/* 香港三级 全新原创CSS - 影视传媒主题 */
/* 配色：深靛蓝#0f0c1e 暖橙#e57333 象牙白#f5ebdc 浅灰#b8b0a6 */
*{margin:0;padding:0;box-sizing:border-box}
:root{--pri:#e57333;--bg:#0f0c1e;--bg2:#1a1630;--bg3:#241f3a;--txt:#f5ebdc;--txt2:#b8b0a6;--card:#1e1938;--radius:10px;--shadow:0 4px 20px rgba(0,0,0,.4)}
body{font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--txt);line-height:1.7;overflow-x:hidden}
a{color:var(--pri);text-decoration:none;transition:color .3s}
a:hover{color:#f5a66e}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 导航 */
.nav{background:rgba(15,12,30,.95);backdrop-filter:blur(12px);position:fixed;top:0;left:0;width:100%;z-index:1000;border-bottom:1px solid rgba(229,115,51,.15)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto;padding:8px 20px}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo img{height:40px;width:40px;border-radius:50%}
.nav-logo span{font-size:1.3rem;font-weight:700;color:var(--txt);letter-spacing:1px}
.nav-links{display:flex;gap:24px;list-style:none;align-items:center}
.nav-links a{color:var(--txt2);font-size:.9rem;padding:6px 0;position:relative;transition:color .3s}
.nav-links a:hover,.nav-links a.active{color:var(--pri)}
.nav-links a.active::after{content:'';position:absolute;bottom:0;left:0;width:100%;height:2px;background:var(--pri);border-radius:1px}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}
.nav-toggle span{width:24px;height:2px;background:var(--txt);border-radius:2px;transition:.3s}

/* 搜索框 */
.search-bar{background:var(--bg2);padding:12px 0;border-bottom:1px solid rgba(229,115,51,.08)}
.search-wrap{max-width:600px;margin:0 auto;display:flex;gap:8px;padding:0 20px}
.search-wrap input{flex:1;padding:10px 16px;border:1px solid rgba(229,115,51,.2);border-radius:var(--radius);background:var(--bg3);color:var(--txt);font-size:.9rem;outline:none;transition:border-color .3s}
.search-wrap input:focus{border-color:var(--pri)}
.search-wrap button{padding:10px 24px;background:var(--pri);color:#fff;border:none;border-radius:var(--radius);cursor:pointer;font-size:.9rem;transition:background .3s}
.search-wrap button:hover{background:#f5a66e}

/* Hero Banner */
.hero{position:relative;height:520px;margin-top:57px;overflow:hidden;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.45)}
.hero-content{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:0 20px;width:100%}
.hero h1{font-size:2.6rem;font-weight:800;margin-bottom:12px;text-shadow:0 2px 12px rgba(0,0,0,.6)}
.hero h1 span{color:var(--pri)}
.hero p{font-size:1.1rem;color:var(--txt2);max-width:600px;line-height:1.8}
.hero-tags{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
.hero-tags a{padding:6px 16px;background:rgba(229,115,51,.15);border:1px solid rgba(229,115,51,.3);border-radius:20px;color:var(--pri);font-size:.85rem;transition:.3s}
.hero-tags a:hover{background:var(--pri);color:#fff}

/* 通用Section */
.section{padding:60px 0}
.section-alt{background:var(--bg2)}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:1.8rem;font-weight:700;margin-bottom:8px}
.section-title h2 span{color:var(--pri)}
.section-title p{color:var(--txt2);font-size:.95rem}

/* 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);border-radius:var(--radius);overflow:hidden;transition:transform .3s,box-shadow .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.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)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:56px;height:56px;background:rgba(229,115,51,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:transform .3s;z-index:3}
.play-btn::after{content:'';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)}
.video-dur{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem;z-index:3}
.video-info{padding:14px 16px}
.video-info h3{font-size:.95rem;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;color:var(--txt2);font-size:.8rem}

/* 分类标签 */
.cat-tabs{display:flex;gap:10px;margin-bottom:28px;flex-wrap:wrap;justify-content:center}
.cat-tabs a{padding:8px 20px;background:var(--bg3);border-radius:20px;color:var(--txt2);font-size:.85rem;transition:.3s;border:1px solid transparent}
.cat-tabs a:hover,.cat-tabs a.active{color:var(--pri);border-color:var(--pri);background:rgba(229,115,51,.1)}

/* 专家卡片 */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:28px}
.expert-card{background:var(--card);border-radius:var(--radius);padding:28px;text-align:center;transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card img{width:100px;height:100px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:3px solid var(--pri)}
.expert-card h3{font-size:1.1rem;margin-bottom:4px}
.expert-card .role{color:var(--pri);font-size:.85rem;margin-bottom:12px}
.expert-card p{color:var(--txt2);font-size:.85rem;line-height:1.7}
.expert-btns{display:flex;gap:10px;justify-content:center;margin-top:16px}

/* 按钮 */
.btn-primary{display:inline-block;padding:8px 20px;background:var(--pri);color:#fff;border-radius:var(--radius);font-size:.85rem;transition:.3s;border:none;cursor:pointer}
.btn-primary:hover{background:#f5a66e;color:#fff}
.btn-outline{display:inline-block;padding:8px 20px;border:1px solid var(--pri);color:var(--pri);border-radius:var(--radius);font-size:.85rem;transition:.3s}
.btn-outline:hover{background:var(--pri);color:#fff}

/* 合作品牌墙 */
.brand-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.brand-wall .brand-item{background:var(--bg3);padding:16px 28px;border-radius:var(--radius);color:var(--txt2);font-size:.9rem;font-weight:600;border:1px solid rgba(229,115,51,.1);transition:.3s}
.brand-wall .brand-item:hover{border-color:var(--pri);color:var(--pri)}

/* HowTo步骤 */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.howto-step{background:var(--card);border-radius:var(--radius);padding:28px;text-align:center;position:relative}
.step-num{width:44px;height:44px;background:var(--pri);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem;margin:0 auto 14px}
.howto-step h4{font-size:1rem;margin-bottom:8px}
.howto-step p{color:var(--txt2);font-size:.85rem}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--card);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;transition:background .3s}
.faq-q:hover{background:var(--bg3)}
.faq-q::after{content:'+';font-size:1.4rem;color:var(--pri);transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .4s,padding .4s;color:var(--txt2);font-size:.9rem;line-height:1.8}
.faq-item.open .faq-a{max-height:300px;padding:0 24px 18px}

/* 评论 */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.review-card{background:var(--card);border-radius:var(--radius);padding:24px}
.review-stars{color:var(--pri);margin-bottom:10px;font-size:1rem}
.review-card p{color:var(--txt2);font-size:.9rem;line-height:1.7;margin-bottom:12px;font-style:italic}
.review-author{font-weight:600;font-size:.85rem}

/* 联系信息 */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:28px}
.contact-card{background:var(--card);border-radius:var(--radius);padding:28px}
.contact-card h3{font-size:1.1rem;margin-bottom:16px;color:var(--pri)}
.info-row{padding:8px 0;border-bottom:1px solid rgba(229,115,51,.08);font-size:.9rem;color:var(--txt2)}
.info-row strong{color:var(--txt);margin-right:12px}

/* 二维码 */
.qr-grid{display:flex;gap:40px;justify-content:center;flex-wrap:wrap}
.qr-item{text-align:center}
.qr-item img{width:140px;height:140px;border-radius:var(--radius);margin-bottom:8px}
.qr-item span{font-size:.85rem;color:var(--txt2)}

/* 社交分享 */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.share-bar a{padding:8px 18px;background:var(--bg3);border-radius:20px;color:var(--txt2);font-size:.85rem;transition:.3s;border:1px solid rgba(229,115,51,.1)}
.share-bar a:hover{color:var(--pri);border-color:var(--pri)}

/* 页脚 */
.footer{background:var(--bg2);border-top:1px solid rgba(229,115,51,.1);padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{font-size:1rem;margin-bottom:14px;color:var(--pri)}
.footer-col p,.footer-col a{color:var(--txt2);font-size:.85rem;line-height:2}
.footer-col a:hover{color:var(--pri)}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(229,115,51,.08);color:var(--txt2);font-size:.8rem}

/* 面包屑 */
.breadcrumb{padding:14px 0;font-size:.85rem;color:var(--txt2)}
.breadcrumb a{color:var(--pri)}
.breadcrumb span{margin:0 6px}

/* 页面头部 */
.page-header{background:linear-gradient(135deg,var(--bg2),var(--bg3));padding:80px 0 40px;text-align:center;margin-top:57px}
.page-header h1{font-size:2rem;font-weight:700;margin-bottom:8px}
.page-header h1 span{color:var(--pri)}
.page-header p{color:var(--txt2);font-size:.95rem}

/* 社区功能模块 */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:18px}
.feature-item{background:var(--card);border-radius:var(--radius);padding:22px;text-align:center;transition:.3s;border:1px solid transparent}
.feature-item:hover{border-color:var(--pri);transform:translateY(-3px)}
.feature-icon{font-size:2rem;margin-bottom:10px}
.feature-item h4{font-size:.9rem;margin-bottom:6px}
.feature-item p{color:var(--txt2);font-size:.8rem}

/* 干扰标签隐藏 */
.jrb{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}

/* 响应式 */
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:100%;left:0;width:100%;background:rgba(15,12,30,.98);flex-direction:column;padding:20px;gap:16px}
  .nav-links.show{display:flex}
  .nav-toggle{display:flex}
  .hero{height:400px;margin-top:57px}
  .hero h1{font-size:1.6rem}
  .section{padding:40px 0}
  .section-title h2{font-size:1.4rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
  .expert-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .page-header{padding:70px 0 30px}
  .page-header h1{font-size:1.5rem}
}
@media(max-width:480px){
  .hero{height:320px}
  .hero h1{font-size:1.3rem}
  .video-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
}