/* ============================================================
   抖阴 原创样式表 - wgvsf22.cn
   配色：深靛蓝 #1B2A4A | 玫瑰金 #E8A87C | 薰衣草紫 #9B72CF
   ============================================================ */

/* === Reset & Base === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;color:#2D2D2D;background:#FAF7F2;line-height:1.7;overflow-x:hidden}
a{color:#1B2A4A;text-decoration:none;transition:color .3s}
a:hover{color:#E8A87C}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* === Top Navigation === */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:linear-gradient(135deg,#1B2A4A 0%,#2A3F6A 100%);box-shadow:0 2px 20px rgba(27,42,74,.3);transition:all .3s}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:68px}
.header-logo{display:flex;align-items:center;gap:10px}
.header-logo img{width:42px;height:42px;border-radius:8px}
.header-logo span{color:#fff;font-size:1.2rem;font-weight:700;letter-spacing:1px}
.main-nav{display:flex;gap:28px}
.main-nav a{color:rgba(255,255,255,.85);font-size:.95rem;font-weight:500;padding:6px 0;position:relative;transition:color .3s}
.main-nav a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:#E8A87C;transition:width .3s}
.main-nav a:hover,.main-nav a.active{color:#fff}
.main-nav a:hover::after,.main-nav a.active::after{width:100%}
.header-search{position:relative}
.header-search input{width:220px;height:38px;border:none;border-radius:19px;padding:0 40px 0 16px;font-size:.9rem;background:rgba(255,255,255,.15);color:#fff;outline:none;transition:all .3s}
.header-search input::placeholder{color:rgba(255,255,255,.5)}
.header-search input:focus{background:rgba(255,255,255,.25);width:260px}
.header-search button{position:absolute;right:4px;top:50%;transform:translateY(-50%);width:30px;height:30px;border:none;border-radius:50%;background:#E8A87C;color:#fff;cursor:pointer;font-size:.85rem;display:flex;align-items:center;justify-content:center}
.mobile-menu-btn{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* === Hero Section (Split Layout) === */
.hero-split{padding:120px 0 60px;background:linear-gradient(160deg,#FAF7F2 0%,#F0E8F5 50%,#FAF7F2 100%)}
.hero-split .container{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.hero-text h1{font-size:2.6rem;color:#1B2A4A;line-height:1.3;margin-bottom:16px}
.hero-text h1 em{font-style:normal;color:#E8A87C}
.hero-text .hero-subtitle{font-size:1.15rem;color:#555;margin-bottom:24px;line-height:1.8}
.hero-text .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.hero-text .hero-tags span{padding:6px 16px;border-radius:20px;font-size:.85rem;background:rgba(155,114,207,.12);color:#9B72CF;font-weight:500}
.hero-cta{display:flex;gap:14px}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:12px 30px;border-radius:25px;background:linear-gradient(135deg,#E8A87C,#D4896A);color:#fff;font-weight:600;font-size:1rem;border:none;cursor:pointer;transition:transform .3s,box-shadow .3s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(232,168,124,.4);color:#fff}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;padding:12px 30px;border-radius:25px;background:transparent;color:#1B2A4A;font-weight:600;font-size:1rem;border:2px solid #1B2A4A;cursor:pointer;transition:all .3s}
.btn-secondary:hover{background:#1B2A4A;color:#fff}
.hero-image{position:relative}
.hero-image img{border-radius:20px;box-shadow:0 20px 60px rgba(27,42,74,.15)}
.hero-image .hero-badge{position:absolute;bottom:-15px;left:30px;background:#fff;padding:12px 20px;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.1);display:flex;align-items:center;gap:10px}
.hero-badge .badge-dot{width:10px;height:10px;border-radius:50%;background:#4CAF50;animation:pulse 2s infinite}
.hero-badge span{font-size:.9rem;color:#1B2A4A;font-weight:600}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* === Section Common === */
.section-block{padding:70px 0}
.section-block:nth-child(even){background:#fff}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:2rem;color:#1B2A4A;margin-bottom:10px}
.section-title p{font-size:1rem;color:#777;max-width:600px;margin:0 auto}
.section-title .title-line{width:60px;height:3px;background:linear-gradient(90deg,#E8A87C,#9B72CF);margin:12px auto 0;border-radius:2px}

/* === Video Grid (Waterfall 3-col) === */
.video-waterfall{columns:3;column-gap:24px}
.video-card{break-inside:avoid;margin-bottom:24px;background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,.12)}
.video-thumb{position:relative;overflow:hidden}
.video-thumb img{width:100%;display:block;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;border-radius:50%;background:rgba(232,168,124,.9);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s,transform .3s}
.video-card:hover .video-play-btn{opacity:1}
.video-play-btn::after{content:'';width:0;height:0;border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:16px}
.video-info h3{font-size:1rem;color:#1B2A4A;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;gap:12px;font-size:.8rem;color:#999}
.video-meta span{display:flex;align-items:center;gap:4px}

/* === Category Cards (Horizontal Scroll) === */
.category-scroll{display:flex;gap:20px;overflow-x:auto;padding-bottom:16px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.category-scroll::-webkit-scrollbar{height:6px}
.category-scroll::-webkit-scrollbar-thumb{background:#E8A87C;border-radius:3px}
.category-card{flex:0 0 280px;scroll-snap-align:start;background:linear-gradient(145deg,#fff,#F8F4FF);border-radius:16px;padding:28px 24px;text-align:center;border:1px solid rgba(155,114,207,.1);transition:all .3s}
.category-card:hover{border-color:#9B72CF;box-shadow:0 8px 30px rgba(155,114,207,.15)}
.category-icon{width:64px;height:64px;border-radius:16px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;background:linear-gradient(135deg,#E8A87C,#9B72CF);color:#fff}
.category-card h3{font-size:1.1rem;color:#1B2A4A;margin-bottom:8px}
.category-card p{font-size:.88rem;color:#777;line-height:1.6}

/* === Expert Cards (Flip Effect) === */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.expert-card{text-align:center;background:#fff;border-radius:16px;padding:32px 20px;box-shadow:0 4px 20px rgba(0,0,0,.05);transition:all .4s}
.expert-card:hover{transform:translateY(-8px);box-shadow:0 16px 50px rgba(27,42,74,.12)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;overflow:hidden;border:3px solid #E8A87C;padding:3px}
.expert-avatar img{width:100%;height:100%;object-fit:cover;border-radius:50%}
.expert-card h4{font-size:1.05rem;color:#1B2A4A;margin-bottom:4px}
.expert-card .expert-role{font-size:.85rem;color:#9B72CF;margin-bottom:10px}
.expert-card p{font-size:.85rem;color:#777;line-height:1.5;margin-bottom:14px}
.expert-links{display:flex;justify-content:center;gap:10px}
.expert-links a{padding:6px 14px;border-radius:15px;font-size:.8rem;border:1px solid #E8A87C;color:#E8A87C;transition:all .3s}
.expert-links a:hover{background:#E8A87C;color:#fff}

/* === FAQ Accordion === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:12px;margin-bottom:14px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.04)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;cursor:pointer;font-weight:600;color:#1B2A4A;font-size:1rem;transition:background .3s}
.faq-question:hover{background:rgba(155,114,207,.05)}
.faq-question .faq-icon{font-size:1.2rem;color:#9B72CF;transition:transform .3s}
.faq-item.active .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease}
.faq-item.active .faq-answer{max-height:300px;padding:0 24px 18px}
.faq-answer p{font-size:.92rem;color:#666;line-height:1.7}

/* === Reviews (Staggered 2-col) === */
.review-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.review-card{background:#fff;border-radius:16px;padding:24px;box-shadow:0 4px 20px rgba(0,0,0,.05);transition:transform .3s}
.review-card:hover{transform:translateY(-4px)}
.review-card:nth-child(even){margin-top:30px}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#E8A87C,#9B72CF);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1rem}
.review-name{font-weight:600;color:#1B2A4A;font-size:.95rem}
.review-date{font-size:.8rem;color:#999}
.review-stars{color:#E8A87C;font-size:.9rem;margin-bottom:8px;letter-spacing:2px}
.review-card p{font-size:.9rem;color:#555;line-height:1.7}

/* === Partner Logo Wall === */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-wall .partner-item{width:140px;height:70px;background:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 12px rgba(0,0,0,.05);padding:10px;font-size:.9rem;color:#999;font-weight:600;transition:all .3s}
.partner-wall .partner-item:hover{box-shadow:0 6px 20px rgba(0,0,0,.1);transform:translateY(-3px)}

/* === How-To Steps === */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.howto-step{background:#fff;border-radius:16px;padding:28px 20px;text-align:center;position:relative;box-shadow:0 4px 20px rgba(0,0,0,.05)}
.howto-step::before{counter-increment:step;content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#9B72CF,#E8A87C);color:#fff;font-weight:700;font-size:.9rem;display:flex;align-items:center;justify-content:center}
.howto-step h4{font-size:1rem;color:#1B2A4A;margin:10px 0 8px}
.howto-step p{font-size:.88rem;color:#777;line-height:1.6}

/* === Contact Section === */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info{background:linear-gradient(145deg,#1B2A4A,#2A3F6A);border-radius:20px;padding:36px;color:#fff}
.contact-info h3{font-size:1.4rem;margin-bottom:20px}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:18px}
.contact-item .ci-icon{width:36px;height:36px;border-radius:10px;background:rgba(232,168,124,.2);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1rem}
.contact-item .ci-text{font-size:.92rem;line-height:1.6}
.contact-item .ci-text strong{display:block;margin-bottom:2px}
.contact-qr{display:flex;gap:20px;justify-content:center}
.contact-qr .qr-box{text-align:center}
.contact-qr .qr-box img{width:140px;height:140px;border-radius:10px;margin-bottom:8px}
.contact-qr .qr-box span{font-size:.85rem;color:#777}

/* === Footer === */
.site-footer{background:#111827;color:rgba(255,255,255,.7);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand img{width:36px;height:36px;border-radius:8px}
.footer-brand span{color:#fff;font-size:1.1rem;font-weight:700}
.footer-col p{font-size:.88rem;line-height:1.7;margin-bottom:16px}
.footer-col h4{color:#fff;font-size:1rem;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:#E8A87C}
.footer-col a{display:block;font-size:.88rem;color:rgba(255,255,255,.6);margin-bottom:10px;transition:color .3s}
.footer-col a:hover{color:#E8A87C}
.footer-social{display:flex;gap:12px;margin-top:12px}
.footer-social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:#fff;font-size:.9rem;transition:all .3s}
.footer-social a:hover{background:#E8A87C}
.footer-bottom{padding:20px 0;text-align:center;font-size:.82rem}
.footer-bottom .update-time{color:#E8A87C}

/* === Share Buttons === */
.share-bar{display:flex;justify-content:center;gap:12px;margin-top:20px}
.share-btn{padding:8px 18px;border-radius:20px;font-size:.85rem;color:#fff;display:flex;align-items:center;gap:6px;transition:opacity .3s}
.share-btn:hover{opacity:.85;color:#fff}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#111}
.share-bilibili{background:#00A1D6}

/* === Breadcrumb === */
.breadcrumb{padding:90px 0 20px;font-size:.88rem;color:#999}
.breadcrumb a{color:#1B2A4A}
.breadcrumb span{margin:0 8px;color:#ccc}

/* === Inner Page === */
.inner-hero{padding:100px 0 50px;background:linear-gradient(160deg,#1B2A4A 0%,#2A3F6A 60%,#9B72CF 100%);color:#fff;text-align:center}
.inner-hero h1{font-size:2.2rem;margin-bottom:12px}
.inner-hero p{font-size:1.05rem;opacity:.85;max-width:600px;margin:0 auto}
.inner-content{padding:50px 0}
.inner-content h2{font-size:1.6rem;color:#1B2A4A;margin:30px 0 16px}
.inner-content h3{font-size:1.3rem;color:#1B2A4A;margin:24px 0 12px}
.inner-content p{font-size:.95rem;color:#555;line-height:1.8;margin-bottom:16px}

/* === Video Modal === */
.video-modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.85);z-index:2000;align-items:center;justify-content:center}
.video-modal.active{display:flex}
.video-modal-content{background:#000;border-radius:16px;overflow:hidden;max-width:800px;width:90%;position:relative}
.video-modal-close{position:absolute;top:-40px;right:0;color:#fff;font-size:1.5rem;cursor:pointer;background:none;border:none}
.video-modal-content .modal-placeholder{width:100%;aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;background:linear-gradient(135deg,#1B2A4A,#9B72CF)}

/* === Jammer (Hidden) === */
.jammer{display:none!important}

/* === Responsive === */
@media(max-width:1024px){
  .hero-split .container{grid-template-columns:1fr}
  .hero-image{order:-1;max-width:500px;margin:0 auto}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .video-waterfall{columns:2}
}
@media(max-width:768px){
  .main-nav{display:none}
  .mobile-menu-btn{display:block}
  .main-nav.open{display:flex;flex-direction:column;position:absolute;top:68px;left:0;width:100%;background:#1B2A4A;padding:20px;gap:0}
  .main-nav.open a{padding:12px 20px;border-bottom:1px solid rgba(255,255,255,.1)}
  .header-search{display:none}
  .hero-text h1{font-size:1.8rem}
  .video-waterfall{columns:1}
  .review-grid{grid-template-columns:1fr}
  .review-card:nth-child(even){margin-top:0}
  .contact-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .category-card{flex:0 0 240px}
}