/* 抖阴 - 植物视频社区 主样式 | fujbif.cn */
:root{--green:#1a7a3c;--green-light:#2ecc71;--green-dark:#0d5c2a;--gold:#c9a227;--bg:#f5f9f5;--text:#222;--text-light:#555;--white:#fff;--shadow:0 4px 18px rgba(0,0,0,.12);--radius:10px;--nav-h:64px}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei',Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
a{color:var(--green);text-decoration:none;transition:color .2s}
a:hover{color:var(--green-dark)}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:60px 0}
.section-title{font-size:2rem;font-weight:700;color:var(--green-dark);text-align:center;margin-bottom:10px;position:relative}
.section-title::after{content:'';display:block;width:60px;height:4px;background:var(--green-light);margin:10px auto 0}
.section-sub{text-align:center;color:var(--text-light);margin-bottom:40px;font-size:1rem}
.btn{display:inline-block;padding:10px 28px;border-radius:50px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .25s;border:none}
.btn-primary{background:var(--green);color:var(--white)}
.btn-primary:hover{background:var(--green-dark);color:var(--white);transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-outline{background:transparent;color:var(--green);border:2px solid var(--green)}
.btn-outline:hover{background:var(--green);color:var(--white)}
/* ===== 顶部通知栏 ===== */
.top-bar{background:var(--green-dark);color:var(--white);text-align:center;padding:7px 0;font-size:.85rem;letter-spacing:.5px}
/* ===== 导航 ===== */
.navbar{background:var(--white);position:sticky;top:0;z-index:999;box-shadow:0 2px 10px rgba(0,0,0,.08);height:var(--nav-h)}
.navbar .container{display:flex;align-items:center;height:100%;gap:20px}
.navbar-brand{display:flex;align-items:center;gap:10px;font-size:1.5rem;font-weight:800;color:var(--green-dark);white-space:nowrap}
.navbar-brand img{width:40px;height:40px;border-radius:50%;object-fit:cover}
.navbar-nav{display:flex;align-items:center;gap:4px;flex:1;flex-wrap:nowrap}
.navbar-nav a{padding:8px 14px;border-radius:6px;font-size:.92rem;font-weight:500;color:var(--text);white-space:nowrap;transition:background .2s,color .2s}
.navbar-nav a:hover,.navbar-nav a.active{background:var(--green);color:var(--white)}
.navbar-search{display:flex;align-items:center;border:1.5px solid #d0e8d8;border-radius:50px;overflow:hidden;background:#f0f7f2}
.navbar-search input{border:none;background:transparent;padding:7px 14px;font-size:.9rem;outline:none;width:180px;color:var(--text)}
.navbar-search button{background:var(--green);border:none;color:var(--white);padding:7px 14px;cursor:pointer;font-size:.9rem;transition:background .2s}
.navbar-search button:hover{background:var(--green-dark)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}
.hamburger span{display:block;width:24px;height:2px;background:var(--text);border-radius:2px;transition:all .3s}
/* ===== 面包屑 ===== */
.breadcrumb{background:#e8f5ec;padding:10px 0;font-size:.85rem;color:var(--text-light)}
.breadcrumb a{color:var(--green)}
.breadcrumb span{margin:0 6px}
/* ===== Banner ===== */
.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;z-index:0}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,60,25,.75) 0%,rgba(10,60,25,.45) 100%)}
.hero-content{position:relative;z-index:1;color:var(--white);max-width:680px}
.hero-content h1{font-size:2.8rem;font-weight:900;line-height:1.2;margin-bottom:16px;text-shadow:0 2px 8px rgba(0,0,0,.4)}
.hero-content p{font-size:1.1rem;margin-bottom:28px;opacity:.92;line-height:1.8}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-badge{display:inline-block;background:var(--gold);color:#fff;font-size:.8rem;padding:3px 10px;border-radius:20px;margin-bottom:12px;font-weight:600;letter-spacing:.5px}
/* ===== 搜索框（首页大搜索） ===== */
.hero-search{display:flex;margin-top:24px;border-radius:50px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.2);max-width:540px}
.hero-search input{flex:1;border:none;padding:14px 22px;font-size:1rem;outline:none}
.hero-search button{background:var(--green);color:#fff;border:none;padding:14px 28px;font-size:1rem;font-weight:600;cursor:pointer;transition:background .2s}
.hero-search button:hover{background:var(--green-dark)}
/* ===== 统计数字 ===== */
.stats-bar{background:var(--green-dark);color:#fff;padding:20px 0}
.stats-bar .container{display:flex;justify-content:space-around;flex-wrap:wrap;gap:16px}
.stat-item{text-align:center}
.stat-num{font-size:2rem;font-weight:800;color:var(--green-light)}
.stat-label{font-size:.85rem;opacity:.85}
/* ===== 视频卡片 ===== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px}
.video-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;cursor:pointer}
.video-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.16)}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.0);transition:background .25s}
.play-btn svg{width:56px;height:56px;opacity:0;transform:scale(.8);transition:opacity .25s,transform .25s}
.video-card:hover .play-btn{background:rgba(0,0,0,.35)}
.video-card:hover .play-btn svg{opacity:1;transform:scale(1)}
.video-info{padding:14px 16px}
.video-info h3{font-size:1rem;font-weight:600;margin-bottom:6px;line-height:1.4;color:var(--text)}
.video-meta{display:flex;gap:14px;font-size:.8rem;color:var(--text-light)}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;background:#e8f5ec;color:var(--green);font-size:.75rem;padding:2px 8px;border-radius:20px;margin-right:4px;margin-bottom:4px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:#fff;font-size:.75rem;padding:2px 7px;border-radius:4px}
/* ===== 分类标签栏 ===== */
.category-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.cat-tab{padding:7px 18px;border-radius:50px;border:1.5px solid var(--green);color:var(--green);font-size:.9rem;cursor:pointer;transition:all .2s;background:#fff}
.cat-tab:hover,.cat-tab.active{background:var(--green);color:#fff}
/* ===== 专家卡片 ===== */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.expert-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);text-align:center;padding-bottom:20px;transition:transform .25s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card img{width:100%;height:200px;object-fit:cover}
.expert-card h3{font-size:1.05rem;font-weight:700;margin:14px 0 4px;color:var(--green-dark)}
.expert-card .role{font-size:.85rem;color:var(--text-light);margin-bottom:8px}
.expert-card .awards{font-size:.8rem;color:var(--gold);margin-bottom:10px}
.expert-btns{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;padding:0 12px}
.expert-btns a{font-size:.8rem;padding:5px 12px}
/* ===== 合作品牌 ===== */
.brand-wall{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;align-items:center}
.brand-item{background:#fff;border:1.5px solid #d0e8d8;border-radius:8px;padding:12px 24px;font-size:.9rem;font-weight:600;color:var(--green-dark);transition:all .2s}
.brand-item:hover{border-color:var(--green);background:var(--green);color:#fff}
/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:var(--radius);margin-bottom:12px;box-shadow:0 2px 8px rgba(0,0,0,.06);overflow:hidden}
.faq-q{padding:16px 20px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--green-dark)}
.faq-q::after{content:'+';font-size:1.4rem;color:var(--green);transition:transform .2s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:max-height .3s,padding .3s;color:var(--text-light);font-size:.95rem}
.faq-item.open .faq-a{max-height:200px;padding:0 20px 16px}
/* ===== 评论 ===== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:#fff;border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);border-left:4px solid var(--green-light)}
.review-stars{color:var(--gold);font-size:1.1rem;margin-bottom:8px}
.review-text{font-size:.95rem;color:var(--text);margin-bottom:12px;line-height:1.7}
.review-author{display:flex;align-items:center;gap:10px}
.review-avatar{width:38px;height:38px;border-radius:50%;background:var(--green-light);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1rem}
.review-name{font-weight:600;font-size:.9rem}
.review-date{font-size:.78rem;color:var(--text-light)}
/* ===== 联系 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-card{background:#fff;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.contact-card h3{color:var(--green-dark);font-size:1.1rem;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px;font-size:.95rem}
.contact-icon{color:var(--green);font-size:1.1rem;min-width:20px}
.qr-row{display:flex;gap:20px;flex-wrap:wrap;margin-top:16px}
.qr-box{text-align:center}
.qr-box img{width:120px;height:120px;border-radius:8px;border:2px solid #d0e8d8}
.qr-box p{font-size:.8rem;margin-top:6px;color:var(--text-light)}
/* ===== 社交分享 ===== */
.share-bar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:center;padding:20px 0}
.share-btn{display:flex;align-items:center;gap:6px;padding:8px 16px;border-radius:50px;font-size:.85rem;font-weight:600;cursor:pointer;border:none;transition:all .2s}
.share-wechat{background:#07c160;color:#fff}
.share-weibo{background:#e6162d;color:#fff}
.share-douyin{background:#000;color:#fff}
.share-bilibili{background:#00a1d6;color:#fff}
.share-btn:hover{opacity:.85;transform:translateY(-2px)}
/* ===== AI专区 ===== */
.ai-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.ai-card{background:linear-gradient(135deg,var(--green-dark),#0a4020);color:#fff;border-radius:var(--radius);padding:28px;position:relative;overflow:hidden}
.ai-card::before{content:'';position:absolute;top:-30px;right:-30px;width:120px;height:120px;background:rgba(255,255,255,.06);border-radius:50%}
.ai-card h3{font-size:1.1rem;margin-bottom:10px}
.ai-card p{font-size:.9rem;opacity:.85;line-height:1.7}
.ai-icon{font-size:2.5rem;margin-bottom:14px}
/* ===== 页脚 ===== */
.footer{background:var(--green-dark);color:#c8e6c9;padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:40px}
.footer-brand h2{color:#fff;font-size:1.4rem;margin-bottom:10px}
.footer-brand p{font-size:.9rem;line-height:1.8;opacity:.8}
.footer-col h4{color:#fff;font-size:1rem;margin-bottom:14px;font-weight:700}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{color:#a5d6a7;font-size:.9rem;transition:color .2s}
.footer-col ul li a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;font-size:.85rem;opacity:.75}
.footer-qr{display:flex;gap:20px;margin-top:16px}
.footer-qr-item{text-align:center}
.footer-qr-item img{width:80px;height:80px;border-radius:6px;border:2px solid rgba(255,255,255,.2)}
.footer-qr-item p{font-size:.75rem;margin-top:4px;color:#a5d6a7}
/* ===== 内页通用 ===== */
.page-hero{background:linear-gradient(135deg,var(--green-dark),var(--green));color:#fff;padding:60px 0;text-align:center}
.page-hero h1{font-size:2.2rem;font-weight:900;margin-bottom:10px}
.page-hero p{font-size:1rem;opacity:.88}
/* ===== 响应式 ===== */
@media(max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .hero-content h1{font-size:2rem}
}
@media(max-width:640px){
  .navbar-nav{display:none;position:absolute;top:var(--nav-h);left:0;right:0;background:#fff;flex-direction:column;padding:10px 0;box-shadow:0 4px 12px rgba(0,0,0,.1)}
  .navbar-nav.open{display:flex}
  .hamburger{display:flex}
  .navbar-search{display:none}
  .footer-grid{grid-template-columns:1fr}
  .hero-content h1{font-size:1.6rem}
  .stats-bar .container{justify-content:center}
  .section-title{font-size:1.5rem}
  .video-grid{grid-template-columns:1fr}
}
/* ===== 懒加载占位 ===== */
img[loading="lazy"]{background:#e8f5ec}
/* ===== 滚动动画 ===== */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .5s,transform .5s}
.fade-in.visible{opacity:1;transform:none}
/* ===== 标签云 ===== */
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{background:#e8f5ec;color:var(--green);padding:4px 12px;border-radius:20px;font-size:.85rem;transition:all .2s}
.tag-cloud a:hover{background:var(--green);color:#fff}
/* ===== 进度条 ===== */
.skill-bar{margin-bottom:14px}
.skill-bar label{font-size:.9rem;color:var(--text);margin-bottom:4px;display:block}
.bar-track{background:#d0e8d8;border-radius:50px;height:8px;overflow:hidden}
.bar-fill{height:100%;background:linear-gradient(90deg,var(--green),var(--green-light));border-radius:50px}
/* ===== 视频模态框 ===== */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.8);z-index:9999;align-items:center;justify-content:center}
.modal-overlay.show{display:flex}
.modal-box{background:#000;border-radius:12px;overflow:hidden;max-width:800px;width:90%;position:relative}
.modal-close{position:absolute;top:10px;right:14px;color:#fff;font-size:1.8rem;cursor:pointer;z-index:1;line-height:1}
.modal-video{width:100%;aspect-ratio:16/9;background:#111;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem}
/* ===== 内页文章 ===== */
.article-body{max-width:820px;margin:0 auto;font-size:1rem;line-height:1.9;color:var(--text)}
.article-body h2{color:var(--green-dark);font-size:1.4rem;margin:32px 0 12px;border-left:4px solid var(--green-light);padding-left:12px}
.article-body p{margin-bottom:16px}
.article-body ul{margin:12px 0 16px 24px}
.article-body ul li{margin-bottom:6px}

/* ===== 补充样式（EEAT修复版）===== */
/* 媒体卡片 */
.media-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:all .3s;border-left:4px solid var(--green)}
.media-card:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(26,122,60,.18)}
.media-icon{font-size:2.2rem;margin-bottom:12px}
.media-card h3{font-size:1.05rem;font-weight:700;color:var(--green-dark);margin-bottom:10px}
.media-card p{font-size:.88rem;color:var(--text-light);line-height:1.7;margin-bottom:12px}
.btn-link{color:var(--green);font-weight:600;font-size:.9rem}
.btn-link:hover{color:var(--green-dark)}
/* 娱乐专区 */
.ent-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:all .3s;text-align:center}
.ent-card:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(26,122,60,.18)}
.ent-icon{font-size:2.5rem;margin-bottom:12px}
.ent-card h3{font-size:1.05rem;font-weight:700;color:var(--green-dark);margin-bottom:10px}
.ent-card p{font-size:.88rem;color:var(--text-light);line-height:1.7;margin-bottom:12px}
.ent-tags{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.ent-tags span{background:#e8f5ec;color:var(--green);font-size:.75rem;padding:3px 10px;border-radius:50px;font-weight:500}
/* 社区卡片 */
.community-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:all .3s}
.community-card:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(26,122,60,.18);border-top:3px solid var(--green)}
.community-icon{font-size:2.2rem;margin-bottom:12px}
.community-card h3{font-size:1.05rem;font-weight:700;color:var(--green-dark);margin-bottom:10px}
.community-card p{font-size:.88rem;color:var(--text-light);line-height:1.7;margin-bottom:12px}
/* 专家资质徽章 */
.expert-cred{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;padding:0 16px;margin-bottom:10px}
.cred-badge{background:#e8f5ec;color:var(--green);font-size:.72rem;padding:3px 10px;border-radius:50px;font-weight:600}
/* 视频页筛选栏 */
.video-filter-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:24px}
.filter-label{font-weight:600;font-size:.9rem;color:var(--text-light)}
.filter-select{border:1.5px solid #d0e8d8;border-radius:8px;padding:7px 14px;font-size:.88rem;cursor:pointer;outline:none;background:#fff;color:var(--text)}
.filter-select:focus{border-color:var(--green)}
.video-sort-tabs{display:flex;gap:8px}
.sort-tab{padding:6px 16px;border-radius:50px;border:1.5px solid #d0e8d8;background:#fff;cursor:pointer;font-size:.85rem;transition:all .2s}
.sort-tab.active,.sort-tab:hover{background:var(--green);color:#fff;border-color:var(--green)}
/* 社区话题 */
.topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.topic-card{background:#fff;border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:all .3s;border-left:4px solid var(--green)}
.topic-card:hover{transform:translateY(-3px);box-shadow:0 8px 30px rgba(26,122,60,.18)}
.topic-card h3{font-size:1rem;font-weight:700;color:var(--green-dark);margin-bottom:8px}
.topic-card p{font-size:.85rem;color:var(--text-light);line-height:1.6;margin-bottom:10px}
.topic-meta{display:flex;gap:12px;font-size:.78rem;color:var(--text-light)}
/* 时间线 */
.timeline{max-width:700px;margin:0 auto;position:relative;padding-left:32px}
.timeline::before{content:'';position:absolute;left:12px;top:0;bottom:0;width:2px;background:var(--green-light)}
.timeline-item{position:relative;margin-bottom:28px}
.timeline-item::before{content:'';position:absolute;left:-24px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--green);border:2px solid #fff;box-shadow:0 0 0 3px var(--green-light)}
.timeline-year{font-size:.8rem;font-weight:700;color:var(--green);margin-bottom:4px}
.timeline-text{font-size:.9rem;color:var(--text-light);line-height:1.6}
/* 联系表单 */
.contact-form{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);max-width:600px;margin:0 auto}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px;color:var(--text)}
.form-group input,.form-group textarea,.form-group select{width:100%;border:1.5px solid #d0e8d8;border-radius:8px;padding:10px 14px;font-size:.9rem;outline:none;transition:border-color .2s;font-family:inherit}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--green)}
.form-group textarea{resize:vertical;min-height:120px}
/* 专家详情 */
.expert-detail-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:28px}
.expert-detail-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all .3s}
.expert-detail-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(26,122,60,.18)}
.expert-detail-card img{width:100%;height:220px;object-fit:cover}
.expert-detail-info{padding:20px}
.expert-detail-info h3{font-size:1.1rem;font-weight:700;color:var(--green-dark);margin-bottom:4px}
.expert-detail-info .role{font-size:.82rem;color:var(--text-light);margin-bottom:8px}
.expert-detail-info .bio{font-size:.85rem;color:var(--text-light);line-height:1.7;margin-bottom:12px}
.expert-social{display:flex;flex-wrap:wrap;gap:6px}
.social-link{font-size:.75rem;background:#e8f5ec;color:var(--green);padding:3px 10px;border-radius:4px;transition:all .2s}
.social-link:hover{background:var(--green);color:#fff}
/* 视频新徽章 */
.video-new-badge{position:absolute;top:8px;left:8px;background:#f39c12;color:#fff;font-size:.72rem;padding:2px 8px;border-radius:4px;font-weight:700}
.video-date{color:var(--green);font-weight:500;font-size:.78rem}
/* 模态框active状态 */
.modal-overlay.active{display:flex}
/* 无障碍 */
:focus-visible{outline:3px solid var(--green);outline-offset:2px}
/* 打印 */
@media print{
  .navbar,.top-bar,.footer,.modal-overlay,.share-bar,.hamburger{display:none!important}
  .hero{min-height:auto}
  .hero-bg{display:none}
  .hero-content{color:#000!important}
}
/* 移动端补充 */
@media(max-width:768px){
  .hero{min-height:380px}
  .hero-content h1{font-size:1.6rem}
  .hero-content p{font-size:.9rem}
  .hero-btns{flex-direction:column;gap:10px}
  .hero-search{flex-direction:column;border-radius:12px}
  .hero-search input,.hero-search button{border-radius:8px}
  .expert-grid{grid-template-columns:1fr 1fr}
  .ai-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:1fr}
  .expert-detail-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .expert-grid{grid-template-columns:1fr}
  .section-title{font-size:1.3rem}
  .stat-num{font-size:1.5rem}
}