursor:pointer;transition:all .3s ease}
.btn-primary{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);color:var(--white)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(255,107,157,0.4)}
.btn-outline{background:transparent;border:2px solid var(--white);color:var(--white)}
.btn-outline:hover{background:var(--white);color:var(--primary-color)}
.header{background:var(--white);box-shadow:0 2px 20px rgba(0,0,0,0.08);position:sticky;top:0;z-index:1000}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:15px 0}
.logo{display:flex;align-items:center;gap:10px}
.logo img{border-radius:10px}
.logo-text{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-menu{display:flex;gap:30px}
.nav-menu a{font-weight:500;color:var(--text-color);padding:8px 0;position:relative}
.nav-menu a:hover,.nav-menu a.active{color:var(--primary-color)}
.nav-menu a.active::after{content:'';position:absolute;bottom:0;left:0;width:100%;height:2px;background:var(--primary-color)}
.mobile-menu-btn{display:none;flex-direction:column;gap:5px;cursor:pointer}
.mobile-menu-btn span{width:25px;height:3px;background:var(--text-color);border-radius:3px}
.search-box{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);padding:20px 0}
.search-wrapper{display:flex;max-width:600px;margin:0 auto;background:var(--white);border-radius:30px;overflow:hidden;box-shadow:var(--shadow)}
.search-input{flex:1;padding:15px 25px;border:none;outline:none;font-size:1rem}
.search-btn{padding:15px 25px;background:none;border:none;cursor:pointer}
.search-btn svg{width:24px;height:24px;fill:var(--text-light)}
.hero{position:relative;height:500px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.hero-bg{position:absolute;width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,107,157,0.8) 0%,rgba(196,69,105,0.8) 100%)}
.hero-content{position:relative;text-align:center;color:var(--white);max-width:800px}
.hero-content h1{font-size:2.8rem;margin-bottom:20px;text-shadow:0 2px 10px rgba(0,0,0,0.2)}
.hero-content p{font-size:1.2rem;margin-bottom:30px;opacity:.95}
.section{padding:80px 0}
.section-alt{background:var(--bg-light)}
.section-header{text-align:center;margin-bottom:50px}
.section-header h2{font-size:2rem;margin-bottom:15px;color:var(--text-color)}
.section-header p{color:var(--text-light);max-width:600px;margin:0 auto}
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
.video-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s ease}
.video-card:hover{transform:translateY(-5px)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(255,255,255,0.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s ease}
.video-card:hover .play-btn{opacity:1}
.play-btn svg{width:30px;height:30px;fill:var(--primary-color);margin-left:5px}
.video-duration{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,0.7);color:var(--white);padding:3px 8px;border-radius:4px;font-size:.85rem}
.video-tags{position:absolute;top:10px;left:10px;display:flex;gap:5px;flex-wrap:wrap}
.video-tags .tag{background:var(--primary-color);color:var(--white);padding:3px 10px;border-radius:20px;font-size:.75rem}
.video-info{padding:15px}
.video-title{font-size:1rem;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:15px;color:var(--text-light);font-size:.85rem}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
.feature-card{background:var(--white);border-radius:var(--radius);padding:30px;text-align:center;box-shadow:var(--shadow);transition:transform .3s ease}
.feature-card:hover{transform:translateY(-5px)}
.feature-icon{width:70px;height:70px;margin:0 auto 20px;background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);border-radius:50%;display:flex;align-items:center;justify-content:center}
.feature-icon svg{width:35px;height:35px;fill:var(--white)}
.feature-card h3{font-size:1.1rem;margin-bottom:10px}
.feature-card p{color:var(--text-light);font-size:.95rem}
.expert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.expert-card{background:var(--white);border-radius:var(--radius);padding:30px;text-align:center;box-shadow:var(--shadow)}
.expert-avatar{width:120px;height:120px;margin:0 auto 20px;border-radius:50%;overflow:hidden;border:4px solid var(--primary-color)}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-name{font-size:1.3rem;margin-bottom:5px}
.expert-title{color:var(--primary-color);font-weight:500;margin-bottom:15px}
.expert-credentials{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:15px}
.expert-credentials .credential{background:var(--bg-light);color:var(--text-light);padding:5px 12px;border-radius:20px;font-size:.8rem}
.expert-desc{color:var(--text-light);font-size:.95rem}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.stat-item{text-align:center;padding:30px;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow)}
.stat-number{font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{color:var(--text-light);margin-top:10px}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.review-card{background:var(--white);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow)}
.review-header{display:flex;align-items:center;gap:15px;margin-bottom:15px}
.review-avatar{width:50px;height:50px;background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:600;font-size:1.2rem}
.review-user h4{font-size:1rem;margin-bottom:3px}
.review-user span{color:var(--text-light);font-size:.85rem}
.review-stars{color:#ffc107;font-size:1.2rem;margin-bottom:10px}
.review-text{color:var(--text-light);font-size:.95rem;line-height:1.7}
.review-date{color:var(--text-light);font-size:.8rem;margin-top:10px}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--white);border-radius:var(--radius);margin-bottom:15px;box-shadow:var(--shadow);overflow:hidden}
.faq-question{padding:20px 25px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-weight:500}
.faq-question svg{width:24px;height:24px;fill:var(--text-light);transition:transform .3s ease}
.faq-item.active .faq-question svg{transform:rotate(180deg)}
.faq-answer{padding:0 25px 20px;color:var(--text-light);display:none}
.faq-item.active .faq-answer{display:block}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.contact-card{background:var(--white);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);text-align:center}
.contact-card h3{font-size:1.2rem;margin-bottom:20px;color:var(--primary-color)}
.contact-card p{margin-bottom:10px;color:var(--text-light)}
.contact-card img{max-width:150px;margin:15px auto;display:block}
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.tool-card{background:var(--white);border-radius:var(--radius);padding:30px;text-align:center;box-shadow:var(--shadow)}
.tool-icon{width:80px;height:80px;margin:0 auto 20px;background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);border-radius:20px;display:flex;align-items:center;justify-content:center}
.tool-icon svg{width:40px;height:40px;fill:var(--white)}
.tool-card h3{font-size:1.2rem;margin-bottom:10px}
.tool-card p{color:var(--text-light);margin-bottom:20px}
.breadcrumb{background:var(--bg-light);padding:15px 0}
.breadcrumb-list{display:flex;align-items:center;gap:10px;list-style:none;font-size:.9rem}
.breadcrumb-list a{color:var(--primary-color)}
.breadcrumb-list .current{color:var(--text-light)}
.page-header{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);color:var(--white);padding:60px 0;text-align:center}
.page-header h1{font-size:2.2rem;margin-bottom:15px}
.page-header p{opacity:.9;max-width:600px;margin:0 auto}
.category-tabs{display:flex;gap:15px;flex-wrap:wrap;margin-bottom:40px;justify-content:center}
.category-tab{padding:10px 25px;border-radius:25px;background:var(--bg-light);border:none;cursor:pointer;font-weight:500;transition:all .3s ease}
.category-tab:hover,.category-tab.active{background:var(--primary-color);color:var(--white)}
.community-banner{position:relative;border-radius:var(--radius);overflow:hidden;height:300px}
.community-banner img{width:100%;height:100%;object-fit:cover}
.community-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,107,157,0.8) 0%,rgba(196,69,105,0.8) 100%);display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--white);text-align:center;padding:20px}
.community-overlay h2{font-size:2rem;margin-bottom:15px}
.community-overlay p{margin-bottom:25px;opacity:.9}
.share-section{background:var(--bg-light);padding:30px 0}
.share-wrapper{display:flex;align-items:center;justify-content:center;gap:20px}
.share-btns{display:flex;gap:15px}
.share-btn{width:45px;height:45px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:transform .3s ease}
.share-btn:hover{transform:scale(1.1)}
.share-btn svg{width:24px;height:24px;fill:var(--white)}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#000}
.share-btn.bilibili{background:#fb7299}
.footer{background:#1a1a2e;color:var(--white);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:20px}
.footer-logo img{width:50px;border-radius:10px}
.footer-desc{color:rgba(255,255,255,0.7);font-size:.95rem;line-height:1.7}
.footer-col h4{font-size:1.1rem;margin-bottom:20px}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{color:rgba(255,255,255,0.7);transition:color .3s ease}
.footer-col ul a:hover{color:var(--primary-color)}
.footer-qr{display:flex;gap:20px}
.footer-qr-item{text-align:center}
.footer-qr-item img{width:100px;border-radius:8px;margin-bottom:8px}
.footer-qr-item span{font-size:.85rem;color:rgba(255,255,255,0.7)}
.social-links{display:flex;gap:15px;margin-top:20px}
.social-links a{width:40px;height:40px;background:rgba(255,255,255,0.1);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background .3s ease}
.social-links a:hover{background:var(--primary-color)}
.social-links svg{width:20px;height:20px;fill:var(--white)}
.footer-bottom{text-align:center;padding-top:30px;border-top:1px solid rgba(255,255,255,0.1)}
.footer-bottom p{color:rgba(255,255,255,0.6);font-size:.9rem;margin-bottom:8px}
.update-time{color:var(--primary-color)!important}
@media(max-width:1024px){.video-grid,.feature-grid,.stats-grid{grid-template-columns:repeat(2,1fr)}.expert-grid,.review-grid,.contact-grid,.tool-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.nav-menu{display:none}.mobile-menu-btn{display:flex}.hero{height:400px}.hero-content h1{font-size:2rem}.video-grid,.feature-grid,.stats-grid,.expert-grid,.review-grid,.contact-grid,.tool-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.section{padding:50px 0}}