/* ============================================
   糖心vlog - 原创样式表
   品牌色系：糖心粉 + 深玫红 + 暖金 + 深夜蓝黑
   Lpz816.cn
   ============================================ */

/* CSS Reset & Base */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --tx-pink:#FF6B9D;
  --tx-rose:#C44569;
  --tx-gold:#F8B500;
  --tx-dark:#0D0D1A;
  --tx-card:#1A1A2E;
  --tx-card2:#16213E;
  --tx-text:#FFFFFF;
  --tx-text2:#E0E0E0;
  --tx-muted:#A0A0B0;
  --tx-border:#2A2A4A;
  --tx-gradient:linear-gradient(135deg,#FF6B9D 0%,#C44569 50%,#F8B500 100%);
  --tx-gradient2:linear-gradient(135deg,#0D0D1A 0%,#1A1A2E 100%);
  --tx-shadow:0 4px 24px rgba(255,107,157,0.15);
  --tx-radius:12px;
  --tx-transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;background:var(--tx-dark);color:var(--tx-text2);line-height:1.7;overflow-x:hidden}
a{color:var(--tx-pink);text-decoration:none;transition:var(--tx-transition)}
a:hover{color:var(--tx-gold)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{color:var(--tx-text);font-weight:700;line-height:1.3}

/* Container */
.tx-container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}

/* ============================================
   Header & Navigation
   ============================================ */
.tx-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(13,13,26,0.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--tx-border);transition:var(--tx-transition)}
.tx-header.scrolled{background:rgba(13,13,26,0.98);box-shadow:0 2px 20px rgba(0,0,0,0.3)}
.tx-header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.tx-logo{display:flex;align-items:center;gap:10px}
.tx-logo img{height:42px;width:auto}
.tx-logo-text{font-size:1.3rem;font-weight:800;background:var(--tx-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.tx-nav{display:flex;align-items:center;gap:6px}
.tx-nav a{padding:8px 16px;font-size:0.9rem;color:var(--tx-text2);border-radius:8px;transition:var(--tx-transition);white-space:nowrap}
.tx-nav a:hover,.tx-nav a.active{color:var(--tx-text);background:rgba(255,107,157,0.12)}
.tx-nav a.active{color:var(--tx-pink)}
.tx-mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.tx-mobile-toggle span{width:24px;height:2px;background:var(--tx-text);border-radius:2px;transition:var(--tx-transition)}

/* Search Bar */
.tx-search-bar{background:var(--tx-card);border-bottom:1px solid var(--tx-border);padding:12px 0;margin-top:68px}
.tx-search-wrap{display:flex;align-items:center;max-width:640px;margin:0 auto;background:var(--tx-card2);border:1px solid var(--tx-border);border-radius:24px;overflow:hidden;transition:var(--tx-transition)}
.tx-search-wrap:focus-within{border-color:var(--tx-pink);box-shadow:0 0 0 3px rgba(255,107,157,0.15)}
.tx-search-wrap input{flex:1;padding:10px 20px;background:transparent;border:none;color:var(--tx-text);font-size:0.95rem;outline:none}
.tx-search-wrap input::placeholder{color:var(--tx-muted)}
.tx-search-wrap button{padding:10px 24px;background:var(--tx-gradient);border:none;color:#fff;font-size:0.9rem;cursor:pointer;transition:var(--tx-transition);font-weight:600}
.tx-search-wrap button:hover{opacity:0.9}

/* ============================================
   Hero Section
   ============================================ */
.tx-hero{position:relative;min-height:560px;display:flex;align-items:center;overflow:hidden;background:var(--tx-dark)}
.tx-hero-bg{position:absolute;inset:0;z-index:1}
.tx-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:0.45}
.tx-hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,13,26,0.3) 0%,rgba(13,13,26,0.85) 100%)}
.tx-hero-content{position:relative;z-index:2;text-align:center;width:100%;padding:80px 20px 60px}
.tx-hero h1{font-size:2.8rem;margin-bottom:16px;background:var(--tx-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.tx-hero h2{font-size:1.3rem;color:var(--tx-text2);font-weight:400;margin-bottom:32px}
.tx-hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:32px}
.tx-hero-tags span{padding:6px 18px;background:rgba(255,107,157,0.12);border:1px solid rgba(255,107,157,0.25);border-radius:20px;font-size:0.85rem;color:var(--tx-pink)}
.tx-hero-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.tx-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 32px;border-radius:28px;font-size:0.95rem;font-weight:600;transition:var(--tx-transition);cursor:pointer;border:none}
.tx-btn-primary{background:var(--tx-gradient);color:#fff;box-shadow:0 4px 20px rgba(255,107,157,0.3)}
.tx-btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(255,107,157,0.4);color:#fff}
.tx-btn-outline{background:transparent;color:var(--tx-pink);border:2px solid var(--tx-pink)}
.tx-btn-outline:hover{background:var(--tx-pink);color:#fff}

/* ============================================
   Section Common
   ============================================ */
.tx-section{padding:72px 0}
.tx-section-header{text-align:center;margin-bottom:48px}
.tx-section-header h2{font-size:2rem;margin-bottom:12px}
.tx-section-header h3{font-size:1.6rem;margin-bottom:10px}
.tx-section-header p{color:var(--tx-muted);font-size:1rem;max-width:640px;margin:0 auto}
.tx-section-header .tx-tag{display:inline-block;padding:4px 16px;background:rgba(255,107,157,0.1);color:var(--tx-pink);border-radius:16px;font-size:0.8rem;margin-bottom:12px;font-weight:600}
.tx-section-alt{background:var(--tx-card)}
.tx-section-dark{background:linear-gradient(180deg,var(--tx-dark) 0%,var(--tx-card) 100%)}

/* ============================================
   Video Card Grid
   ============================================ */
.tx-video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tx-video-card{background:var(--tx-card);border-radius:var(--tx-radius);overflow:hidden;transition:var(--tx-transition);border:1px solid var(--tx-border)}
.tx-video-card:hover{transform:translateY(-6px);box-shadow:var(--tx-shadow);border-color:rgba(255,107,157,0.3)}
.tx-video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.tx-video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:var(--tx-transition)}
.tx-video-card:hover .tx-video-thumb img{transform:scale(1.05)}
.tx-video-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.35);opacity:0;transition:var(--tx-transition)}
.tx-video-card:hover .tx-video-play{opacity:1}
.tx-video-play-icon{width:56px;height:56px;background:rgba(255,107,157,0.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:var(--tx-transition)}
.tx-video-play-icon::after{content:'';width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.tx-video-play-icon:hover{transform:scale(1.1);background:var(--tx-pink)}
.tx-video-duration{position:absolute;bottom:8px;right:8px;padding:2px 8px;background:rgba(0,0,0,0.75);color:#fff;font-size:0.75rem;border-radius:4px}
.tx-video-info{padding:14px 16px}
.tx-video-info h4{font-size:0.95rem;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}
.tx-video-meta{display:flex;align-items:center;gap:12px;color:var(--tx-muted);font-size:0.8rem}
.tx-video-meta span{display:flex;align-items:center;gap:4px}
.tx-video-stats{display:flex;gap:16px;margin-top:8px;color:var(--tx-muted);font-size:0.78rem}

/* ============================================
   Feature Modules Grid
   ============================================ */
.tx-features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-feature-card{background:var(--tx-card);border:1px solid var(--tx-border);border-radius:var(--tx-radius);padding:32px 24px;text-align:center;transition:var(--tx-transition)}
.tx-feature-card:hover{border-color:var(--tx-pink);transform:translateY(-4px);box-shadow:var(--tx-shadow)}
.tx-feature-icon{width:64px;height:64px;margin:0 auto 20px;background:rgba(255,107,157,0.1);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem}
.tx-feature-card h4{font-size:1.1rem;margin-bottom:10px}
.tx-feature-card p{color:var(--tx-muted);font-size:0.9rem;line-height:1.6}

/* ============================================
   Expert Cards
   ============================================ */
.tx-expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tx-expert-card{background:var(--tx-card);border:1px solid var(--tx-border);border-radius:var(--tx-radius);overflow:hidden;transition:var(--tx-transition);text-align:center}
.tx-expert-card:hover{border-color:var(--tx-pink);box-shadow:var(--tx-shadow)}
.tx-expert-avatar{width:100%;aspect-ratio:4/3;overflow:hidden}
.tx-expert-avatar img{width:100%;height:100%;object-fit:cover;transition:var(--tx-transition)}
.tx-expert-card:hover .tx-expert-avatar img{transform:scale(1.05)}
.tx-expert-info{padding:20px 16px}
.tx-expert-info h4{font-size:1.05rem;margin-bottom:4px}
.tx-expert-info .tx-role{color:var(--tx-pink);font-size:0.85rem;margin-bottom:8px}
.tx-expert-info p{color:var(--tx-muted);font-size:0.85rem;line-height:1.5;margin-bottom:12px}
.tx-expert-btns{display:flex;gap:8px;justify-content:center}
.tx-expert-btns a{padding:6px 16px;font-size:0.8rem;border-radius:16px}

/* ============================================
   Partners / Brand Wall
   ============================================ */
.tx-partners-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:32px;align-items:center}
.tx-partner-item{padding:16px 32px;background:var(--tx-card);border:1px solid var(--tx-border);border-radius:var(--tx-radius);font-size:1.1rem;font-weight:700;color:var(--tx-muted);transition:var(--tx-transition)}
.tx-partner-item:hover{border-color:var(--tx-pink);color:var(--tx-pink)}

/* ============================================
   FAQ Section
   ============================================ */
.tx-faq-list{max-width:800px;margin:0 auto}
.tx-faq-item{background:var(--tx-card);border:1px solid var(--tx-border);border-radius:var(--tx-radius);margin-bottom:12px;overflow:hidden;transition:var(--tx-transition)}
.tx-faq-item:hover{border-color:rgba(255,107,157,0.3)}
.tx-faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:0.95rem;color:var(--tx-text);transition:var(--tx-transition)}
.tx-faq-q:hover{color:var(--tx-pink)}
.tx-faq-q::after{content:'+';font-size:1.4rem;color:var(--tx-pink);transition:var(--tx-transition);flex-shrink:0;margin-left:16px}
.tx-faq-item.active .tx-faq-q::after{content:'-';transform:rotate(180deg)}
.tx-faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:max-height 0.35s ease,padding 0.35s ease;color:var(--tx-muted);font-size:0.9rem;line-height:1.7}
.tx-faq-item.active .tx-faq-a{max-height:300px;padding:0 24px 18px}

/* ============================================
   Reviews / Testimonials
   ============================================ */
.tx-reviews-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.tx-review-card{background:var(--tx-card);border:1px solid var(--tx-border);border-radius:var(--tx-radius);padding:28px;transition:var(--tx-transition)}
.tx-review-card:hover{border-color:rgba(255,107,157,0.3)}
.tx-review-stars{color:var(--tx-gold);font-size:1rem;margin-bottom:12px;letter-spacing:2px}
.tx-review-text{color:var(--tx-text2);font-size:0.92rem;line-height:1.7;margin-bottom:16px;font-style:italic}
.tx-review-author{display:flex;align-items:center;gap:12px}
.tx-review-author-avatar{width:40px;height:40px;border-radius:50%;background:var(--tx-gradient);display:flex;align-items:center;justify-content:center;font-size:0.9rem;font-weight:700;color:#fff;flex-shrink:0}
.tx-review-author-info{font-size:0.85rem}
.tx-review-author-info strong{color:var(--tx-text);display:block}
.tx-review-author-info span{color:var(--tx-muted)}

/* ============================================
   Contact Section
   ============================================ */
.tx-contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-contact-card{background:var(--tx-card);border:1px solid var(--tx-border);border-radius:var(--tx-radius);padding:28px;text-align:center;transition:var(--tx-transition)}
.tx-contact-card:hover{border-color:var(--tx-pink)}
.tx-contact-card h4{font-size:1.05rem;margin-bottom:12px}
.tx-contact-card p{color:var(--tx-muted);font-size:0.9rem;line-height:1.6}
.tx-contact-card img{max-width:160px;margin:12px auto 0;border-radius:8px}

/* ============================================
   How-To Guide
   ============================================ */
.tx-howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.tx-howto-step{background:var(--tx-card);border:1px solid var(--tx-border);border-radius:var(--tx-radius);padding:28px 20px;text-align:center;position:relative;counter-increment:step;transition:var(--tx-transition)}
.tx-howto-step:hover{border-color:var(--tx-pink);transform:translateY(-4px)}
.tx-howto-step::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:48px;height:48px;background:var(--tx-gradient);border-radius:50%;font-size:1.2rem;font-weight:800;color:#fff;margin:0 auto 16px}
.tx-howto-step h4{font-size:1rem;margin-bottom:8px}
.tx-howto-step p{color:var(--tx-muted);font-size:0.85rem;line-height:1.6}

/* ============================================
   Social Share
   ============================================ */
.tx-share-bar{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.tx-share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 20px;border-radius:20px;font-size:0.85rem;font-weight:600;transition:var(--tx-transition);border:1px solid var(--tx-border);color:var(--tx-text2);background:var(--tx-card)}
.tx-share-btn:hover{border-color:var(--tx-pink);color:var(--tx-pink);background:rgba(255,107,157,0.08)}

/* ============================================
   Footer
   ============================================ */
.tx-footer{background:var(--tx-card);border-top:1px solid var(--tx-border);padding:48px 0 0}
.tx-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.tx-footer-brand{display:flex;flex-direction:column;gap:12px}
.tx-footer-brand img{height:36px;width:auto}
.tx-footer-brand p{color:var(--tx-muted);font-size:0.88rem;line-height:1.6}
.tx-footer h5{font-size:0.95rem;color:var(--tx-text);margin-bottom:16px;font-weight:700}
.tx-footer-links a{display:block;color:var(--tx-muted);font-size:0.88rem;padding:4px 0;transition:var(--tx-transition)}
.tx-footer-links a:hover{color:var(--tx-pink)}
.tx-footer-qr{display:flex;gap:20px}
.tx-footer-qr-item{text-align:center}
.tx-footer-qr-item img{width:100px;height:100px;border-radius:8px;margin-bottom:6px}
.tx-footer-qr-item span{font-size:0.78rem;color:var(--tx-muted)}
.tx-footer-bottom{border-top:1px solid var(--tx-border);padding:20px 0;text-align:center;color:var(--tx-muted);font-size:0.82rem}
.tx-footer-bottom a{color:var(--tx-pink)}

/* ============================================
   Breadcrumb
   ============================================ */
.tx-breadcrumb{padding:16px 0;font-size:0.85rem;color:var(--tx-muted);margin-top:68px}
.tx-breadcrumb a{color:var(--tx-muted)}
.tx-breadcrumb a:hover{color:var(--tx-pink)}
.tx-breadcrumb span{margin:0 8px;color:var(--tx-border)}

/* ============================================
   Inner Page Content
   ============================================ */
.tx-page-hero{padding:40px 0;background:linear-gradient(135deg,var(--tx-card) 0%,var(--tx-dark) 100%);text-align:center}
.tx-page-hero h1{font-size:2.2rem;margin-bottom:12px}
.tx-page-hero p{color:var(--tx-muted);font-size:1rem}
.tx-content-area{padding:48px 0}
.tx-content-area article{max-width:900px;margin:0 auto}
.tx-content-area article p{margin-bottom:16px;line-height:1.8;color:var(--tx-text2)}
.tx-content-area article h2,.tx-content-area article h3{margin:32px 0 16px}

/* ============================================
   Lazy Load
   ============================================ */
.tx-lazy{opacity:0;transition:opacity 0.5s ease}
.tx-lazy.loaded{opacity:1}

/* ============================================
   Responsive Design
   ============================================ */
@media(max-width:1024px){
  .tx-video-grid{grid-template-columns:repeat(3,1fr)}
  .tx-expert-grid{grid-template-columns:repeat(2,1fr)}
  .tx-footer-grid{grid-template-columns:1fr 1fr}
  .tx-howto-steps{grid-template-columns:repeat(2,1fr)}
  .tx-contact-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .tx-nav{display:none;position:fixed;top:68px;left:0;right:0;background:rgba(13,13,26,0.98);flex-direction:column;padding:20px;gap:4px;border-bottom:1px solid var(--tx-border)}
  .tx-nav.open{display:flex}
  .tx-nav a{padding:12px 16px;width:100%;text-align:left}
  .tx-mobile-toggle{display:flex}
  .tx-hero h1{font-size:1.8rem}
  .tx-hero h2{font-size:1rem}
  .tx-video-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .tx-features-grid{grid-template-columns:1fr;gap:16px}
  .tx-expert-grid{grid-template-columns:1fr}
  .tx-reviews-grid{grid-template-columns:1fr}
  .tx-contact-grid{grid-template-columns:1fr}
  .tx-howto-steps{grid-template-columns:1fr}
  .tx-footer-grid{grid-template-columns:1fr;gap:24px}
  .tx-section{padding:48px 0}
  .tx-section-header h2{font-size:1.5rem}
  .tx-hero-content{padding:60px 16px 40px}
}
@media(max-width:480px){
  .tx-video-grid{grid-template-columns:1fr}
  .tx-hero-btns{flex-direction:column;align-items:center}
  .tx-btn{width:100%;justify-content:center}
  html{font-size:14px}
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.tx-animate{animation:fadeInUp 0.6s ease forwards;opacity:0}
.tx-animate-delay-1{animation-delay:0.1s}
.tx-animate-delay-2{animation-delay:0.2s}
.tx-animate-delay-3{animation-delay:0.3s}
.tx-animate-delay-4{animation-delay:0.4s}

/* ============================================
   Scrollbar
   ============================================ */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--tx-dark)}
::-webkit-scrollbar-thumb{background:var(--tx-border);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--tx-pink)}

/* ============================================
   Video Tag Badges
   ============================================ */
.tx-tag-badge{display:inline-block;padding:3px 10px;background:rgba(248,181,0,0.12);color:var(--tx-gold);border-radius:10px;font-size:0.75rem;font-weight:600;margin-right:6px}
.tx-tag-badge.pink{background:rgba(255,107,157,0.12);color:var(--tx-pink)}

/* ============================================
   Community Module
   ============================================ */
.tx-community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-community-card{background:var(--tx-card);border:1px solid var(--tx-border);border-radius:var(--tx-radius);padding:24px;transition:var(--tx-transition)}
.tx-community-card:hover{border-color:var(--tx-pink);transform:translateY(-3px)}
.tx-community-card h4{font-size:1rem;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.tx-community-card p{color:var(--tx-muted);font-size:0.88rem;line-height:1.6}

/* ============================================
   AI Module
   ============================================ */
.tx-ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-ai-card{background:linear-gradient(135deg,var(--tx-card) 0%,var(--tx-card2) 100%);border:1px solid var(--tx-border);border-radius:var(--tx-radius);padding:28px;transition:var(--tx-transition);position:relative;overflow:hidden}
.tx-ai-card::before{content:'';position:absolute;top:-50%;right:-50%;width:100%;height:100%;background:radial-gradient(circle,rgba(255,107,157,0.06) 0%,transparent 70%);transition:var(--tx-transition)}
.tx-ai-card:hover{border-color:var(--tx-pink);transform:translateY(-4px)}
.tx-ai-card h4{font-size:1.05rem;margin-bottom:10px;position:relative}
.tx-ai-card p{color:var(--tx-muted);font-size:0.88rem;line-height:1.6;position:relative}