*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;color:#2d3436;background:#f8f9fa;line-height:1.8;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:color .3s}
a:hover{color:#ff6b35}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.site-header{background:linear-gradient(135deg,#0a1628 0%,#1a1a3e 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 20px rgba(0,0,0,.3)}
.header-top{display:flex;align-items:center;justify-content:space-between;padding:10px 0}
.logo-wrap{display:flex;align-items:center;gap:12px}
.logo-wrap img{height:48px;width:auto}
.logo-wrap .brand-name{font-size:1.5rem;font-weight:700;color:#fff;letter-spacing:2px}
.logo-wrap .brand-sub{font-size:.75rem;color:rgba(255,255,255,.6);display:block}
.nav-main{background:rgba(255,255,255,.05);border-top:1px solid rgba(255,255,255,.1)}
.nav-main ul{display:flex;justify-content:center;gap:0}
.nav-main li{position:relative}
.nav-main a{display:block;padding:14px 24px;color:rgba(255,255,255,.85);font-size:.95rem;font-weight:500;transition:all .3s;border-bottom:3px solid transparent}
.nav-main a:hover,.nav-main a.active{color:#ff6b35;border-bottom-color:#ff6b35;background:rgba(255,107,53,.08)}
.mobile-menu-btn{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:8px}
.search-bar{background:linear-gradient(90deg,#0a1628 0%,#1a1a3e 50%,#0a1628 100%);padding:16px 0;border-bottom:1px solid rgba(255,255,255,.08)}
.search-wrap{max-width:680px;margin:0 auto;display:flex;gap:0}
.search-wrap input{flex:1;padding:12px 20px;border:2px solid rgba(255,107,53,.4);border-right:none;border-radius:25px 0 0 25px;background:rgba(255,255,255,.08);color:#fff;font-size:.95rem;outline:none;transition:border-color .3s}
.search-wrap input::placeholder{color:rgba(255,255,255,.4)}
.search-wrap input:focus{border-color:#ff6b35;background:rgba(255,255,255,.12)}
.search-wrap button{padding:12px 28px;background:linear-gradient(135deg,#ff6b35,#e55a2b);color:#fff;border:none;border-radius:0 25px 25px 0;font-size:.95rem;cursor:pointer;transition:all .3s;font-weight:600}
.search-wrap button:hover{background:linear-gradient(135deg,#e55a2b,#d04a1b)}
.hero{position:relative;min-height:560px;display:flex;align-items:center;justify-content:center;background-size:cover;background-position:center;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,22,40,.92) 0%,rgba(108,92,231,.6) 50%,rgba(255,107,53,.4) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;color:#fff;max-width:800px;padding:40px 20px}
.hero-content h1{font-size:3rem;font-weight:800;margin-bottom:16px;text-shadow:0 2px 10px rgba(0,0,0,.3);line-height:1.3}
.hero-content h1 span{color:#ff6b35}
.hero-content .hero-desc{font-size:1.2rem;color:rgba(255,255,255,.85);margin-bottom:30px;line-height:1.8}
.hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:30px}
.hero-tags span{padding:6px 16px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:20px;font-size:.85rem;color:rgba(255,255,255,.9);backdrop-filter:blur(4px)}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{display:inline-block;padding:14px 36px;background:linear-gradient(135deg,#ff6b35,#e55a2b);color:#fff;border-radius:30px;font-weight:600;font-size:1rem;transition:all .3s;box-shadow:0 4px 15px rgba(255,107,53,.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(255,107,53,.5);color:#fff}
.btn-outline{display:inline-block;padding:14px 36px;border:2px solid rgba(255,255,255,.5);color:#fff;border-radius:30px;font-weight:600;font-size:1rem;transition:all .3s}
.btn-outline:hover{background:rgba(255,255,255,.15);border-color:#fff;color:#fff}
.section{padding:70px 0}
.section-dark{background:linear-gradient(180deg,#0a1628,#1a1a3e);color:#fff}
.section-gray{background:#f0f2f5}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:2rem;font-weight:700;color:#0a1628;margin-bottom:10px;position:relative;display:inline-block}
.section-dark .section-title h2{color:#fff}
.section-title h2::after{content:'';display:block;width:60px;height:4px;background:linear-gradient(90deg,#ff6b35,#6c5ce7);margin:12px auto 0;border-radius:2px}
.section-title p{color:#636e72;font-size:1rem;max-width:600px;margin:0 auto}
.section-dark .section-title p{color:rgba(255,255,255,.6)}
.breadcrumb{padding:15px 0;font-size:.85rem;color:#636e72}
.breadcrumb a{color:#ff6b35}
.breadcrumb span{margin:0 8px}
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.video-card{position:relative;border-radius:12px;overflow:hidden;background:#fff;box-shadow:0 4px 20px rgba(0,0,0,.08);transition:all .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,.15)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:60px;height:60px;background:rgba(255,107,53,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .4s;box-shadow:0 4px 20px rgba(255,107,53,.5)}
.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:4px}
.video-card:hover .play-btn{transform:translate(-50%,-50%) scale(1)}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:14px 16px}
.video-info h3{font-size:.95rem;font-weight:600;color:#2d3436;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:12px;font-size:.8rem;color:#b2bec3}
.video-meta .views::before{content:'▶ '}
.video-meta .likes::before{content:'♥ '}
.video-tag{display:inline-block;padding:2px 8px;background:rgba(108,92,231,.1);color:#6c5ce7;border-radius:4px;font-size:.7rem;margin-top:6px}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.service-card{background:#fff;border-radius:16px;padding:36px 28px;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:all .3s;border:1px solid rgba(0,0,0,.04)}
.service-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,.12);border-color:rgba(255,107,53,.2)}
.service-icon{width:72px;height:72px;margin:0 auto 20px;background:linear-gradient(135deg,#ff6b35,#6c5ce7);border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:2rem;color:#fff}
.service-card h3{font-size:1.15rem;font-weight:700;color:#0a1628;margin-bottom:10px}
.service-card p{font-size:.9rem;color:#636e72;line-height:1.7}
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.expert-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:all .3s;text-align:center}
.expert-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,.12)}
.expert-avatar{width:120px;height:120px;border-radius:50%;margin:28px auto 16px;overflow:hidden;border:4px solid rgba(255,107,53,.2)}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h3{font-size:1.1rem;font-weight:700;color:#0a1628;margin-bottom:4px}
.expert-card .expert-title{font-size:.85rem;color:#ff6b35;margin-bottom:8px}
.expert-card .expert-desc{font-size:.85rem;color:#636e72;padding:0 20px;margin-bottom:16px;line-height:1.6}
.expert-card .expert-awards{font-size:.78rem;color:#6c5ce7;padding:0 16px;margin-bottom:16px}
.expert-btns{display:flex;gap:8px;justify-content:center;padding:0 16px 24px}
.expert-btns a{padding:8px 16px;border-radius:20px;font-size:.8rem;font-weight:600;transition:all .3s}
.expert-btns .btn-contact{background:linear-gradient(135deg,#ff6b35,#e55a2b);color:#fff}
.expert-btns .btn-works{background:rgba(108,92,231,.1);color:#6c5ce7}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:12px;margin-bottom:12px;box-shadow:0 2px 10px rgba(0,0,0,.04);overflow:hidden;border:1px solid rgba(0,0,0,.04)}
.faq-question{padding:20px 24px;font-weight:600;color:#0a1628;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:all .3s;font-size:.95rem}
.faq-question:hover{color:#ff6b35}
.faq-question::after{content:'+';font-size:1.5rem;color:#ff6b35;transition:transform .3s;font-weight:300}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-answer-inner{padding:0 24px 20px;font-size:.9rem;color:#636e72;line-height:1.8}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:#fff;border-radius:16px;padding:28px;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:all .3s}
.review-card:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(0,0,0,.1)}
.review-stars{color:#ff6b35;font-size:1rem;margin-bottom:12px;letter-spacing:2px}
.review-text{font-size:.9rem;color:#2d3436;line-height:1.8;margin-bottom:16px;font-style:italic}
.review-author{display:flex;align-items:center;gap:12px}
.review-author-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#ff6b35,#6c5ce7);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1rem}
.review-author-info .name{font-weight:600;font-size:.9rem;color:#0a1628}
.review-author-info .role{font-size:.78rem;color:#b2bec3}
.partner-logos{display:flex;flex-wrap:wrap;justify-content:center;gap:40px;align-items:center;padding:20px 0}
.partner-logo{width:140px;height:60px;background:rgba(0,0,0,.03);border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;color:#b2bec3;font-size:.85rem;transition:all .3s;border:1px solid rgba(0,0,0,.06)}
.partner-logo:hover{background:rgba(255,107,53,.05);border-color:rgba(255,107,53,.2);color:#ff6b35}
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:36px}
.contact-card{background:#fff;border-radius:16px;padding:36px;box-shadow:0 4px 20px rgba(0,0,0,.06)}
.contact-card h3{font-size:1.2rem;font-weight:700;color:#0a1628;margin-bottom:20px;padding-bottom:12px;border-bottom:2px solid rgba(255,107,53,.2)}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px;font-size:.9rem;color:#636e72}
.contact-item strong{color:#2d3436;min-width:80px}
.qr-codes{display:flex;gap:24px;margin-top:20px}
.qr-item{text-align:center}
.qr-item img{width:140px;height:140px;border-radius:8px;border:1px solid #eee}
.qr-item p{font-size:.8rem;color:#636e72;margin-top:8px}
.share-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:25px;font-size:.85rem;font-weight:600;color:#fff;transition:all .3s}
.share-btn:hover{transform:translateY(-2px);color:#fff}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#161823}
.share-bilibili{background:#00a1d6}
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.howto-step{text-align:center;padding:28px 20px;background:#fff;border-radius:16px;box-shadow:0 4px 20px rgba(0,0,0,.06);position:relative;counter-increment:step}
.howto-step::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:48px;height:48px;background:linear-gradient(135deg,#ff6b35,#6c5ce7);color:#fff;border-radius:50%;font-size:1.2rem;font-weight:700;margin:0 auto 16px}
.howto-step h4{font-size:1rem;font-weight:700;color:#0a1628;margin-bottom:8px}
.howto-step p{font-size:.85rem;color:#636e72;line-height:1.6}
.ent-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ent-card{position:relative;border-radius:16px;overflow:hidden;height:280px}
.ent-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.ent-card:hover img{transform:scale(1.1)}
.ent-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.8) 0%,transparent 60%);display:flex;flex-direction:column;justify-content:flex-end;padding:24px}
.ent-overlay h3{color:#fff;font-size:1.1rem;font-weight:700;margin-bottom:4px}
.ent-overlay p{color:rgba(255,255,255,.7);font-size:.85rem}
.ai-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.ai-content h3{font-size:1.5rem;font-weight:700;color:#fff;margin-bottom:16px}
.ai-content p{color:rgba(255,255,255,.7);font-size:.95rem;line-height:1.8;margin-bottom:20px}
.ai-features{display:flex;flex-wrap:wrap;gap:10px}
.ai-feature-tag{padding:8px 16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);border-radius:20px;color:rgba(255,255,255,.85);font-size:.85rem}
.ai-image{border-radius:16px;overflow:hidden;box-shadow:0 8px 40px rgba(0,0,0,.3)}
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.community-card{background:linear-gradient(135deg,rgba(255,255,255,.08),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:32px 24px;text-align:center;transition:all .3s;backdrop-filter:blur(4px)}
.community-card:hover{background:rgba(255,255,255,.12);transform:translateY(-4px)}
.community-icon{font-size:2.5rem;margin-bottom:16px}
.community-card h3{font-size:1.05rem;font-weight:700;color:#fff;margin-bottom:8px}
.community-card p{font-size:.85rem;color:rgba(255,255,255,.6);line-height:1.6}
.star-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.star-card{border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 4px 20px rgba(0,0,0,.08);transition:all .3s}
.star-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,.15)}
.star-card img{width:100%;height:320px;object-fit:cover;transition:transform .5s}
.star-card:hover img{transform:scale(1.05)}
.star-info{padding:20px 24px}
.star-info h3{font-size:1.1rem;font-weight:700;color:#0a1628;margin-bottom:8px}
.star-info p{font-size:.9rem;color:#636e72;line-height:1.6}
.site-footer{background:linear-gradient(135deg,#0a1628 0%,#0d1b2a 100%);color:rgba(255,255,255,.6);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .brand-name{font-size:1.3rem;font-weight:700;color:#fff;margin-bottom:12px}
.footer-brand p{font-size:.85rem;line-height:1.8;margin-bottom:16px}
.footer-col h4{color:#fff;font-size:1rem;font-weight:700;margin-bottom:16px;position:relative;padding-bottom:8px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:#ff6b35}
.footer-col a{display:block;padding:4px 0;font-size:.85rem;transition:all .3s}
.footer-col a:hover{color:#ff6b35;padding-left:6px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:20px 0;font-size:.8rem;flex-wrap:wrap;gap:10px}
.footer-bottom .update-time{color:rgba(255,255,255,.4)}
@media(max-width:1024px){
.video-grid{grid-template-columns:repeat(3,1fr)}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:repeat(2,1fr)}
.howto-steps{grid-template-columns:repeat(2,1fr)}
.star-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
.mobile-menu-btn{display:block}
.nav-main ul{display:none;flex-direction:column}
.nav-main.open ul{display:flex}
.nav-main a{padding:12px 20px;border-bottom:1px solid rgba(255,255,255,.05)}
.hero-content h1{font-size:2rem}
.video-grid{grid-template-columns:repeat(2,1fr)}
.service-grid,.review-grid,.contact-grid{grid-template-columns:1fr}
.expert-grid,.community-grid{grid-template-columns:repeat(2,1fr)}
.ai-grid,.ent-grid,.footer-grid,.howto-steps,.star-grid{grid-template-columns:1fr}
.hero{min-height:420px}
.section{padding:50px 0}
}
@media(max-width:480px){
.video-grid,.expert-grid,.community-grid{grid-template-columns:1fr}
.hero-content h1{font-size:1.6rem}
.header-top{padding:8px 0}
.logo-wrap img{height:36px}
.logo-wrap .brand-name{font-size:1.2rem}
.star-card img{height:200px}
}
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.animate-in{animation:fadeInUp .6s ease forwards}