/* =====================================================
   麻豆传媒网站 - 主样式文件 | mo795060.cn
   原创设计，版权所有 ©2025 麻豆传媒网站
   ===================================================== */

/* ---- CSS变量 ---- */
:root {
  --primary: #E8456A;
  --primary-dark: #c73258;
  --primary-light: #f9d0da;
  --gold: #F5A623;
  --gold-dark: #d48c0f;
  --text-dark: #1a1a2e;
  --text-mid: #4a4a6a;
  --text-light: #888;
  --bg-white: #ffffff;
  --bg-soft: #faf8fc;
  --bg-gray: #f4f4f8;
  --border: #e8e0ef;
  --shadow-sm: 0 2px 12px rgba(232,69,106,0.08);
  --shadow-md: 0 6px 28px rgba(232,69,106,0.14);
  --shadow-lg: 0 12px 48px rgba(232,69,106,0.18);
  --radius: 14px;
  --radius-sm: 8px;
  --transition: 0.28s cubic-bezier(0.4,0,0.2,1);
}

/* ---- 重置与基础 ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB',sans-serif;color:var(--text-dark);background:var(--bg-white);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}

/* ---- 布局容器 ---- */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section-alt{background:var(--bg-soft)}
.section-dark{background:var(--text-dark);color:#fff}

/* ---- 标题系统 ---- */
.section-title{font-size:2rem;font-weight:700;text-align:center;margin-bottom:12px;color:var(--text-dark);letter-spacing:-0.02em}
.section-title span{color:var(--primary)}
.section-subtitle{text-align:center;color:var(--text-mid);font-size:1rem;margin-bottom:48px;max-width:580px;margin-left:auto;margin-right:auto}
.section-tag{display:inline-block;background:var(--primary-light);color:var(--primary);font-size:0.78rem;font-weight:600;padding:4px 14px;border-radius:20px;margin-bottom:14px;letter-spacing:0.04em}

/* ---- 按钮 ---- */
.btn{display:inline-flex;align-items:center;gap:6px;padding:12px 28px;border-radius:50px;font-size:0.95rem;font-weight:600;transition:all var(--transition);cursor:pointer}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 18px rgba(232,69,106,0.35)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(232,69,106,0.45);color:#fff}
.btn-outline{border:2px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-gold{background:var(--gold);color:#fff;box-shadow:0 4px 18px rgba(245,166,35,0.35)}
.btn-gold:hover{background:var(--gold-dark);transform:translateY(-2px);color:#fff}
.btn-sm{padding:8px 20px;font-size:0.85rem}

/* ---- 顶部公告栏 ---- */
.top-bar{background:linear-gradient(90deg,var(--primary) 0%,var(--primary-dark) 50%,#8B1A4A 100%);color:#fff;font-size:0.82rem;padding:7px 0;text-align:center;letter-spacing:0.03em}
.top-bar a{color:#ffe0e8;text-decoration:underline}

/* ---- 导航栏 ---- */
.navbar{background:rgba(255,255,255,0.97);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1000;transition:box-shadow var(--transition)}
.navbar.scrolled{box-shadow:var(--shadow-md)}
.navbar-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.navbar-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.navbar-logo img{width:44px;height:44px;object-fit:contain}
.navbar-logo-text{font-size:1.35rem;font-weight:800;color:var(--primary);letter-spacing:-0.02em}
.navbar-logo-text span{color:var(--gold)}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{padding:8px 14px;border-radius:8px;font-size:0.92rem;font-weight:500;color:var(--text-mid);transition:all var(--transition);white-space:nowrap}
.nav-menu a:hover,.nav-menu a.active{color:var(--primary);background:var(--primary-light)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}

/* ---- 搜索框 ---- */
.search-bar{position:relative;width:220px}
.search-bar input{width:100%;padding:9px 38px 9px 16px;border:1.5px solid var(--border);border-radius:50px;font-size:0.88rem;background:var(--bg-soft);color:var(--text-dark);outline:none;transition:all var(--transition)}
.search-bar input:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(232,69,106,0.1)}
.search-bar input::placeholder{color:var(--text-light)}
.search-bar button{position:absolute;right:10px;top:50%;transform:translateY(-50%);color:var(--text-light);font-size:1rem;transition:color var(--transition)}
.search-bar button:hover{color:var(--primary)}
.search-dropdown{display:none;position:absolute;top:calc(100% + 6px);left:0;right:0;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-md);z-index:200;overflow:hidden}
.search-dropdown.show{display:block}
.search-dropdown-item{padding:10px 16px;font-size:0.88rem;color:var(--text-mid);cursor:pointer;transition:background var(--transition)}
.search-dropdown-item:hover{background:var(--bg-soft);color:var(--primary)}
.hamburger{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer}
.hamburger span{display:block;width:24px;height:2px;background:var(--text-dark);border-radius:2px;transition:all var(--transition)}

/* ---- 面包屑 ---- */
.breadcrumb{background:var(--bg-gray);padding:12px 0;font-size:0.85rem;color:var(--text-light)}
.breadcrumb ol{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.breadcrumb li+li::before{content:'›';margin-right:6px;color:var(--text-light)}
.breadcrumb a{color:var(--text-mid)}
.breadcrumb a:hover{color:var(--primary)}

/* ---- Hero Banner ---- */
.hero{position:relative;min-height:580px;display:flex;align-items:center;overflow:hidden;background:#1a1a2e}
.hero-bg{position:absolute;inset:0;background-image:url('../images/hero-banner.jpg');background-size:cover;background-position:center top;opacity:0.42;transition:opacity 0.5s}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,26,46,0.88) 0%,rgba(232,69,106,0.22) 60%,rgba(245,166,35,0.12) 100%)}
.hero-content{position:relative;z-index:2;max-width:680px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(232,69,106,0.18);border:1px solid rgba(232,69,106,0.4);color:#ffb3c6;font-size:0.82rem;font-weight:600;padding:6px 16px;border-radius:50px;margin-bottom:20px;letter-spacing:0.06em}
.hero-tag::before{content:'';width:8px;height:8px;background:var(--primary);border-radius:50%;animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.5;transform:scale(1.3)}}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:800;color:#fff;line-height:1.2;margin-bottom:18px;letter-spacing:-0.03em}
.hero h1 span{color:var(--primary)}
.hero-desc{font-size:1.05rem;color:rgba(255,255,255,0.78);margin-bottom:32px;max-width:520px;line-height:1.8}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:32px;margin-top:44px;padding-top:32px;border-top:1px solid rgba(255,255,255,0.12)}
.hero-stat-item{text-align:center}
.hero-stat-num{font-size:1.8rem;font-weight:800;color:var(--primary);display:block}
.hero-stat-label{font-size:0.82rem;color:rgba(255,255,255,0.6);margin-top:2px}

/* ---- 传媒视频卡片区 ---- */
.video-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-sm);transition:all var(--transition);cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#1a1a2e}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition),opacity var(--transition)}
.video-card:hover .video-thumb img{transform:scale(1.06);opacity:0.8}
.video-play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition)}
.video-card:hover .video-play-btn{opacity:1}
.play-circle{width:60px;height:60px;background:rgba(255,255,255,0.92);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(0,0,0,0.3);transform:scale(0.8);transition:transform var(--transition)}
.video-card:hover .play-circle{transform:scale(1)}
.play-circle::after{content:'';border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent var(--primary);margin-left:4px}
.video-badge{position:absolute;top:10px;left:10px;background:var(--primary);color:#fff;font-size:0.72rem;font-weight:700;padding:3px 10px;border-radius:20px;letter-spacing:0.04em}
.video-duration{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,0.7);color:#fff;font-size:0.75rem;padding:2px 8px;border-radius:4px}
.video-info{padding:16px}
.video-title{font-size:0.95rem;font-weight:600;color:var(--text-dark);margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;justify-content:space-between;font-size:0.8rem;color:var(--text-light)}
.video-stats{display:flex;gap:12px}
.video-stat{display:flex;align-items:center;gap:4px}
.video-stat svg{width:13px;height:13px;fill:currentColor}
.video-category{color:var(--primary);font-weight:600;font-size:0.78rem}

/* ---- 分类标签栏 ---- */
.category-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px;justify-content:center}
.cat-tab{padding:8px 20px;border-radius:50px;font-size:0.88rem;font-weight:500;border:1.5px solid var(--border);color:var(--text-mid);background:#fff;transition:all var(--transition);cursor:pointer}
.cat-tab:hover,.cat-tab.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 14px rgba(232,69,106,0.3)}

/* ---- 功能特色卡片 ---- */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.feature-card{background:#fff;border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow-sm);transition:all var(--transition);border:1px solid var(--border);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--gold));transform:scaleX(0);transform-origin:left;transition:transform var(--transition)}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.feature-card:hover::before{transform:scaleX(1)}
.feature-icon{width:52px;height:52px;border-radius:14px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;margin-bottom:18px;font-size:1.5rem}
.feature-card h3{font-size:1.05rem;font-weight:700;margin-bottom:10px;color:var(--text-dark)}
.feature-card p{font-size:0.88rem;color:var(--text-mid);line-height:1.7}

/* ---- AI赋能区 ---- */
.ai-section{background:linear-gradient(135deg,#1a1a2e 0%,#2d1b4e 50%,#1a1a2e 100%);color:#fff;position:relative;overflow:hidden}
.ai-section::before{content:'';position:absolute;top:-50%;left:-20%;width:60%;height:200%;background:radial-gradient(ellipse,rgba(232,69,106,0.15) 0%,transparent 70%);pointer-events:none}
.ai-section::after{content:'';position:absolute;bottom:-50%;right:-20%;width:60%;height:200%;background:radial-gradient(ellipse,rgba(245,166,35,0.1) 0%,transparent 70%);pointer-events:none}
.ai-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.ai-content .section-title{text-align:left;color:#fff}
.ai-content .section-subtitle{text-align:left;color:rgba(255,255,255,0.7)}
.ai-features{display:flex;flex-direction:column;gap:16px;margin-top:28px}
.ai-feature-item{display:flex;align-items:flex-start;gap:14px;padding:16px;background:rgba(255,255,255,0.06);border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,0.08);transition:all var(--transition)}
.ai-feature-item:hover{background:rgba(232,69,106,0.12);border-color:rgba(232,69,106,0.3)}
.ai-feature-icon{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--gold));display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}
.ai-feature-text h4{font-size:0.95rem;font-weight:600;margin-bottom:4px;color:#fff}
.ai-feature-text p{font-size:0.83rem;color:rgba(255,255,255,0.6);line-height:1.6}
.ai-visual{position:relative}
.ai-visual-card{background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);border-radius:var(--radius);padding:24px;backdrop-filter:blur(10px)}
.ai-visual-card img{border-radius:var(--radius-sm);width:100%}

/* ---- 专家展示 ---- */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:28px}
.expert-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition);border:1px solid var(--border)}
.expert-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.expert-header{position:relative;background:linear-gradient(135deg,var(--primary-light),#fff0f5);padding:28px 24px 20px;text-align:center}
.expert-avatar{width:90px;height:90px;border-radius:50%;object-fit:cover;border:3px solid #fff;box-shadow:0 4px 16px rgba(232,69,106,0.2);margin:0 auto 14px}
.expert-name{font-size:1.1rem;font-weight:700;color:var(--text-dark);margin-bottom:4px}
.expert-role{font-size:0.82rem;color:var(--primary);font-weight:600;background:var(--primary-light);padding:3px 12px;border-radius:20px;display:inline-block}
.expert-body{padding:20px 24px}
.expert-bio{font-size:0.86rem;color:var(--text-mid);line-height:1.7;margin-bottom:14px}
.expert-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.expert-tag{font-size:0.75rem;padding:3px 10px;background:var(--bg-gray);border-radius:20px;color:var(--text-mid)}
.expert-actions{display:flex;gap:8px}
.expert-actions .btn{flex:1;justify-content:center;font-size:0.82rem;padding:9px 14px}

/* ---- 社区互动 ---- */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.community-card{border-radius:var(--radius);overflow:hidden;position:relative;aspect-ratio:4/3;cursor:pointer}
.community-card img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition)}
.community-card:hover img{transform:scale(1.06)}
.community-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(26,26,46,0.85) 0%,transparent 55%);display:flex;flex-direction:column;justify-content:flex-end;padding:20px}
.community-label{font-size:0.75rem;color:var(--primary);font-weight:700;letter-spacing:0.06em;margin-bottom:6px;background:rgba(232,69,106,0.15);padding:2px 10px;border-radius:20px;display:inline-block;width:fit-content}
.community-title{font-size:1rem;font-weight:700;color:#fff;line-height:1.3}
.community-meta{font-size:0.78rem;color:rgba(255,255,255,0.65);margin-top:6px}

/* ---- 合作品牌Logo墙 ---- */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:24px 40px;padding:20px 0}
.partner-item{padding:12px 24px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:0.9rem;font-weight:600;color:var(--text-mid);transition:all var(--transition);min-width:120px;text-align:center}
.partner-item:hover{border-color:var(--primary);color:var(--primary);box-shadow:var(--shadow-sm)}

/* ---- FAQ ---- */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:all var(--transition)}
.faq-item.open{border-color:var(--primary);box-shadow:var(--shadow-sm)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;font-size:0.95rem;font-weight:600;color:var(--text-dark);gap:12px;transition:color var(--transition)}
.faq-item.open .faq-question{color:var(--primary)}
.faq-icon{width:24px;height:24px;border-radius:50%;background:var(--bg-gray);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all var(--transition);font-size:1.1rem;line-height:1}
.faq-item.open .faq-icon{background:var(--primary);color:#fff;transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.35s ease,padding 0.35s ease}
.faq-item.open .faq-answer{max-height:300px}
.faq-answer-inner{padding:0 22px 18px;font-size:0.9rem;color:var(--text-mid);line-height:1.8}

/* ---- 用户评价 ---- */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:all var(--transition)}
.review-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.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,var(--primary),var(--gold));display:flex;align-items:center;justify-content:center;color:#fff;font-size:1rem;font-weight:700;flex-shrink:0}
.review-user{flex:1}
.review-name{font-size:0.92rem;font-weight:700;color:var(--text-dark)}
.review-date{font-size:0.78rem;color:var(--text-light)}
.review-stars{display:flex;gap:2px;margin-bottom:10px}
.star{color:#F5A623;font-size:0.9rem}
.review-text{font-size:0.88rem;color:var(--text-mid);line-height:1.7}
.review-tag{display:inline-block;margin-top:10px;font-size:0.75rem;color:var(--primary);background:var(--primary-light);padding:2px 10px;border-radius:20px}

/* ---- 联系我们区 ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info-card{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-sm);border:1px solid var(--border)}
.contact-info-card h3{font-size:1.15rem;font-weight:700;margin-bottom:20px;color:var(--text-dark);padding-bottom:14px;border-bottom:2px solid var(--primary-light)}
.contact-item{display:flex;align-items:flex-start;gap:14px;padding:12px 0;border-bottom:1px solid var(--bg-gray)}
.contact-item:last-child{border-bottom:none}
.contact-icon{width:38px;height:38px;border-radius:10px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}
.contact-detail{flex:1}
.contact-label{font-size:0.78rem;color:var(--text-light);margin-bottom:2px}
.contact-value{font-size:0.92rem;font-weight:600;color:var(--text-dark)}
.qr-group{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.qr-item{text-align:center}
.qr-item img{width:120px;height:120px;border-radius:var(--radius-sm);border:2px solid var(--border);margin:0 auto 8px}
.qr-label{font-size:0.8rem;color:var(--text-mid);font-weight:500}

/* ---- 社区入口 ---- */
.community-entry-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-top:24px}
.community-entry-item{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius-sm);padding:18px;text-align:center;transition:all var(--transition);cursor:pointer}
.community-entry-item:hover{border-color:var(--primary);background:var(--primary-light);transform:translateY(-2px)}
.community-entry-icon{font-size:1.8rem;margin-bottom:8px}
.community-entry-name{font-size:0.88rem;font-weight:600;color:var(--text-dark);margin-bottom:4px}
.community-entry-desc{font-size:0.78rem;color:var(--text-light)}

/* ---- 分享栏 ---- */
.share-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.share-label{font-size:0.88rem;color:var(--text-mid);font-weight:500}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 16px;border-radius:50px;font-size:0.82rem;font-weight:600;transition:all var(--transition);border:1.5px solid var(--border);color:var(--text-mid);background:#fff}
.share-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.share-wechat:hover{border-color:#07C160;color:#07C160}
.share-weibo:hover{border-color:#E6162D;color:#E6162D}
.share-douyin:hover{border-color:#010101;color:#010101}
.share-bilibili:hover{border-color:#00A1D6;color:#00A1D6}

/* ---- 底部 ---- */
.footer{background:#0f0f1e;color:rgba(255,255,255,0.75);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer-brand .navbar-logo-text{font-size:1.5rem;color:#fff;margin-bottom:14px;display:block}
.footer-brand p{font-size:0.86rem;line-height:1.8;color:rgba(255,255,255,0.55);max-width:280px}
.footer-col h4{font-size:0.95rem;font-weight:700;color:#fff;margin-bottom:18px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,0.1)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:0.86rem;color:rgba(255,255,255,0.55);transition:color var(--transition)}
.footer-col ul li a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:20px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:gap;gap:12px}
.footer-copyright{font-size:0.82rem;color:rgba(255,255,255,0.4)}
.footer-copyright a{color:rgba(255,255,255,0.55)}
.footer-copyright a:hover{color:var(--primary)}
.footer-icp{font-size:0.8rem;color:rgba(255,255,255,0.35)}
.footer-update{font-size:0.8rem;color:rgba(255,255,255,0.4)}
.footer-qr-row{display:flex;gap:20px;margin-top:20px}
.footer-qr-item{text-align:center}
.footer-qr-item img{width:80px;height:80px;border-radius:6px;border:1px solid rgba(255,255,255,0.1)}
.footer-qr-item span{display:block;font-size:0.72rem;color:rgba(255,255,255,0.4);margin-top:5px}

/* ---- 弹幕效果 ---- */
.danmu-container{position:relative;height:48px;overflow:hidden;background:rgba(0,0,0,0.04);border-radius:var(--radius-sm);margin-bottom:24px}
.danmu-track{display:flex;gap:24px;animation:danmu-scroll 20s linear infinite;white-space:nowrap;padding:12px 0}
@keyframes danmu-scroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
.danmu-item{display:inline-flex;align-items:center;gap:6px;font-size:0.82rem;color:var(--text-mid);background:#fff;border:1px solid var(--border);border-radius:20px;padding:4px 14px;flex-shrink:0}
.danmu-item .danmu-user{color:var(--primary);font-weight:600}

/* ---- 统计数字 ---- */
.stats-bar{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);padding:40px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-item{text-align:center;color:#fff}
.stat-num{font-size:2.2rem;font-weight:800;display:block;margin-bottom:4px}
.stat-label{font-size:0.85rem;opacity:0.85}

/* ---- How-To加入指南 ---- */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:24px;counter-reset:step}
.howto-step{background:#fff;border-radius:var(--radius);padding:28px 22px;box-shadow:var(--shadow-sm);border:1px solid var(--border);position:relative;transition:all var(--transition);counter-increment:step}
.howto-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.howto-step::before{content:counter(step);position:absolute;top:-14px;left:22px;width:32px;height:32px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.85rem;font-weight:800;box-shadow:0 4px 12px rgba(232,69,106,0.4)}
.howto-step h4{font-size:0.95rem;font-weight:700;margin-bottom:8px;margin-top:6px;color:var(--text-dark)}
.howto-step p{font-size:0.85rem;color:var(--text-mid);line-height:1.7}

/* ---- 通知/标签 ---- */
.badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:0.72rem;font-weight:700;letter-spacing:0.04em}
.badge-new{background:#E8F5E9;color:#2E7D32}
.badge-hot{background:#FFF3E0;color:#E65100}
.badge-live{background:#FCE4EC;color:var(--primary);animation:badge-blink 1.5s infinite}
@keyframes badge-blink{0%,100%{opacity:1}50%{opacity:0.5}}

/* ---- 响应式 ---- */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .ai-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .community-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .section{padding:52px 0}
  .section-title{font-size:1.6rem}
  .nav-menu,.nav-actions .search-bar{display:none}
  .hamburger{display:flex}
  .hero{min-height:460px}
  .hero h1{font-size:1.8rem}
  .hero-stats{gap:20px}
  .hero-stat-num{font-size:1.4rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .community-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .container{padding:0 14px}
  .hero-btns{flex-direction:column}
  .hero-stats{flex-wrap:wrap;gap:16px}
  .howto-steps{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
}

/* ---- 懒加载占位 ---- */
img[loading="lazy"]{background:var(--bg-gray)}

/* ---- 滚动动画 ---- */
.fade-in{opacity:0;transform:translateY(20px);transition:opacity 0.6s ease,transform 0.6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ---- 移动端菜单 ---- */
.mobile-menu{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:2000}
.mobile-menu.open{display:block}
.mobile-menu-panel{position:absolute;top:0;right:0;width:280px;height:100%;background:#fff;padding:24px;overflow-y:auto;transform:translateX(100%);transition:transform var(--transition)}
.mobile-menu.open .mobile-menu-panel{transform:translateX(0)}
.mobile-menu-close{display:flex;justify-content:flex-end;margin-bottom:20px}
.mobile-nav-links{display:flex;flex-direction:column;gap:4px}
.mobile-nav-links a{padding:12px 16px;border-radius:var(--radius-sm);font-size:0.95rem;font-weight:500;color:var(--text-mid);display:block;transition:all var(--transition)}
.mobile-nav-links a:hover{background:var(--primary-light);color:var(--primary)}
.mobile-search{margin-top:20px}
.mobile-search input{width:100%;padding:10px 16px;border:1.5px solid var(--border);border-radius:50px;font-size:0.9rem;outline:none}
.mobile-search input:focus{border-color:var(--primary)}