/* ===== AI换脸 - 全站CSS | de577354.cn ===== */
:root {
  --primary: #e8420a;
  --primary-dark: #c23508;
  --primary-light: #ff6b35;
  --secondary: #1a1a2e;
  --accent: #ffd700;
  --bg: #f8f7f5;
  --bg-alt: #fff;
  --text: #1a1a1a;
  --text-light: #666;
  --text-muted: #999;
  --border: #e8e8e8;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-hover: 0 12px 40px rgba(155,89,182,0.18);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}
*,*::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 Neue',Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary)}
ul{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}
input,button{font-family:inherit}
p{margin-bottom:0}

/* ===== 顶部公告栏 ===== */
.top-bar{background:var(--secondary);color:rgba(255,255,255,.85);font-size:13px;padding:8px 20px}
.top-bar-inner{max-width:1280px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.top-bar a{color:rgba(255,255,255,.85)}
.top-bar a:hover{color:var(--primary-light)}
.top-bar-social{display:flex;gap:12px}

/* ===== 主导航 ===== */
.site-header{background:#fff;box-shadow:0 2px 16px rgba(0,0,0,.08);position:sticky;top:0;z-index:100;border-bottom:3px solid var(--primary)}
.header-inner{max-width:1280px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px}
.site-logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo-icon{width:48px;height:48px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:900;color:#fff;letter-spacing:-1px;flex-shrink:0}
.logo-sub{display:block;font-size:12px;color:var(--text-light);margin-top:1px}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:8px 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--text);white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:var(--primary);background:rgba(155,89,182,.07)}
.main-nav .nav-cta{background:var(--primary);color:#fff!important;padding:8px 18px;border-radius:20px;font-weight:700}
.main-nav .nav-cta:hover{background:var(--primary-dark)}
.hamburger{display:none;flex-direction:column;gap:5px;padding:8px}
.hamburger span{display:block;width:24px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition)}

/* ===== 搜索栏 ===== */
.search-bar-wrap{background:#fff;border-bottom:1px solid var(--border);padding:10px 20px}
.search-bar-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.search-form{display:flex;flex:1;max-width:600px;border:2px solid var(--border);border-radius:24px;overflow:hidden;transition:var(--transition)}
.search-form:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(155,89,182,.1)}
.search-form input{flex:1;padding:10px 18px;border:none;outline:none;font-size:14px;background:transparent}
.search-form button{padding:10px 22px;background:var(--primary);color:#fff;font-size:14px;font-weight:600;white-space:nowrap}
.search-form button:hover{background:var(--primary-dark)}
.search-hot-tags{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-light)}
.search-hot-tags a{padding:4px 12px;background:rgba(155,89,182,.07);border-radius:12px;color:var(--primary);font-size:12px}
.search-hot-tags a:hover{background:var(--primary);color:#fff}

/* ===== 移动端导航 ===== */
.mobile-nav{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:#fff;z-index:200;transition:right .3s ease;box-shadow:-4px 0 24px rgba(0,0,0,.15);overflow-y:auto}
.mobile-nav.open{right:0}
.mobile-nav-inner{padding:20px;display:flex;flex-direction:column;gap:4px}
.mobile-nav-close{display:flex;justify-content:flex-end;margin-bottom:16px}
.mobile-nav-close button{width:36px;height:36px;border-radius:50%;background:var(--bg);font-size:16px;display:flex;align-items:center;justify-content:center}
.mobile-nav a{padding:14px 16px;border-radius:10px;font-size:15px;font-weight:500;color:var(--text);display:block;border-bottom:1px solid var(--border)}
.mobile-nav a:hover{color:var(--primary);background:rgba(155,89,182,.05)}

/* ===== Hero Banner ===== */
.hero-banner{position:relative;min-height:620px;display:flex;align-items:center;overflow:hidden}
.6celp{position:absolute;inset:0;background:url('../images/banner.jpg') center/cover no-repeat}
.rk241m{position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,26,46,.88) 0%,rgba(155,89,182,.55) 100%)}
.3qa3x{position:relative;z-index:2;max-width:1280px;margin:0 auto;padding:80px 20px;width:100%}
.94goz1a0{display:inline-block;background:rgba(155,89,182,.85);color:#fff;padding:6px 18px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:20px;letter-spacing:.5px}
.3qa3x h1{font-size:clamp(28px,5vw,52px);font-weight:900;color:#fff;line-height:1.2;margin-bottom:20px}
.3qa3x h1 em{color:var(--primary-light);font-style:normal}
.e3u3agr{font-size:17px;color:rgba(255,255,255,.88);max-width:680px;margin-bottom:32px;line-height:1.8}
.dpv8tbci{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;background:var(--primary);color:#fff;border-radius:28px;font-size:16px;font-weight:700;box-shadow:0 4px 20px rgba(155,89,182,.4);transition:var(--transition)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 28px rgba(155,89,182,.5);color:#fff}
.btn-outline{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border:2px solid rgba(255,255,255,.7);color:#fff;border-radius:28px;font-size:16px;font-weight:600;transition:var(--transition)}
.btn-outline:hover{background:rgba(255,255,255,.15);border-color:#fff;color:#fff}
.4j44ltz5{display:flex;gap:32px;flex-wrap:wrap}
.mzrp438 .1ge19aj{font-size:28px;font-weight:900;color:var(--accent)}
.mzrp438 .15xhx{font-size:13px;color:rgba(255,255,255,.7);margin-top:2px}

/* ===== 数据统计条 ===== */
.z7vm9{background:linear-gradient(135deg,var(--primary),var(--primary-dark));padding:28px 20px}
.tc2on{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tu2fc{text-align:center;color:#fff}
.q0s81g{font-size:32px;font-weight:900;color:var(--accent)}
.04wek{font-size:13px;opacity:.85;margin-top:4px}

/* ===== 通用Section ===== */
.section{padding:80px 20px}
.section-alt{background:#fff}
.container{max-width:1280px;margin:0 auto}
.section-header{text-align:center;margin-bottom:48px}
.section-tag{display:inline-block;background:rgba(155,89,182,.1);color:var(--primary);padding:5px 16px;border-radius:14px;font-size:13px;font-weight:700;margin-bottom:12px}
.section-title{font-size:clamp(22px,3.5vw,36px);font-weight:900;color:var(--secondary);margin-bottom:12px}
.section-desc{font-size:16px;color:var(--text-light);max-width:640px;margin:0 auto}

/* ===== 功能卡片 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:#fff;border-radius:var(--radius);padding:32px 24px;box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:rgba(155,89,182,.2)}
.feature-icon{font-size:36px;margin-bottom:16px}
.feature-card h3{font-size:18px;font-weight:800;color:var(--secondary);margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-light);line-height:1.7}

/* ===== 视频Tab ===== */
.tab-wrap{margin-bottom:32px}
.tab-nav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px;border-bottom:2px solid var(--border)}
.tab-btn{padding:10px 20px;border-radius:8px 8px 0 0;font-size:14px;font-weight:600;color:var(--text-light);background:transparent;border:2px solid transparent;border-bottom:none;margin-bottom:-2px;transition:var(--transition)}
.tab-btn.active,.tab-btn:hover{color:var(--primary);background:rgba(155,89,182,.07)}
.tab-btn.active{border-color:var(--border);border-bottom-color:#fff}
.tab-content{display:none}
.tab-content.active{display:block}

/* ===== 视频网格 ===== */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border)}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#111;cursor:pointer}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.8xr41{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0);transition:background .3s ease}
.video-card:hover .8xr41{background:rgba(0,0,0,.45)}
.03iq7n8{width:56px;height:56px;background:rgba(155,89,182,.92);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transform:scale(.7);transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 20px rgba(155,89,182,.5)}
.03iq7n8 svg{fill:#fff;width:26px;height:26px;margin-left:3px}
.video-card:hover .03iq7n8{opacity:1;transform:scale(1)}
.video-duration{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,.75);color:#fff;font-size:12px;font-weight:600;padding:3px 8px;border-radius:5px}
.video-badge{position:absolute;top:10px;left:10px;background:var(--primary);color:#fff;font-size:11px;font-weight:700;padding:3px 10px;border-radius:10px}
.video-info{padding:16px}
.video-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:10px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:12px;font-size:12px;color:var(--text-muted);margin-bottom:10px;flex-wrap:wrap}
.video-tags{display:flex;gap:6px;flex-wrap:wrap}
.video-tag{padding:3px 10px;background:rgba(155,89,182,.08);color:var(--primary);border-radius:10px;font-size:11px;font-weight:600}

/* ===== 通知条 ===== */
.5mcxuv{background:rgba(155,89,182,.06);border:1px solid rgba(155,89,182,.15);border-radius:10px;padding:12px 20px;margin-bottom:24px;font-size:13px;color:var(--text-light);display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.5mcxuv a{color:var(--primary);font-weight:600}
.5mcxuv a:hover{text-decoration:underline}

/* ===== 进度条 ===== */
.n1o9j5{height:8px;background:var(--border);border-radius:4px;overflow:hidden}
.lxx11{height:100%;background:linear-gradient(90deg,var(--primary),var(--primary-light));border-radius:4px;transition:width 1.5s ease}

/* ===== 专家卡片 ===== */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);border:1px solid var(--border)}
.expert-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.expert-avatar{aspect-ratio:1;overflow:hidden;background:var(--bg)}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-info{padding:20px}
.expert-name{font-size:18px;font-weight:800;color:var(--secondary);margin-bottom:4px}
.expert-role{font-size:13px;color:var(--primary);font-weight:600;margin-bottom:10px}
.expert-bio{font-size:13px;color:var(--text-light);line-height:1.6;margin-bottom:12px}
.expert-awards{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.expert-award{padding:3px 10px;background:rgba(255,215,0,.15);color:#b8860b;border-radius:10px;font-size:11px;font-weight:600;border:1px solid rgba(255,215,0,.3)}
.expert-btns{display:flex;gap:8px}
.expert-btn{flex:1;padding:8px;border-radius:8px;font-size:13px;font-weight:600;text-align:center;border:2px solid var(--primary);color:var(--primary);transition:var(--transition);display:block}
.expert-btn.u1b5qf86{background:var(--primary);color:#fff}
.expert-btn:hover{background:var(--primary-dark);color:#fff;border-color:var(--primary-dark)}

/* ===== 合作品牌 ===== */
.ruzy84jc{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.fne2lfh{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px;text-align:center;font-size:16px;font-weight:800;color:var(--text-light);transition:var(--transition)}
.fne2lfh:hover{border-color:var(--primary);color:var(--primary);box-shadow:var(--shadow)}

/* ===== 用户评价 ===== */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:#fff;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);border:1px solid var(--border);transition:var(--transition)}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.review-stars{font-size:18px;color:var(--accent);margin-bottom:14px;letter-spacing:2px}
.review-text{font-size:14px;color:var(--text-light);line-height:1.8;margin-bottom:18px;font-style:italic}
.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(--primary-light));color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;flex-shrink:0}
.review-name{font-size:15px;font-weight:700;color:var(--text)}
.review-label{font-size:12px;color:var(--text-muted);margin-top:2px}

/* ===== 联系我们 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.contact-card{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);border:1px solid var(--border)}
.contact-card h3{font-size:20px;font-weight:800;color:var(--secondary);margin-bottom:20px;padding-bottom:14px;border-bottom:2px solid rgba(155,89,182,.15)}
.contact-item{display:flex;gap:14px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--border)}
.contact-item:last-child{border-bottom:none}
.contact-icon{font-size:20px;flex-shrink:0;margin-top:2px}
.contact-text{display:flex;flex-direction:column;gap:3px}
.contact-text strong{font-size:14px;font-weight:700;color:var(--text)}
.contact-text span{font-size:14px;color:var(--text-light)}
.mvl8sfb{display:flex;gap:16px;margin-top:16px}
.6wpjg{flex:1;text-align:center}
.f556z{width:100%;aspect-ratio:1;border-radius:10px;border:1px solid var(--border);overflow:hidden}
.193qd{font-size:12px;color:var(--text-muted);margin-top:6px}

/* ===== 社区互动 ===== */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.community-card{background:#fff;border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);border:1px solid var(--border);transition:var(--transition);display:block}
.community-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(155,89,182,.2);color:var(--text)}
.community-icon{font-size:32px;margin-bottom:12px}
.community-card h4{font-size:17px;font-weight:800;color:var(--secondary);margin-bottom:8px}
.community-card p{font-size:13px;color:var(--text-light);line-height:1.6}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;margin:0 auto}
.faq-item{background:#fff;border-radius:var(--radius-sm);border:1px solid var(--border);overflow:hidden;transition:var(--transition)}
.faq-item.open{border-color:rgba(155,89,182,.3);box-shadow:0 4px 16px rgba(155,89,182,.1)}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;font-size:15px;font-weight:700;color:var(--text);cursor:pointer;user-select:none;gap:12px}
.faq-q:hover{color:var(--primary)}
.faq-item.open .faq-q{color:var(--primary)}
.faq-icon{font-size:20px;font-weight:400;color:var(--primary);flex-shrink:0;transition:transform .3s ease}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-item.open .faq-a{max-height:500px}
.faq-a>div{padding:0 22px 18px;font-size:14px;color:var(--text-light);line-height:1.8;border-top:1px solid var(--border);padding-top:16px}

/* ===== 分享栏 ===== */
.1faj0fp{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:#fff;border-radius:var(--radius);padding:20px 28px;box-shadow:var(--shadow);border:1px solid var(--border)}
.zypinn2n{font-size:14px;font-weight:600;color:var(--text)}
.79cot64t{padding:8px 20px;border-radius:20px;font-size:13px;font-weight:600;transition:var(--transition)}
.6s92qjh8{background:#07c160;color:#fff}
.3nv79ua{background:#e6162d;color:#fff}
.5z1q9jih{background:#010101;color:#fff}
.3hsmyl{background:#00a1d6;color:#fff}
.79cot64t:hover{opacity:.85;transform:translateY(-2px)}

/* ===== 显示更多按钮 ===== */
.btj13ob{display:inline-block;margin:28px auto 0;padding:12px 32px;border:2px solid var(--primary);color:var(--primary);border-radius:24px;font-size:15px;font-weight:700;transition:var(--transition)}
.btj13ob:hover{background:var(--primary);color:#fff}

/* ===== 页脚 ===== */
.site-footer{background:var(--secondary);color:rgba(255,255,255,.85);padding:60px 20px 0}
.footer-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;padding-bottom:40px}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.6);line-height:1.8;margin-top:16px}
.footer-col h4{font-size:16px;font-weight:800;color:#fff;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid rgba(155,89,182,.4)}
.footer-col ul{display:flex;flex-direction:column;gap:8px}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.65);transition:var(--transition)}
.footer-col ul li a:hover{color:var(--primary-light);padding-left:4px}
.footer-contact-item{display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.65)}
.footer-contact-item span:first-child{font-size:16px;flex-shrink:0;margin-top:1px}
.update-time{color:rgba(255,255,255,.4);font-size:12px}

/* ===== 视频模态框 ===== */
.video-modal{position:fixed;inset:0;background:rgba(0,0,0,.88);z-index:1000;display:none;align-items:center;justify-content:center;padding:20px}
.video-modal.open{display:flex}
.video-modal-inner{position:relative;width:100%;max-width:900px;background:#111;border-radius:18px;overflow:hidden}
.video-modal-close{position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.15);color:#fff;font-size:16px;display:flex;align-items:center;justify-content:center;z-index:10;transition:var(--transition)}
.video-modal-close:hover{background:var(--primary)}
.7ogscydp{aspect-ratio:16/9;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:rgba(255,255,255,.8);font-size:16px;font-weight:600;background:linear-gradient(135deg,#1a1a2e,#16213e)}
.594skl53{width:80px;height:80px;background:rgba(155,89,182,.85);border-radius:50%;display:flex;align-items:center;justify-content:center}
.594skl53 svg{fill:#fff;width:40px;height:40px;margin-left:5px}

/* ===== 懒加载动画 ===== */
.3q6e5{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.3q6e5.visible{opacity:1;transform:translateY(0)}

/* ===== 内页通用 ===== */
.page-hero{background:linear-gradient(135deg,var(--secondary) 0%,rgba(155,89,182,.85) 100%);padding:60px 20px;text-align:center;color:#fff}
.page-hero h1{font-size:clamp(24px,4vw,42px);font-weight:900;margin-bottom:12px}
.page-hero p{font-size:16px;opacity:.85;max-width:600px;margin:0 auto 16px}
.breadcrumb{display:flex;gap:8px;align-items:center;font-size:13px;color:rgba(255,255,255,.65);justify-content:center;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.65)}
.breadcrumb a:hover{color:#fff}
.breadcrumb-sep{opacity:.4}
.inner-section{padding:60px 20px}
.inner-section-alt{background:#fff}
.article-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border);transition:var(--transition)}
.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.article-card h3{font-size:17px;font-weight:700;margin-bottom:10px;color:var(--secondary)}
.article-card p{font-size:14px;color:var(--text-light);line-height:1.7}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}

/* ===== 隐私政策/服务条款 ===== */
.policy-content{max-width:860px;margin:0 auto;background:#fff;border-radius:var(--radius);padding:48px;box-shadow:var(--shadow)}
.policy-content h2{font-size:22px;font-weight:800;color:var(--secondary);margin:32px 0 12px;padding-bottom:8px;border-bottom:2px solid rgba(155,89,182,.15)}
.policy-content h2:first-child{margin-top:0}
.policy-content p,.policy-content li{font-size:15px;color:var(--text-light);line-height:1.9;margin-bottom:10px}
.policy-content ul{padding-left:20px;list-style:disc}
.policy-content strong{color:var(--text)}

/* ===== 无障碍 ===== */
:focus-visible{outline:3px solid var(--primary);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ===== 响应式 ===== */
@media(max-width:1100px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .ruzy84jc{grid-template-columns:repeat(4,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .community-grid{grid-template-columns:repeat(2,1fr)}
  .tc2on{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .main-nav{display:none}
  .hamburger{display:flex}
  .hero-banner{min-height:520px}
  .3qa3x{padding:60px 20px}
  .feature-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .video-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .community-grid{grid-template-columns:1fr}
  .ruzy84jc{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .tc2on{grid-template-columns:repeat(2,1fr)}
  .tab-btn{padding:8px 12px;font-size:13px}
  .section{padding:48px 16px}
  .policy-content{padding:24px}
  .search-bar-inner{flex-direction:column;align-items:stretch}
  .search-form{max-width:100%}
}
@media(max-width:480px){
  .4j44ltz5{gap:16px}
  .mzrp438 .1ge19aj{font-size:22px}
  .ruzy84jc{grid-template-columns:repeat(2,1fr)}
  .dpv8tbci{flex-direction:column}
  .btn-primary,.btn-outline{justify-content:center}
}
@media print{
  .site-header,.top-bar,.search-bar-wrap,.mobile-nav,.video-modal,#n2ujj,.hamburger{display:none!important}
  body{font-size:12pt}
  a{color:var(--text)!important}
}