/* ============================================
   17c 影视传媒 - 原创样式表
   品牌色系：深夜蓝 #0d1b2a | 星辉金 #d4a843 | 暗钢灰 #1b2838
   辅助色：霓虹青 #00d4ff | 暮光紫 #6c3fa0 | 珊瑚红 #e8634a
   ============================================ */

/* === 基础重置 === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#e0e0e0;background:#0d1b2a;line-height:1.75;overflow-x:hidden}
a{color:#d4a843;text-decoration:none;transition:color .3s}
a:hover{color:#00d4ff}
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:#fff}

/* === 容器 === */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
.section-padding{padding:60px 0}

/* === 头部导航 === */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(13,27,42,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(212,168,67,.15);transition:all .3s}
.site-header.scrolled{background:rgba(13,27,42,.98);box-shadow:0 2px 20px rgba(0,0,0,.5)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;max-width:1280px;margin:0 auto;padding:0 20px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-wrap .brand-text{font-size:1.5rem;font-weight:800;color:#d4a843;letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 14px;font-size:.9rem;color:#c0c0c0;border-radius:6px;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#d4a843;background:rgba(212,168,67,.1)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#d4a843;transition:all .3s}

/* === 搜索框 === */
.search-bar{background:rgba(27,40,56,.8);border-bottom:1px solid rgba(212,168,67,.1);padding:12px 0}
.search-bar-inner{max-width:1280px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:12px}
.search-input-wrap{flex:1;position:relative;max-width:600px}
.search-input-wrap input{width:100%;padding:10px 44px 10px 16px;background:rgba(255,255,255,.06);border:1px solid rgba(212,168,67,.2);border-radius:25px;color:#e0e0e0;font-size:.9rem;outline:none;transition:all .3s}
.search-input-wrap input:focus{border-color:#d4a843;background:rgba(255,255,255,.1)}
.search-input-wrap input::placeholder{color:#666}
.search-btn{position:absolute;right:4px;top:50%;transform:translateY(-50%);background:#d4a843;border:none;color:#0d1b2a;width:34px;height:34px;border-radius:50%;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:background .3s}
.search-btn:hover{background:#00d4ff}
.search-hot{display:flex;gap:8px;align-items:center;font-size:.8rem;color:#888}
.search-hot a{color:#999;padding:2px 10px;background:rgba(255,255,255,.04);border-radius:12px;font-size:.75rem;transition:all .3s}
.search-hot a:hover{color:#d4a843;background:rgba(212,168,67,.1)}

/* === Hero Banner === */
.hero-banner{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden;margin-top:70px}
.hero-banner .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.55)}
.hero-banner .hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(13,27,42,.92) 0%,rgba(13,27,42,.6) 50%,rgba(108,63,160,.3) 100%)}
.hero-content{position:relative;z-index:2;max-width:680px;padding:40px 0}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;background:linear-gradient(135deg,#d4a843,#00d4ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content .hero-subtitle{font-size:1.15rem;color:#bbb;margin-bottom:24px;line-height:1.8}
.hero-content .hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.hero-content .hero-tags span{padding:5px 14px;background:rgba(212,168,67,.12);border:1px solid rgba(212,168,67,.25);border-radius:20px;font-size:.8rem;color:#d4a843}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;background:linear-gradient(135deg,#d4a843,#b8912e);color:#0d1b2a;font-weight:700;border-radius:8px;font-size:.95rem;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(212,168,67,.35);color:#0d1b2a}
.btn-outline{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border:1px solid rgba(212,168,67,.4);color:#d4a843;border-radius:8px;font-size:.95rem;transition:all .3s;background:transparent;cursor:pointer}
.btn-outline:hover{background:rgba(212,168,67,.1);border-color:#d4a843;color:#d4a843}

/* === 通用区块标题 === */
.section-header{text-align:center;margin-bottom:45px}
.section-header h2{font-size:2rem;margin-bottom:10px;color:#fff}
.section-header h2 .gold{color:#d4a843}
.section-header p{color:#999;font-size:1rem;max-width:600px;margin:0 auto}
.section-header .line{width:60px;height:3px;background:linear-gradient(90deg,#d4a843,#00d4ff);margin:14px auto 0;border-radius:2px}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.video-card{background:#1b2838;border-radius:12px;overflow:hidden;transition:all .4s;position:relative;border:1px solid rgba(255,255,255,.04)}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,.4);border-color:rgba(212,168,67,.2)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;cursor:pointer}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.video-play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;background:rgba(0,0,0,.35)}
.video-card:hover .video-play-btn{opacity:1}
.video-play-btn .play-icon{width:56px;height:56px;background:rgba(212,168,67,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .3s}
.video-play-btn .play-icon::after{content:"";display:block;width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #0d1b2a;margin-left:3px}
.video-card:hover .play-icon{transform:scale(1.1);background:rgba(212,168,67,1)}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.8);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:16px}
.video-info h3{font-size:1rem;margin-bottom:8px;color:#eee;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:14px;font-size:.8rem;color:#888}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tags{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.video-tags a{font-size:.7rem;padding:2px 8px;background:rgba(212,168,67,.08);border:1px solid rgba(212,168,67,.15);border-radius:10px;color:#d4a843}

/* === H5 Video 标签 === */
.video-thumb video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.video-thumb video+img{position:relative;z-index:1}
.video-thumb .video-h5-wrap{position:absolute;inset:0;z-index:0}
.video-thumb .video-h5-wrap video{width:100%;height:100%;object-fit:cover}

/* === 明星卡片 === */
.star-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}
.star-card{background:#1b2838;border-radius:12px;overflow:hidden;text-align:center;transition:all .4s;border:1px solid rgba(255,255,255,.04)}
.star-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(0,0,0,.4);border-color:rgba(212,168,67,.2)}
.star-card .star-img{aspect-ratio:3/4;overflow:hidden}
.star-card .star-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.star-card:hover .star-img img{transform:scale(1.06)}
.star-card .star-name{padding:14px;font-size:.95rem;font-weight:600;color:#eee}
.star-card .star-role{font-size:.8rem;color:#d4a843;padding-bottom:14px}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.expert-card{background:#1b2838;border-radius:12px;padding:28px;text-align:center;transition:all .4s;border:1px solid rgba(255,255,255,.04)}
.expert-card:hover{border-color:rgba(212,168,67,.2);box-shadow:0 8px 30px rgba(0,0,0,.3)}
.expert-card .expert-avatar{width:100px;height:100px;border-radius:50%;overflow:hidden;margin:0 auto 16px;border:3px solid rgba(212,168,67,.3)}
.expert-card .expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:1.1rem;color:#fff;margin-bottom:4px}
.expert-card .expert-title{font-size:.85rem;color:#d4a843;margin-bottom:12px}
.expert-card p{font-size:.85rem;color:#999;line-height:1.6;margin-bottom:16px}
.expert-card .expert-btns{display:flex;gap:10px;justify-content:center}
.expert-card .expert-btns a{padding:6px 16px;border-radius:6px;font-size:.8rem}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#1b2838;border-radius:10px;margin-bottom:12px;overflow:hidden;border:1px solid rgba(255,255,255,.04);transition:border-color .3s}
.faq-item:hover{border-color:rgba(212,168,67,.15)}
.faq-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#eee;font-size:.95rem;transition:color .3s}
.faq-question:hover{color:#d4a843}
.faq-question .faq-icon{width:24px;height:24px;display:flex;align-items:center;justify-content:center;transition:transform .3s;color:#d4a843;font-size:1.2rem;flex-shrink:0}
.faq-item.active .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s ease;color:#999;font-size:.9rem;line-height:1.8}
.faq-item.active .faq-answer{padding:0 24px 18px;max-height:500px}

/* === 用户评论 === */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.review-card{background:#1b2838;border-radius:12px;padding:24px;border:1px solid rgba(255,255,255,.04);transition:all .3s}
.review-card:hover{border-color:rgba(212,168,67,.15)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#d4a843,#6c3fa0);display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:1rem;flex-shrink:0}
.review-user .review-name{font-size:.9rem;font-weight:600;color:#eee}
.review-user .review-date{font-size:.75rem;color:#888}
.review-stars{color:#d4a843;font-size:.85rem;margin-bottom:10px;letter-spacing:2px}
.review-text{font-size:.88rem;color:#bbb;line-height:1.7}

/* === 合作品牌墙 === */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-wall .partner-item{width:120px;height:60px;background:rgba(255,255,255,.04);border-radius:8px;display:flex;align-items:center;justify-content:center;padding:10px;transition:all .3s;border:1px solid rgba(255,255,255,.04)}
.partner-wall .partner-item:hover{background:rgba(212,168,67,.08);border-color:rgba(212,168,67,.2)}
.partner-wall .partner-item span{color:#888;font-size:.8rem;font-weight:600}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.contact-card{background:#1b2838;border-radius:12px;padding:28px;text-align:center;border:1px solid rgba(255,255,255,.04);transition:all .3s}
.contact-card:hover{border-color:rgba(212,168,67,.15)}
.contact-card .contact-icon{font-size:2rem;margin-bottom:12px;color:#d4a843}
.contact-card h4{font-size:1rem;color:#fff;margin-bottom:8px}
.contact-card p{font-size:.85rem;color:#999;line-height:1.6}

/* === 社交分享 === */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:8px;font-size:.85rem;color:#fff;transition:all .3s;border:1px solid rgba(255,255,255,.1)}
.share-btn:hover{transform:translateY(-2px);color:#fff}
.share-btn.wechat{background:rgba(7,193,96,.15);border-color:rgba(7,193,96,.3)}
.share-btn.wechat:hover{background:rgba(7,193,96,.25)}
.share-btn.weibo{background:rgba(230,73,45,.15);border-color:rgba(230,73,45,.3)}
.share-btn.weibo:hover{background:rgba(230,73,45,.25)}
.share-btn.douyin{background:rgba(37,37,37,.3);border-color:rgba(255,255,255,.15)}
.share-btn.douyin:hover{background:rgba(37,37,37,.5)}
.share-btn.bilibili{background:rgba(0,174,236,.15);border-color:rgba(0,174,236,.3)}
.share-btn.bilibili:hover{background:rgba(0,174,236,.25)}

/* === 页脚 === */
.site-footer{background:#0a1420;border-top:1px solid rgba(212,168,67,.1);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;margin-bottom:40px}
.footer-col h4{font-size:1rem;color:#d4a843;margin-bottom:16px;font-weight:600}
.footer-col p,.footer-col a{font-size:.85rem;color:#888;line-height:2}
.footer-col a:hover{color:#d4a843}
.footer-col .footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-col .footer-logo img{height:36px}
.footer-qr{display:flex;gap:16px;margin-top:14px}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:100px;height:100px;border-radius:8px;border:1px solid rgba(212,168,67,.15)}
.footer-qr .qr-item p{font-size:.75rem;color:#888;margin-top:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.05);padding:20px 0;text-align:center;font-size:.8rem;color:#666}
.footer-bottom a{color:#888}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#888}
.breadcrumb a{color:#999}
.breadcrumb a:hover{color:#d4a843}
.breadcrumb span{margin:0 8px;color:#555}

/* === 内页通用 === */
.page-hero{padding:100px 0 40px;background:linear-gradient(180deg,rgba(27,40,56,.6) 0%,#0d1b2a 100%);text-align:center}
.page-hero h1{font-size:2.2rem;margin-bottom:10px}
.page-hero p{color:#999;font-size:1rem}
.content-section{padding:40px 0}
.content-section article{max-width:900px;margin:0 auto;font-size:.95rem;color:#ccc;line-height:2}
.content-section article h2{font-size:1.5rem;color:#fff;margin:30px 0 14px;padding-left:14px;border-left:3px solid #d4a843}
.content-section article h3{font-size:1.2rem;color:#eee;margin:24px 0 10px}
.content-section article p{margin-bottom:16px}

/* === How-To指南 === */
.howto-steps{max-width:700px;margin:0 auto}
.howto-step{display:flex;gap:20px;margin-bottom:28px;align-items:flex-start}
.howto-step .step-num{width:44px;height:44px;background:linear-gradient(135deg,#d4a843,#b8912e);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;color:#0d1b2a;font-size:1.1rem;flex-shrink:0}
.howto-step .step-content h4{font-size:1rem;color:#eee;margin-bottom:6px}
.howto-step .step-content p{font-size:.88rem;color:#999;line-height:1.7}

/* === 模块间距 === */
.bg-dark{background:#0a1420}
.bg-alt{background:#111d2e}
.text-gold{color:#d4a843}
.text-cyan{color:#00d4ff}
.mt-20{margin-top:20px}
.mb-20{margin-bottom:20px}

/* === 响应式 === */
@media(max-width:992px){
  .main-nav{position:fixed;top:70px;left:0;width:100%;background:rgba(13,27,42,.98);flex-direction:column;padding:20px;gap:4px;transform:translateY(-120%);transition:transform .4s;border-bottom:1px solid rgba(212,168,67,.1)}
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:12px 16px;width:100%;text-align:left;border-radius:8px}
  .nav-toggle{display:flex}
  .hero-content h1{font-size:2rem}
  .hero-banner{min-height:420px}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
  .star-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
}
@media(max-width:640px){
  .hero-content h1{font-size:1.6rem}
  .hero-banner{min-height:360px}
  .section-header h2{font-size:1.5rem}
  .video-grid{grid-template-columns:1fr}
  .star-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .search-hot{display:none}
  .hero-btns{flex-direction:column}
  .btn-primary,.btn-outline{width:100%;justify-content:center}
}

/* === 懒加载 === */
img[loading="lazy"]{opacity:0;transition:opacity .5s}
img[loading="lazy"].loaded,img[loading="lazy"][src]{opacity:1}

/* === 动画 === */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.animate-in{animation:fadeInUp .6s ease forwards;opacity:0}
.delay-1{animation-delay:.1s}
.delay-2{animation-delay:.2s}
.delay-3{animation-delay:.3s}
.delay-4{animation-delay:.4s}