/* ============================================
   蘑菇视频 - 原创样式表
   配色：珊瑚粉 #FF6B6B + 薰衣草紫 #C084FC + 深海蓝 #0d1117
   字体：系统字体栈
   ============================================ */

/* === 基础重置 === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:#0d1117;color:#e6e6e6;line-height:1.7;overflow-x:hidden}
a{color:#c084fc;text-decoration:none;transition:color .3s}
a:hover{color:#ff6b6b}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* === 顶部通知栏 === */
.top-notice{background:linear-gradient(90deg,#ff6b6b,#c084fc);padding:6px 0;text-align:center;font-size:13px;color:#fff;letter-spacing:1px}
.top-notice .marquee{animation:marquee 20s linear infinite}
@keyframes marquee{0%{transform:translateX(100%)}100%{transform:translateX(-100%)}}

/* === 头部导航 === */
.site-header{background:rgba(13,17,23,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(192,132,252,.15);position:sticky;top:0;z-index:1000;padding:0}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.site-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:#fff}
.site-logo img{width:40px;height:40px;border-radius:8px}
.site-logo .brand-text{background:linear-gradient(135deg,#ff6b6b,#c084fc);-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:14px;color:#b0b0b0;transition:all .3s}
.main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(192,132,252,.15)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.hamburger span{width:24px;height:2px;background:#fff;border-radius:2px;transition:all .3s}

/* === 搜索栏 === */
.search-bar{background:rgba(192,132,252,.06);border-bottom:1px solid rgba(192,132,252,.1);padding:10px 0}
.search-inner{display:flex;align-items:center;gap:10px;max-width:600px;margin:0 auto}
.search-inner input{flex:1;background:rgba(255,255,255,.08);border:1px solid rgba(192,132,252,.2);border-radius:20px;padding:8px 18px;color:#fff;font-size:14px;outline:none;transition:border-color .3s}
.search-inner input:focus{border-color:#c084fc}
.search-inner button{background:linear-gradient(135deg,#ff6b6b,#c084fc);border:none;border-radius:20px;padding:8px 20px;color:#fff;font-size:14px;cursor:pointer;transition:opacity .3s}
.search-inner button:hover{opacity:.85}
.search-tip{display:none;text-align:center;padding:6px;font-size:12px;color:#c084fc}

/* === 面包屑 === */
.breadcrumb{padding:12px 0;font-size:13px;color:#888}
.breadcrumb a{color:#c084fc}
.breadcrumb .sep{margin:0 6px;color:#555}

/* === Hero区域 === */
.hero{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.4)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,17,23,.3) 0%,rgba(13,17,23,.9) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;width:100%;padding:60px 20px}
.hero-badge{display:inline-block;background:linear-gradient(135deg,#ff6b6b,#c084fc);padding:4px 16px;border-radius:20px;font-size:12px;color:#fff;margin-bottom:16px;letter-spacing:2px}
.hero h1{font-size:42px;font-weight:800;margin-bottom:12px;line-height:1.3}
.hero h1 .hl{background:linear-gradient(135deg,#ff6b6b,#c084fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:17px;color:#bbb;max-width:650px;margin:0 auto 24px}
.hero-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;justify-content:center;margin-top:30px}
.hero-stat .num{font-size:28px;font-weight:700;color:#ff6b6b}
.hero-stat .label{font-size:13px;color:#999}

/* === 按钮 === */
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 24px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s;border:none}
.btn-primary{background:linear-gradient(135deg,#ff6b6b,#c084fc);color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(192,132,252,.3)}
.btn-ghost{background:transparent;border:1px solid rgba(192,132,252,.4);color:#c084fc}
.btn-ghost:hover{background:rgba(192,132,252,.1)}
.btn-sm{padding:6px 16px;font-size:13px;border-radius:8px}

/* === 通用Section === */
.section{padding:60px 0}
.section-sm{padding:40px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:28px;font-weight:700;margin-bottom:8px}
.section-title h2 .hl{color:#ff6b6b}
.section-title p{color:#999;font-size:15px}
.title-line{width:60px;height:3px;background:linear-gradient(90deg,#ff6b6b,#c084fc);margin:10px auto 0;border-radius:3px}
.text-center{text-align:center}

/* === 视频卡片网格 === */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}

.video-card{background:#161b22;border-radius:14px;overflow:hidden;transition:all .4s;border:1px solid rgba(192,132,252,.08)}
.video-card:hover{transform:translateY(-6px);border-color:rgba(192,132,252,.3);box-shadow:0 12px 40px rgba(192,132,252,.12)}
.video-thumb{position:relative;padding-top:133%;overflow:hidden;cursor:pointer}
.video-thumb img{position:absolute;inset: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:56px;height:56px;background:rgba(255,107,107,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .4s;z-index:3}
.play-btn-icon{width:0;height:0;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-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);padding:2px 8px;border-radius:4px;font-size:12px;color:#fff;z-index:2}
.video-tag{position:absolute;top:8px;left:8px;z-index:2}
.badge-new{background:#ff6b6b;padding:2px 10px;border-radius:4px;font-size:11px;color:#fff}
.badge-hot{background:#f59e0b;padding:2px 10px;border-radius:4px;font-size:11px;color:#fff}
.badge-free{background:#10b981;padding:2px 10px;border-radius:4px;font-size:11px;color:#fff}
.video-info{padding:14px}
.video-info h3{font-size:15px;font-weight:600;margin-bottom:6px;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:12px;color:#888}
.video-stats{display:flex;gap:10px;font-size:12px;color:#777;margin-top:6px}

/* === 分类标签筛选 === */
.filter-bar{display:flex;gap:8px;justify-content:center;margin-bottom:30px;flex-wrap:wrap}
.filter-btn{padding:6px 18px;border-radius:20px;font-size:13px;color:#999;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);cursor:pointer;transition:all .3s}
.filter-btn:hover,.filter-btn.active{color:#fff;background:linear-gradient(135deg,#ff6b6b,#c084fc);border-color:transparent}

/* === 专家卡片 === */
.expert-card{background:#161b22;border-radius:14px;padding:24px;text-align:center;border:1px solid rgba(192,132,252,.08);transition:all .3s}
.expert-card:hover{border-color:rgba(192,132,252,.3);transform:translateY(-4px)}
.expert-avatar{width:90px;height:90px;border-radius:50%;margin:0 auto 14px;border:3px solid rgba(192,132,252,.3);object-fit:cover}
.expert-name{font-size:17px;font-weight:700;margin-bottom:4px}
.expert-title{font-size:13px;color:#c084fc;margin-bottom:8px}
.expert-desc{font-size:13px;color:#999;line-height:1.6;margin-bottom:12px}
.expert-tags{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;margin-bottom:14px}
.expert-tag{padding:3px 10px;border-radius:12px;font-size:11px;background:rgba(192,132,252,.1);color:#c084fc}
.expert-btns{display:flex;gap:8px;justify-content:center}

/* === FAQ === */
.faq-item{background:#161b22;border-radius:12px;margin-bottom:10px;border:1px solid rgba(192,132,252,.08);overflow:hidden}
.faq-question{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:15px;transition:background .3s}
.faq-question:hover{background:rgba(192,132,252,.05)}
.faq-icon{font-size:20px;color:#c084fc;transition:transform .3s}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 20px;max-height:0;overflow:hidden;transition:all .4s;font-size:14px;color:#999;line-height:1.8}
.faq-item.open .faq-answer{padding:0 20px 16px;max-height:500px}

/* === 用户评论 === */
.review-card{background:#161b22;border-radius:14px;padding:20px;border:1px solid rgba(192,132,252,.08)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#ff6b6b,#c084fc);display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;font-weight:700}
.review-info .name{font-weight:600;font-size:14px}
.review-info .date{font-size:12px;color:#888}
.review-stars{color:#f59e0b;font-size:14px;margin-bottom:8px;letter-spacing:2px}
.review-text{font-size:14px;color:#ccc;line-height:1.7}

/* === 社区功能 === */
.comm-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.comm-card{background:#161b22;border-radius:14px;padding:24px 16px;text-align:center;border:1px solid rgba(192,132,252,.08);transition:all .3s}
.comm-card:hover{border-color:#ff6b6b;transform:translateY(-4px)}
.comm-icon{font-size:36px;margin-bottom:12px}
.comm-card h4{font-size:15px;font-weight:600;margin-bottom:6px}
.comm-card p{font-size:13px;color:#999}

/* === AI赋能区 === */
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ai-card{background:linear-gradient(145deg,#161b22,#1a1f2e);border-radius:14px;padding:28px;border:1px solid rgba(192,132,252,.1);transition:all .3s}
.ai-card:hover{border-color:#c084fc;box-shadow:0 0 30px rgba(192,132,252,.1)}
.ai-icon{font-size:40px;margin-bottom:14px}
.ai-card h4{font-size:16px;font-weight:600;margin-bottom:8px}
.ai-card p{font-size:13px;color:#999;line-height:1.7}

/* === 合作品牌 === */
.partner-wall{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;padding:20px 0}
.partner-item{background:#161b22;border-radius:12px;padding:16px 28px;border:1px solid rgba(192,132,252,.08);font-size:14px;font-weight:600;color:#999;transition:all .3s}
.partner-item:hover{border-color:#c084fc;color:#fff}

/* === How-To步骤 === */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.howto-step{text-align:center;padding:20px}
.step-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#ff6b6b,#c084fc);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;color:#fff;margin:0 auto 14px}
.howto-step h4{font-size:15px;font-weight:600;margin-bottom:6px}
.howto-step p{font-size:13px;color:#999}

/* === 分享栏 === */
.share-bar{display:flex;gap:10px;align-items:center;justify-content:center;padding:20px 0}
.share-label{font-size:14px;color:#999;margin-right:6px}
.share-btn{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff;cursor:pointer;transition:all .3s}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#ff5722}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#fb7299}
.share-btn:hover{transform:scale(1.15)}

/* === 弹幕层 === */
.danmaku-layer{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:9998;overflow:hidden}
.danmaku-item{position:absolute;white-space:nowrap;font-size:16px;color:rgba(255,255,255,.7);text-shadow:1px 1px 2px rgba(0,0,0,.5);animation:danmakuScroll 8s linear forwards}
@keyframes danmakuScroll{0%{transform:translateX(100vw)}100%{transform:translateX(-100%)}}

/* === 视频模态框 === */
.video-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:9999;align-items:center;justify-content:center}
.video-modal.show{display:flex}
.modal-content{background:#161b22;border-radius:16px;width:90%;max-width:800px;overflow:hidden}
.modal-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid rgba(192,132,252,.1)}
.modal-header h3{font-size:16px;font-weight:600}
.modal-close{width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:18px;color:#fff;transition:background .3s}
.modal-close:hover{background:rgba(255,107,107,.3)}
.modal-body{position:relative;padding-top:56.25%;background:#000}
.modal-body .danmaku-area{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.modal-footer{padding:12px 20px;display:flex;gap:10px;align-items:center}
.modal-footer input{flex:1;background:rgba(255,255,255,.08);border:1px solid rgba(192,132,252,.2);border-radius:20px;padding:8px 16px;color:#fff;font-size:13px;outline:none}
.modal-footer button{background:linear-gradient(135deg,#ff6b6b,#c084fc);border:none;border-radius:20px;padding:8px 18px;color:#fff;font-size:13px;cursor:pointer}

/* === 页脚 === */
.site-footer{background:#0a0d12;border-top:1px solid rgba(192,132,252,.1);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px;margin-bottom:40px}
.footer-brand .brand-name{font-size:22px;font-weight:700;background:linear-gradient(135deg,#ff6b6b,#c084fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:10px}
.footer-brand p{font-size:13px;color:#888;line-height:1.7}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:14px;color:#fff}
.footer-col a{display:block;font-size:13px;color:#888;padding:4px 0;transition:color .3s}
.footer-col a:hover{color:#c084fc}
.footer-qr{display:flex;gap:16px;margin-top:14px}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:90px;height:90px;border-radius:8px;margin-bottom:4px}
.footer-qr .qr-item span{font-size:11px;color:#888}
.footer-trust{display:flex;gap:20px;justify-content:center;padding:16px 0;border-top:1px solid rgba(192,132,252,.08);border-bottom:1px solid rgba(192,132,252,.08);margin-bottom:20px;flex-wrap:wrap}
.footer-trust span{font-size:12px;color:#666}
.footer-bottom{text-align:center;padding:16px 0;font-size:12px;color:#666}
.footer-bottom a{color:#888}

/* === 内页Hero === */
.page-hero{background:linear-gradient(135deg,#0d1117,#1a1025);padding:50px 0 30px;text-align:center;border-bottom:1px solid rgba(192,132,252,.1)}
.page-hero h1{font-size:32px;font-weight:700;margin-bottom:8px}
.page-hero p{color:#999;font-size:15px}
.page-hero .update-time{font-size:12px;color:#666;margin-top:8px}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.contact-item{background:#161b22;border-radius:14px;padding:24px;border:1px solid rgba(192,132,252,.08)}
.contact-icon{font-size:28px;margin-bottom:10px}
.contact-item h4{font-size:16px;font-weight:600;margin-bottom:6px}
.contact-item p{font-size:13px;color:#999}

/* === 直播卡片 === */
.live-card{position:relative;background:#161b22;border-radius:14px;overflow:hidden;border:1px solid rgba(192,132,252,.08)}
.live-badge{position:absolute;top:10px;left:10px;background:#ff4444;padding:3px 10px;border-radius:4px;font-size:11px;color:#fff;z-index:2;animation:livePulse 1.5s infinite}
@keyframes livePulse{0%,100%{opacity:1}50%{opacity:.6}}
.live-thumb{padding-top:56%;position:relative;overflow:hidden}
.live-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.live-info{padding:12px}
.live-info h4{font-size:14px;font-weight:600;margin-bottom:4px}
.live-viewers{font-size:12px;color:#ff6b6b}

/* === 回到顶部 === */
.back-to-top{position:fixed;bottom:30px;right:30px;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#ff6b6b,#c084fc);display:none;align-items:center;justify-content:center;cursor:pointer;z-index:999;font-size:20px;color:#fff;transition:all .3s;border:none}
.back-to-top:hover{transform:translateY(-3px);box-shadow:0 6px 20px rgba(192,132,252,.4)}
.back-to-top.show{display:flex}

/* === 动画 === */
.fade-up{opacity:1;transform:translateY(0);transition:all .6s ease}

/* === 响应式 === */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(3,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
  .comm-grid{grid-template-columns:repeat(2,1fr)}
  .ai-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#0d1117;flex-direction:column;padding:16px;border-bottom:1px solid rgba(192,132,252,.15)}
  .main-nav.open{display:flex}
  .hamburger{display:flex}
  .hero h1{font-size:28px}
  .hero{min-height:400px}
  .hero-stats{gap:20px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .comm-grid{grid-template-columns:1fr}
  .ai-grid{grid-template-columns:1fr}
  .section{padding:40px 0}
  .section-title h2{font-size:22px}
}
@media(max-width:480px){
  .grid-4{grid-template-columns:1fr}
  .hero h1{font-size:24px}
  .hero-stat .num{font-size:22px}
  .nav-wrap{padding:0 12px}
  .search-inner{padding:0 12px}
}