/* ========================================
   糖心vlog 原创样式表
   配色方案：深海蓝 #1B2A4A + 玫瑰红 #E8446D + 琥珀金 #F7B733
   ======================================== */

/* === 基础重置与全局变量 === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --tx-primary:#1B2A4A;
  --tx-accent:#E8446D;
  --tx-gold:#F7B733;
  --tx-bg:#F9FAFB;
  --tx-bg-alt:#EEF2F7;
  --tx-text:#1E293B;
  --tx-text-light:#64748B;
  --tx-white:#FFFFFF;
  --tx-radius:12px;
  --tx-shadow:0 4px 24px rgba(27,42,74,0.08);
  --tx-shadow-hover:0 8px 32px rgba(27,42,74,0.15);
  --tx-transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--tx-text);background:var(--tx-bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--tx-accent);text-decoration:none;transition:var(--tx-transition)}
a:hover{color:var(--tx-primary)}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}

/* === 容器 === */
.tx-container{max-width:1240px;margin:0 auto;padding:0 20px}

/* === 头部导航 === */
.tx-header{background:var(--tx-primary);position:sticky;top:0;z-index:1000;box-shadow:0 2px 16px rgba(0,0,0,0.2)}
.tx-header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.tx-logo img{height:42px;width:auto}
.tx-nav-list{display:flex;gap:4px}
.tx-nav-list a{color:rgba(255,255,255,0.8);padding:8px 16px;border-radius:8px;font-size:0.95rem;font-weight:500;transition:var(--tx-transition)}
.tx-nav-list a:hover,.tx-nav-list .tx-nav-active{color:var(--tx-white);background:rgba(232,68,109,0.25)}
.tx-header-actions{display:flex;align-items:center;gap:12px}

/* === 搜索框 === */
.tx-search-box{position:relative;display:flex;align-items:center}
.tx-search-box input{width:220px;height:38px;padding:0 40px 0 14px;border:1px solid rgba(255,255,255,0.2);border-radius:20px;background:rgba(255,255,255,0.1);color:var(--tx-white);font-size:0.88rem;transition:var(--tx-transition);outline:none}
.tx-search-box input::placeholder{color:rgba(255,255,255,0.5)}
.tx-search-box input:focus{border-color:var(--tx-accent);background:rgba(255,255,255,0.15);width:280px}
#searchBtn{position:absolute;right:4px;top:50%;transform:translateY(-50%);background:none;border:none;color:rgba(255,255,255,0.7);cursor:pointer;padding:6px;border-radius:50%}
#searchBtn:hover{color:var(--tx-white);background:rgba(232,68,109,0.3)}

/* === 移动端菜单按钮 === */
.tx-mobile-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.tx-mobile-toggle span{width:24px;height:2px;background:var(--tx-white);border-radius:2px;transition:var(--tx-transition)}

/* === Hero区域 === */
.tx-hero{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden}
.tx-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;background-repeat:no-repeat}
.tx-hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(27,42,74,0.92) 0%,rgba(232,68,109,0.75) 100%)}
.tx-hero-content{position:relative;z-index:2;max-width:800px;padding:60px 0}
.tx-hero h1{font-size:2.4rem;color:var(--tx-white);font-weight:700;line-height:1.3;margin-bottom:16px}
.tx-hero-desc{color:rgba(255,255,255,0.88);font-size:1.1rem;line-height:1.8;margin-bottom:32px}
.tx-hero-stats{display:flex;gap:40px;margin-bottom:36px}
.tx-stat-item{text-align:center}
.tx-stat-num{display:block;font-size:2rem;font-weight:700;color:var(--tx-gold)}
.tx-stat-label{font-size:0.85rem;color:rgba(255,255,255,0.7);margin-top:4px}
.tx-hero-btns{display:flex;gap:16px}

/* === 按钮 === */
.tx-btn{display:inline-block;padding:12px 28px;border-radius:8px;font-size:0.95rem;font-weight:600;cursor:pointer;transition:var(--tx-transition);border:2px solid transparent;text-align:center}
.tx-btn-primary{background:var(--tx-accent);color:var(--tx-white);border-color:var(--tx-accent)}
.tx-btn-primary:hover{background:#d13a5e;border-color:#d13a5e;color:var(--tx-white);transform:translateY(-2px);box-shadow:0 6px 20px rgba(232,68,109,0.35)}
.tx-btn-outline{background:transparent;color:var(--tx-white);border-color:rgba(255,255,255,0.5)}
.tx-btn-outline:hover{background:var(--tx-white);color:var(--tx-primary)}
.tx-btn-secondary{background:var(--tx-primary);color:var(--tx-white);border-color:var(--tx-primary)}
.tx-btn-secondary:hover{background:#152238;transform:translateY(-2px)}
.tx-btn-sm{padding:8px 18px;font-size:0.85rem;border-radius:6px;background:var(--tx-accent);color:var(--tx-white)}
.tx-btn-sm:hover{background:#d13a5e;color:var(--tx-white)}
.tx-btn-outline-sm{padding:8px 18px;font-size:0.85rem;border-radius:6px;background:transparent;color:var(--tx-accent);border:1px solid var(--tx-accent)}
.tx-btn-outline-sm:hover{background:var(--tx-accent);color:var(--tx-white)}

/* === 通用Section === */
.tx-section{padding:72px 0}
.tx-section-alt{background:var(--tx-bg-alt)}
.tx-section-header{text-align:center;max-width:800px;margin:0 auto 48px}
.tx-section-header h2{font-size:1.8rem;color:var(--tx-primary);margin-bottom:12px;font-weight:700;position:relative}
.tx-section-header h2::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,var(--tx-accent),var(--tx-gold));margin:12px auto 0;border-radius:2px}
.tx-section-header p{color:var(--tx-text-light);font-size:0.95rem;line-height:1.8}
.tx-section-more{text-align:center;margin-top:40px}

/* === 视频卡片网格 === */
.tx-video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-video-card{background:var(--tx-white);border-radius:var(--tx-radius);overflow:hidden;box-shadow:var(--tx-shadow);transition:var(--tx-transition);cursor:pointer;border-left:4px solid var(--tx-accent)}
.tx-video-card:hover{transform:translateY(-6px);box-shadow:var(--tx-shadow-hover)}
.tx-video-thumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.tx-video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease}
.tx-video-card:hover .tx-video-thumb img{transform:scale(1.05)}
.tx-play-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:52px;height:52px;background:rgba(232,68,109,0.85);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--tx-white);font-size:1.2rem;transition:var(--tx-transition);padding-left:4px}
.tx-video-card:hover .tx-play-icon{background:var(--tx-accent);transform:translate(-50%,-50%) scale(1.1)}
.tx-video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,0.75);color:var(--tx-white);padding:2px 8px;border-radius:4px;font-size:0.78rem}
.tx-video-info{padding:16px}
.tx-video-info h3{font-size:0.95rem;color:var(--tx-text);margin-bottom:8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tx-video-meta{display:flex;gap:12px;font-size:0.8rem;color:var(--tx-text-light);margin-bottom:8px}
.tx-video-tags{display:flex;gap:6px;flex-wrap:wrap}
.tx-tag{background:var(--tx-bg-alt);color:var(--tx-text-light);padding:2px 10px;border-radius:12px;font-size:0.75rem}

/* === 服务卡片 === */
.tx-service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-service-card{background:var(--tx-white);padding:32px 24px;border-radius:var(--tx-radius);box-shadow:var(--tx-shadow);transition:var(--tx-transition);border-top:3px solid transparent;text-align:center}
.tx-service-card:hover{transform:translateY(-4px);box-shadow:var(--tx-shadow-hover);border-top-color:var(--tx-accent)}
.tx-service-icon{font-size:2.4rem;margin-bottom:16px}
.tx-service-card h3{font-size:1.05rem;color:var(--tx-primary);margin-bottom:10px}
.tx-service-card p{color:var(--tx-text-light);font-size:0.9rem;line-height:1.7}

/* === AI卡片 === */
.tx-ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-ai-card{background:var(--tx-white);padding:32px 24px;border-radius:var(--tx-radius);box-shadow:var(--tx-shadow);transition:var(--tx-transition);border-left:4px solid var(--tx-gold)}
.tx-ai-card:hover{transform:translateY(-4px);box-shadow:var(--tx-shadow-hover)}
.tx-ai-card h3{font-size:1.1rem;color:var(--tx-primary);margin-bottom:12px}
.tx-ai-card p{color:var(--tx-text-light);font-size:0.9rem;line-height:1.7;margin-bottom:16px}
.tx-ai-features{padding-left:18px}
.tx-ai-features li{color:var(--tx-text);font-size:0.88rem;margin-bottom:6px;position:relative;padding-left:12px}
.tx-ai-features li::before{content:'';position:absolute;left:0;top:8px;width:6px;height:6px;background:var(--tx-accent);border-radius:50%}

/* === 娱乐卡片 === */
.tx-ent-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-ent-card{position:relative;border-radius:var(--tx-radius);overflow:hidden;aspect-ratio:16/10;box-shadow:var(--tx-shadow)}
.tx-ent-card img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.tx-ent-card:hover img{transform:scale(1.08)}
.tx-ent-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(27,42,74,0.95) 0%,rgba(27,42,74,0.3) 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:24px;transition:var(--tx-transition)}
.tx-ent-overlay h3{color:var(--tx-white);font-size:1.15rem;margin-bottom:8px}
.tx-ent-overlay p{color:rgba(255,255,255,0.8);font-size:0.88rem;line-height:1.6;margin-bottom:12px}

/* === 社区功能卡片 === */
.tx-comm-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tx-comm-card{background:var(--tx-white);padding:28px 20px;border-radius:var(--tx-radius);box-shadow:var(--tx-shadow);text-align:center;transition:var(--tx-transition)}
.tx-comm-card:hover{transform:translateY(-4px);box-shadow:var(--tx-shadow-hover)}
.tx-comm-icon{font-size:2.2rem;margin-bottom:14px}
.tx-comm-card h3{font-size:1rem;color:var(--tx-primary);margin-bottom:10px}
.tx-comm-card p{color:var(--tx-text-light);font-size:0.88rem;line-height:1.7}

/* === 专家卡片 === */
.tx-expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tx-expert-card{background:var(--tx-white);padding:28px 20px;border-radius:var(--tx-radius);box-shadow:var(--tx-shadow);text-align:center;transition:var(--tx-transition)}
.tx-expert-card:hover{transform:translateY(-4px);box-shadow:var(--tx-shadow-hover)}
.tx-expert-avatar{font-size:3rem;margin-bottom:12px;color:var(--tx-primary)}
.tx-expert-card h3{font-size:1.05rem;color:var(--tx-text);margin-bottom:4px}
.tx-expert-title{color:var(--tx-accent);font-size:0.85rem;font-weight:600;margin-bottom:10px}
.tx-expert-desc{color:var(--tx-text-light);font-size:0.85rem;line-height:1.7;margin-bottom:12px}
.tx-expert-tags{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;margin-bottom:14px}
.tx-expert-tags span{background:var(--tx-bg-alt);color:var(--tx-text-light);padding:2px 10px;border-radius:12px;font-size:0.75rem}
.tx-expert-actions{display:flex;gap:8px;justify-content:center}

/* === 品牌墙 === */
.tx-brand-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tx-brand-item{background:var(--tx-white);padding:24px;border-radius:var(--tx-radius);box-shadow:var(--tx-shadow);display:flex;align-items:center;justify-content:center;min-height:80px;transition:var(--tx-transition)}
.tx-brand-item:hover{box-shadow:var(--tx-shadow-hover);transform:translateY(-2px)}
.tx-brand-item span{font-size:1.1rem;font-weight:600;color:var(--tx-primary)}

/* === 步骤卡片 === */
.tx-steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tx-step-card{background:var(--tx-white);padding:28px 20px;border-radius:var(--tx-radius);box-shadow:var(--tx-shadow);text-align:center;transition:var(--tx-transition);position:relative}
.tx-step-card:hover{transform:translateY(-4px);box-shadow:var(--tx-shadow-hover)}
.tx-step-num{font-size:2.5rem;font-weight:800;color:var(--tx-bg-alt);background:linear-gradient(135deg,var(--tx-accent),var(--tx-gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:12px}
.tx-step-card h3{font-size:1rem;color:var(--tx-primary);margin-bottom:10px}
.tx-step-card p{color:var(--tx-text-light);font-size:0.88rem;line-height:1.7}

/* === 评论卡片 === */
.tx-review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-review-card{background:var(--tx-white);padding:28px;border-radius:var(--tx-radius);box-shadow:var(--tx-shadow);transition:var(--tx-transition);border-bottom:3px solid var(--tx-gold)}
.tx-review-card:hover{transform:translateY(-3px);box-shadow:var(--tx-shadow-hover)}
.tx-review-stars{color:var(--tx-gold);font-size:1.2rem;margin-bottom:12px;letter-spacing:2px}
.tx-review-text{color:var(--tx-text);font-size:0.92rem;line-height:1.8;margin-bottom:14px;font-style:italic}
.tx-review-author{color:var(--tx-text-light);font-size:0.85rem}
.tx-review-author strong{color:var(--tx-primary)}

/* === FAQ === */
.tx-faq-list{max-width:800px;margin:0 auto}
.tx-faq-item{background:var(--tx-white);border-radius:var(--tx-radius);margin-bottom:12px;box-shadow:var(--tx-shadow);overflow:hidden}
.tx-faq-q{padding:18px 24px;font-weight:600;color:var(--tx-primary);cursor:pointer;position:relative;padding-right:48px;font-size:0.95rem;transition:var(--tx-transition)}
.tx-faq-q:hover{color:var(--tx-accent)}
.tx-faq-q::after{content:'+';position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:1.4rem;color:var(--tx-accent);transition:var(--tx-transition)}
.tx-faq-item.active .tx-faq-q::after{content:'-';transform:translateY(-50%) rotate(180deg)}
.tx-faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.4s ease;color:var(--tx-text-light);font-size:0.9rem;line-height:1.8}
.tx-faq-item.active .tx-faq-a{padding:0 24px 18px;max-height:500px}

/* === 联系我们 === */
.tx-contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.tx-contact-item{display:flex;align-items:flex-start;gap:14px;margin-bottom:18px}
.tx-contact-icon{font-size:1.5rem;flex-shrink:0;width:40px;text-align:center}
.tx-contact-text{display:flex;flex-direction:column}
.tx-contact-text strong{color:var(--tx-primary);font-size:0.9rem;margin-bottom:2px}
.tx-contact-text span{color:var(--tx-text-light);font-size:0.88rem}
.tx-contact-qrcode{display:flex;gap:24px;justify-content:center}
.tx-qr-item{text-align:center}
.tx-qr-item img{width:180px;height:180px;border-radius:var(--tx-radius);box-shadow:var(--tx-shadow);margin-bottom:8px}
.tx-qr-item p{color:var(--tx-text-light);font-size:0.85rem}

/* === 社交分享 === */
.tx-share-bar{display:flex;align-items:center;justify-content:center;gap:24px;padding:20px 0}
.tx-share-bar h3{color:var(--tx-primary);font-size:1rem}
.tx-share-btns{display:flex;gap:10px}
.tx-share-btn{padding:8px 18px;border-radius:20px;border:1px solid var(--tx-primary);background:var(--tx-white);color:var(--tx-primary);font-size:0.85rem;cursor:pointer;transition:var(--tx-transition);font-weight:500}
.tx-share-btn:hover{background:var(--tx-primary);color:var(--tx-white)}

/* === 页脚 === */
.tx-footer{background:var(--tx-primary);color:rgba(255,255,255,0.75);padding:56px 0 0}
.tx-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.1)}
.tx-footer-col img{margin-bottom:14px}
.tx-footer-col p{font-size:0.88rem;line-height:1.7;margin-bottom:6px}
.tx-footer-col h4{color:var(--tx-white);font-size:1rem;margin-bottom:16px;font-weight:600}
.tx-footer-col ul li{margin-bottom:8px}
.tx-footer-col ul a{color:rgba(255,255,255,0.65);font-size:0.88rem;transition:var(--tx-transition)}
.tx-footer-col ul a:hover{color:var(--tx-white);padding-left:4px}
.tx-footer-bottom{text-align:center;padding:20px 0;font-size:0.82rem;color:rgba(255,255,255,0.5)}
.tx-footer-bottom a{color:var(--tx-gold)}

/* === 视频播放弹窗 === */
.tx-video-modal{display:none;position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,0.9);align-items:center;justify-content:center}
.tx-video-modal.active{display:flex}
.tx-video-modal-inner{position:relative;width:90%;max-width:900px;aspect-ratio:16/9}
.tx-video-modal-inner video{width:100%;height:100%;border-radius:8px}
.tx-video-modal-close{position:absolute;top:-40px;right:0;color:var(--tx-white);font-size:2rem;cursor:pointer;background:none;border:none;line-height:1}

/* === 响应式 === */
@media(max-width:1024px){
  .tx-video-grid,.tx-service-grid,.tx-ai-grid,.tx-ent-grid,.tx-review-grid{grid-template-columns:repeat(2,1fr)}
  .tx-comm-grid,.tx-expert-grid,.tx-steps-grid,.tx-brand-wall{grid-template-columns:repeat(2,1fr)}
  .tx-footer-grid{grid-template-columns:1fr 1fr}
  .tx-contact-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .tx-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--tx-primary);padding:16px;box-shadow:0 8px 24px rgba(0,0,0,0.3)}
  .tx-nav.active{display:block}
  .tx-nav-list{flex-direction:column;gap:4px}
  .tx-nav-list a{display:block;padding:12px 16px}
  .tx-mobile-toggle{display:flex}
  .tx-search-box input{width:160px}
  .tx-search-box input:focus{width:200px}
  .tx-hero{min-height:auto;padding:40px 0}
  .tx-hero h1{font-size:1.6rem}
  .tx-hero-stats{flex-direction:column;gap:16px}
  .tx-hero-btns{flex-direction:column;gap:10px}
  .tx-stat-num{font-size:1.5rem}
  .tx-section{padding:48px 0}
  .tx-section-header h2{font-size:1.4rem}
  .tx-video-grid,.tx-service-grid,.tx-ai-grid,.tx-ent-grid,.tx-review-grid,.tx-comm-grid,.tx-expert-grid,.tx-steps-grid,.tx-brand-wall{grid-template-columns:1fr}
  .tx-footer-grid{grid-template-columns:1fr}
  .tx-share-bar{flex-direction:column;gap:12px}
  .tx-contact-qrcode{flex-direction:column;align-items:center}
  .tx-hero-content{padding:30px 0}
}
@media(max-width:480px){
  .tx-hero h1{font-size:1.3rem}
  .tx-hero-desc{font-size:0.95rem}
  .tx-section-header h2{font-size:1.2rem}
  .tx-search-box input{width:120px}
  .tx-search-box input:focus{width:160px}
}

/* === 面包屑导航 === */
.tx-breadcrumb{background:var(--tx-bg-alt);padding:12px 0;font-size:0.85rem;color:var(--tx-text-light);border-bottom:1px solid #e2e8f0}
.tx-breadcrumb a{color:var(--tx-accent);font-size:0.85rem}
.tx-breadcrumb a:hover{text-decoration:underline}

/* === 视频播放器 === */
.tx-player-wrap{max-width:900px;margin:0 auto 24px;border-radius:var(--tx-radius);overflow:hidden;box-shadow:var(--tx-shadow-hover);background:#000}
.tx-player-wrap video{width:100%;display:block;aspect-ratio:16/9}
.tx-player-info{max-width:900px;margin:0 auto}
.tx-player-info h1{font-size:1.6rem;color:var(--tx-primary);margin-bottom:12px}
.tx-player-info p{color:var(--tx-text-light);font-size:0.95rem;line-height:1.8}


/* === 法律页面样式 === */
.tx-legal-content{max-width:900px;margin:0 auto}
.tx-legal-content h2{font-size:1.35rem;color:var(--tx-primary);margin:36px 0 14px;padding-bottom:10px;border-bottom:2px solid var(--tx-bg-alt)}
.tx-legal-content p{color:var(--tx-text);line-height:1.9;margin-bottom:14px;font-size:0.98rem}
.tx-legal-content .tx-ai-features{margin:12px 0 20px 20px}
.tx-legal-content .tx-ai-features li{position:relative;padding-left:20px;margin-bottom:8px;color:var(--tx-text);font-size:0.95rem;line-height:1.7}
.tx-legal-content .tx-ai-features li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--tx-accent)}