/* ===== 蘑菇视频 - 现代极简高端风格 ===== */
:root {
  --primary: #1a6b3c;
  --primary-light: #2d9e5f;
  --primary-dark: #0f4526;
  --accent: #4caf7d;
  --bg: #ffffff;
  --bg-soft: #f7f9f7;
  --bg-card: #ffffff;
  --text-main: #1a1a1a;
  --text-sub: #555;
  --text-muted: #999;
  --border: #e8ede9;
  --shadow: 0 4px 24px rgba(26,107,60,0.08);
  --shadow-hover: 0 12px 40px rgba(26,107,60,0.18);
  --radius: 14px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--text-main);background:var(--bg);line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}

/* ===== 通用工具类 ===== */
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-sm{padding:48px 0}
.text-center{text-align:center}
.flex{display:flex}
.flex-center{display:flex;align-items:center;justify-content:center}
.grid{display:grid}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:50px;font-size:15px;font-weight:600;letter-spacing:0.5px;transition:var(--transition);cursor:pointer}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 16px rgba(26,107,60,0.25)}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 8px 28px rgba(26,107,60,0.35);transform:translateY(-2px)}
.btn-outline{border:2px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-ghost{color:var(--primary);background:rgba(26,107,60,0.06);padding:10px 24px}
.btn-ghost:hover{background:rgba(26,107,60,0.12)}

/* ===== 标题系统 ===== */
.section-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--primary);background:rgba(26,107,60,0.08);padding:5px 14px;border-radius:50px;margin-bottom:16px}
.section-title{font-size:clamp(26px,4vw,40px);font-weight:700;color:var(--text-main);line-height:1.25;margin-bottom:16px}
.section-desc{font-size:16px;color:var(--text-sub);max-width:560px;margin:0 auto 48px}

/* ===== 顶部导航 ===== */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,0.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);transition:var(--transition)}
.navbar.scrolled{box-shadow:0 2px 20px rgba(0,0,0,0.06)}
.navbar-inner{display:flex;align-items:center;justify-content:space-between;height:70px;max-width:1200px;margin:0 auto;padding:0 24px}
.navbar-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--primary)}
.navbar-logo img{width:36px;height:36px;border-radius:8px;object-fit:cover}
.navbar-logo span{letter-spacing:-0.5px}
.navbar-nav{display:flex;align-items:center;gap:4px}
.navbar-nav a{padding:8px 16px;border-radius:8px;font-size:14px;font-weight:500;color:var(--text-sub);transition:var(--transition)}
.navbar-nav a:hover,.navbar-nav a.active{color:var(--primary);background:rgba(26,107,60,0.07)}
.navbar-actions{display:flex;align-items:center;gap:12px}
.navbar-actions .btn{padding:9px 22px;font-size:14px}
.hamburger{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer}
.hamburger span{display:block;width:22px;height:2px;background:var(--text-main);border-radius:2px;transition:var(--transition)}

/* ===== 搜索栏 ===== */
.search-bar-wrap{background:var(--bg-soft);border-bottom:1px solid var(--border);padding:12px 0;margin-top:70px}
.search-bar-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:12px}
.search-form{display:flex;align-items:center;flex:1;max-width:600px;background:#fff;border:1.5px solid var(--border);border-radius:50px;overflow:hidden;transition:var(--transition)}
.search-form:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,107,60,0.1)}
.search-form input{flex:1;border:none;outline:none;padding:10px 20px;font-size:14px;font-family:var(--font);color:var(--text-main);background:transparent}
.search-form input::placeholder{color:var(--text-muted)}
.search-form button{padding:10px 20px;background:var(--primary);color:#fff;font-size:14px;font-weight:600;border-radius:50px;margin:3px;transition:var(--transition)}
.search-form button:hover{background:var(--primary-dark)}
.search-tags{display:flex;gap:8px;flex-wrap:wrap}
.search-tag{font-size:12px;color:var(--text-muted);padding:4px 12px;border:1px solid var(--border);border-radius:50px;cursor:pointer;transition:var(--transition)}
.search-tag:hover{border-color:var(--primary);color:var(--primary)}

/* ===== 首屏Banner ===== */
.hero{position:relative;min-height:88vh;display:flex;align-items:center;overflow:hidden;background:#0a2e1a}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0.45;transition:opacity 1s}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,46,26,0.82) 0%,rgba(26,107,60,0.45) 100%)}
.hero-content{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:2px;text-transform:uppercase;color:rgba(255,255,255,0.7);margin-bottom:24px}
.hero-eyebrow::before{content:'';display:block;width:24px;height:2px;background:var(--accent)}
.hero h1{font-size:clamp(36px,6vw,72px);font-weight:800;color:#fff;line-height:1.15;margin-bottom:24px;letter-spacing:-1px}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-desc{font-size:18px;color:rgba(255,255,255,0.75);max-width:540px;margin-bottom:40px;line-height:1.8}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-actions .btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 24px rgba(76,175,125,0.4)}
.hero-actions .btn-primary:hover{background:#3d9e6e;transform:translateY(-3px)}
.hero-actions .btn-outline{border-color:rgba(255,255,255,0.5);color:#fff}
.hero-actions .btn-outline:hover{background:rgba(255,255,255,0.12);border-color:#fff}
.hero-stats{position:absolute;bottom:40px;left:50%;transform:translateX(-50%);display:flex;gap:48px;z-index:2}
.hero-stat{text-align:center;color:#fff}
.hero-stat-num{font-size:28px;font-weight:800;color:var(--accent)}
.hero-stat-label{font-size:12px;color:rgba(255,255,255,0.6);letter-spacing:1px;margin-top:2px}
.scroll-hint{position:absolute;bottom:20px;right:40px;z-index:2;display:flex;flex-direction:column;align-items:center;gap:6px;color:rgba(255,255,255,0.5);font-size:11px;letter-spacing:1px}
.scroll-hint-line{width:1px;height:40px;background:rgba(255,255,255,0.3);animation:scrollAnim 1.5s infinite}
@keyframes scrollAnim{0%,100%{opacity:0.3;transform:scaleY(0.5)}50%{opacity:1;transform:scaleY(1)}}

/* ===== 社区理念 ===== */
.intro-section{background:var(--bg);padding:100px 0}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.intro-text .section-tag{margin-bottom:20px}
.intro-text h2{font-size:clamp(28px,3.5vw,44px);font-weight:700;line-height:1.2;margin-bottom:24px}
.intro-text p{color:var(--text-sub);font-size:16px;line-height:1.9;margin-bottom:20px}
.intro-features{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px}
.intro-feature{display:flex;align-items:flex-start;gap:12px;padding:16px;background:var(--bg-soft);border-radius:var(--radius-sm)}
.intro-feature-icon{width:36px;height:36px;background:rgba(26,107,60,0.1);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:16px}
.intro-feature h4{font-size:14px;font-weight:600;margin-bottom:4px}
.intro-feature p{font-size:13px;color:var(--text-muted);line-height:1.5;margin:0}
.intro-visual{position:relative}
.intro-img-wrap{border-radius:20px;overflow:hidden;box-shadow:var(--shadow-hover)}
.intro-badge{position:absolute;bottom:-20px;left:-20px;background:#fff;border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow);display:flex;align-items:center;gap:12px}
.intro-badge-icon{font-size:28px}
.intro-badge-text strong{display:block;font-size:18px;font-weight:800;color:var(--primary)}
.intro-badge-text span{font-size:12px;color:var(--text-muted)}

/* ===== 视频卡片 ===== */
.videos-section{background:var(--bg-soft);padding:80px 0}
.videos-header{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:48px}
.videos-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#1a1a1a}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.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;background:rgba(0,0,0,0);transition:var(--transition)}
.video-card:hover .video-play-btn{background:rgba(0,0,0,0.35)}
.play-icon{width:56px;height:56px;background:rgba(255,255,255,0.95);border-radius:50%;display:flex;align-items:center;justify-content:center;transform:scale(0);transition:var(--transition);box-shadow:0 4px 20px rgba(0,0,0,0.3)}
.video-card:hover .play-icon{transform:scale(1)}
.play-icon svg{width:20px;height:20px;fill:var(--primary);margin-left:3px}
.video-duration{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,0.75);color:#fff;font-size:12px;font-weight:600;padding:3px 8px;border-radius:4px}
.video-category-tag{position:absolute;top:10px;left:10px;background:var(--primary);color:#fff;font-size:11px;font-weight:700;padding:3px 10px;border-radius:50px}
.video-info{padding:16px}
.video-info h3{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:10px;color:var(--text-main);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:var(--text-muted)}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-author{display:flex;align-items:center;gap:8px;margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}
.video-author-avatar{width:28px;height:28px;border-radius:50%;background:var(--bg-soft);overflow:hidden;flex-shrink:0}
.video-author-avatar img{width:100%;height:100%;object-fit:cover}
.video-author-name{font-size:12px;font-weight:500;color:var(--text-sub)}

/* ===== 热门话题 ===== */
.topics-section{padding:80px 0;background:#fff}
.topics-list{display:flex;flex-direction:column;gap:1px;background:var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.topic-item{display:flex;align-items:center;gap:20px;padding:20px 24px;background:#fff;transition:var(--transition);cursor:pointer}
.topic-item:hover{background:var(--bg-soft)}
.topic-rank{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;flex-shrink:0}
.topic-rank.top1{background:linear-gradient(135deg,#ff6b35,#ff9a3c);color:#fff}
.topic-rank.top2{background:linear-gradient(135deg,#888,#aaa);color:#fff}
.topic-rank.top3{background:linear-gradient(135deg,#c07a3c,#e0a060);color:#fff}
.topic-rank.other{background:var(--bg-soft);color:var(--text-muted)}
.topic-content{flex:1;min-width:0}
.topic-content h3{font-size:15px;font-weight:600;color:var(--text-main);margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topic-content p{font-size:12px;color:var(--text-muted)}
.topic-stats{display:flex;gap:16px;flex-shrink:0}
.topic-stat{display:flex;align-items:center;gap:4px;font-size:12px;color:var(--text-muted)}
.topic-arrow{color:var(--text-muted);font-size:18px;flex-shrink:0;transition:var(--transition)}
.topic-item:hover .topic-arrow{color:var(--primary);transform:translateX(4px)}

/* ===== 板块分类 ===== */
.categories-section{background:var(--bg-soft);padding:80px 0}
.categories-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.category-card{background:#fff;border-radius:var(--radius);padding:28px;border:1.5px solid var(--border);transition:var(--transition);cursor:pointer;position:relative;overflow:hidden}
.category-card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,var(--primary),var(--primary-light));opacity:0;transition:var(--transition)}
.category-card:hover::before{opacity:1}
.category-card:hover{border-color:transparent;transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.category-card:hover *{color:#fff!important}
.category-icon{width:52px;height:52px;background:rgba(26,107,60,0.1);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px;position:relative;z-index:1;transition:var(--transition)}
.category-card:hover .category-icon{background:rgba(255,255,255,0.2)}
.category-card h3{font-size:17px;font-weight:700;margin-bottom:8px;position:relative;z-index:1}
.category-card p{font-size:13px;color:var(--text-sub);line-height:1.6;position:relative;z-index:1}
.category-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:16px;border-top:1px solid var(--border);position:relative;z-index:1;transition:var(--transition)}
.category-card:hover .category-meta{border-color:rgba(255,255,255,0.3)}
.category-count{font-size:12px;font-weight:600;color:var(--primary)}
.category-card:hover .category-count{color:#fff}
.category-arrow{font-size:18px;color:var(--text-muted)}

/* ===== 数据统计 ===== */
.stats-section{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%);padding:80px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;text-align:center}
.stat-item{color:#fff}
.stat-number{font-size:clamp(36px,5vw,56px);font-weight:800;color:#fff;line-height:1;margin-bottom:8px}
.stat-number span{color:var(--accent)}
.stat-label{font-size:14px;color:rgba(255,255,255,0.7);letter-spacing:0.5px}
.stat-divider{width:40px;height:3px;background:var(--accent);margin:12px auto 0;border-radius:2px}

/* ===== 用户评价 ===== */
.reviews-section{background:#fff;padding:80px 0}
.reviews-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.review-card{background:var(--bg-soft);border-radius:var(--radius);padding:28px;border:1.5px solid var(--border);transition:var(--transition)}
.review-card:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.review-stars{display:flex;gap:3px;margin-bottom:16px}
.review-stars span{color:#f5a623;font-size:16px}
.review-text{font-size:15px;color:var(--text-sub);line-height:1.8;margin-bottom:20px;font-style:italic}
.review-text::before{content:'"';font-size:40px;color:var(--primary);opacity:0.2;line-height:0;vertical-align:-18px;margin-right:4px}
.review-author{display:flex;align-items:center;gap:12px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;font-weight:700;flex-shrink:0}
.review-author-info strong{display:block;font-size:14px;font-weight:700}
.review-author-info span{font-size:12px;color:var(--text-muted)}

/* ===== FAQ ===== */
.faq-section{background:var(--bg-soft);padding:80px 0}
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border-radius:var(--radius);border:1.5px solid var(--border);overflow:hidden;transition:var(--transition)}
.faq-item.active{border-color:var(--primary)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;gap:16px}
.faq-question h3{font-size:15px;font-weight:600;color:var(--text-main);line-height:1.5}
.faq-icon{width:28px;height:28px;border-radius:50%;background:var(--bg-soft);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:var(--transition);font-size:18px;color:var(--text-muted)}
.faq-item.active .faq-icon{background:var(--primary);color:#fff;transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.3s}
.faq-answer p{padding:0 24px 20px;font-size:14px;color:var(--text-sub);line-height:1.8}
.faq-item.active .faq-answer{max-height:300px}

/* ===== 加入我们 ===== */
.join-section{background:linear-gradient(135deg,#f0f9f4 0%,#e8f5ec 100%);padding:80px 0}
.join-inner{max-width:600px;margin:0 auto;text-align:center}
.join-form{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
.join-form input{flex:1;min-width:200px;padding:14px 20px;border:1.5px solid var(--border);border-radius:50px;font-size:14px;font-family:var(--font);outline:none;transition:var(--transition)}
.join-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,107,60,0.1)}
.join-form .btn{flex-shrink:0}
.join-note{margin-top:16px;font-size:12px;color:var(--text-muted)}

/* ===== 页脚 ===== */
.footer{background:var(--text-main);color:rgba(255,255,255,0.7);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,0.1)}
.footer-brand .footer-logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:16px}
.footer-brand .footer-logo img{width:32px;height:32px;border-radius:7px;object-fit:cover}
.footer-brand p{font-size:14px;line-height:1.8;max-width:280px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.social-btn{width:36px;height:36px;border-radius:8px;background:rgba(255,255,255,0.1);display:flex;align-items:center;justify-content:center;font-size:14px;transition:var(--transition);cursor:pointer}
.social-btn:hover{background:var(--primary)}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:20px;letter-spacing:0.5px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul li a{font-size:13px;color:rgba(255,255,255,0.6);transition:var(--transition)}
.footer-col ul li a:hover{color:#fff;padding-left:4px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding:20px 0;font-size:12px;color:rgba(255,255,255,0.4);flex-wrap:wrap;gap:12px}
.footer-bottom a{color:rgba(255,255,255,0.5);transition:var(--transition)}
.footer-bottom a:hover{color:#fff}

/* ===== 移动端响应式 ===== */
@media(max-width:1024px){
  .intro-grid{grid-template-columns:1fr;gap:40px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .navbar-nav,.navbar-actions .btn-outline{display:none}
  .hamburger{display:flex}
  .hero h1{font-size:36px}
  .hero-stats{gap:24px;bottom:20px}
  .hero-stat-num{font-size:22px}
  .videos-grid{grid-template-columns:1fr}
  .categories-grid{grid-template-columns:1fr}
  .reviews-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .topics-stats{display:none}
  .search-tags{display:none}
  .intro-features{grid-template-columns:1fr}
  .join-form{flex-direction:column}
  .join-form input,.join-form .btn{width:100%}
  .hero-stats{display:none}
  .section{padding:56px 0}
  .videos-header{flex-direction:column;align-items:flex-start;gap:16px}
}
@media(max-width:480px){
  .container{padding:0 16px}
  .hero{min-height:80vh}
  .hero h1{font-size:30px}
}

/* ===== 移动端菜单 ===== */
.mobile-menu{position:fixed;top:70px;left:0;right:0;bottom:0;background:#fff;z-index:999;transform:translateX(100%);transition:var(--transition);overflow-y:auto;padding:24px}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu nav{display:flex;flex-direction:column;gap:4px}
.mobile-menu nav a{padding:14px 16px;border-radius:10px;font-size:16px;font-weight:500;color:var(--text-main);transition:var(--transition)}
.mobile-menu nav a:hover{background:var(--bg-soft);color:var(--primary)}
.mobile-menu-actions{margin-top:24px;display:flex;flex-direction:column;gap:12px}

/* ===== 面包屑 ===== */
.breadcrumb{padding:16px 0;font-size:13px;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted);transition:var(--transition)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 8px;color:var(--border)}

/* ===== 内页通用 ===== */
.page-hero{background:linear-gradient(135deg,var(--primary-dark),var(--primary));padding:80px 0 60px;margin-top:70px}
.page-hero h1{font-size:clamp(28px,4vw,48px);font-weight:800;color:#fff;margin-bottom:12px}
.page-hero p{font-size:16px;color:rgba(255,255,255,0.75);max-width:500px}
.search-bar-wrap-inner{margin-top:0}

/* ===== 动画 ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.animate-fadeInUp{animation:fadeInUp 0.7s ease forwards}
.animate-delay-1{animation-delay:0.1s}
.animate-delay-2{animation-delay:0.2s}
.animate-delay-3{animation-delay:0.3s}

/* ===== 懒加载占位 ===== */
.lazy-img{background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);background-size:200% 100%;animation:shimmer 1.5s infinite}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}