/* ========================================
   糖心vlog - 原创样式表
   色彩方案：甜蜜粉紫渐变主题
   ======================================== */

/* --- Reset & Base --- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;background:#0F0A18;color:#E8DFF5;line-height:1.7;overflow-x:hidden}
a{color:#FF8FA3;text-decoration:none;transition:color .3s}
a:hover{color:#E8456B}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:#F5F0FF}

/* --- Layout --- */
.tx-wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.tx-section{padding:70px 0}
.tx-section:nth-child(even){background:linear-gradient(180deg,#0F0A18 0%,#1A1028 50%,#0F0A18 100%)}

/* --- Header & Nav --- */
.tx-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(15,10,24,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(232,69,107,.15);transition:all .3s}
.tx-header .tx-wrap{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 span{font-size:1.3rem;font-weight:800;background:linear-gradient(135deg,#E8456B,#6C3CE0);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.tx-nav{display:flex;align-items:center;gap:28px}
.tx-nav a{color:#B8A9CC;font-size:.95rem;font-weight:500;position:relative;padding:4px 0}
.tx-nav a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:linear-gradient(90deg,#E8456B,#6C3CE0);transition:width .3s}
.tx-nav a:hover,.tx-nav a.active{color:#F5F0FF}
.tx-nav a:hover::after,.tx-nav a.active::after{width:100%}
.tx-menu-btn{display:none;background:none;border:none;color:#F5F0FF;font-size:1.5rem;cursor:pointer}

/* --- Search Bar --- */
.tx-search{background:rgba(26,16,40,.8);border-bottom:1px solid rgba(108,60,224,.2);padding:12px 0}
.tx-search-inner{display:flex;align-items:center;max-width:680px;margin:0 auto;position:relative}
.tx-search input{width:100%;padding:10px 48px 10px 20px;border-radius:24px;border:1px solid rgba(232,69,107,.3);background:rgba(36,21,56,.9);color:#F5F0FF;font-size:.95rem;outline:none;transition:border-color .3s}
.tx-search input:focus{border-color:#E8456B}
.tx-search input::placeholder{color:#7A6B8A}
.tx-search button{position:absolute;right:6px;top:50%;transform:translateY(-50%);background:linear-gradient(135deg,#E8456B,#6C3CE0);border:none;color:#fff;width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center}

/* --- Hero Banner --- */
.tx-hero{position:relative;min-height:520px;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;margin-top:68px}
.tx-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.35)}
.tx-hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,10,24,.4) 0%,rgba(15,10,24,.85) 100%)}
.tx-hero-content{position:relative;z-index:2;padding:40px 20px}
.tx-hero h1{font-size:2.8rem;margin-bottom:16px;background:linear-gradient(135deg,#FF8FA3,#E8456B,#6C3CE0);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.tx-hero h2{font-size:1.3rem;color:#B8A9CC;font-weight:400;margin-bottom:28px;max-width:600px;margin-left:auto;margin-right:auto}
.tx-hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:24px}
.tx-hero-tags span{background:rgba(232,69,107,.15);border:1px solid rgba(232,69,107,.3);color:#FF8FA3;padding:6px 16px;border-radius:20px;font-size:.85rem}
.tx-btn-primary{display:inline-block;padding:12px 36px;background:linear-gradient(135deg,#E8456B,#6C3CE0);color:#fff;border-radius:28px;font-weight:600;font-size:1rem;transition:transform .3s,box-shadow .3s;border:none;cursor:pointer}
.tx-btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(232,69,107,.4);color:#fff}
.tx-btn-outline{display:inline-block;padding:10px 28px;border:2px solid #E8456B;color:#E8456B;border-radius:28px;font-weight:600;font-size:.95rem;transition:all .3s;margin-left:12px}
.tx-btn-outline:hover{background:#E8456B;color:#fff}

/* --- Section Titles --- */
.tx-stitle{text-align:center;margin-bottom:48px}
.tx-stitle h2{font-size:2rem;margin-bottom:10px}
.tx-stitle h2 em{font-style:normal;color:#E8456B}
.tx-stitle p{color:#8A7BA0;font-size:1rem;max-width:560px;margin:0 auto}
.tx-stitle .tx-line{width:60px;height:3px;background:linear-gradient(90deg,#E8456B,#6C3CE0);margin:12px auto 0;border-radius:2px}

/* --- Video Cards Grid --- */
.tx-vgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tx-vcard{background:#1A1028;border-radius:14px;overflow:hidden;transition:transform .3s,box-shadow .3s;position:relative}
.tx-vcard:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(232,69,107,.2)}
.tx-vcard-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.tx-vcard-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.tx-vcard:hover .tx-vcard-thumb img{transform:scale(1.06)}
.tx-vcard-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;background:rgba(15,10,24,.5)}
.tx-vcard:hover .tx-vcard-play{opacity:1}
.tx-vcard-play span{width:52px;height:52px;background:rgba(232,69,107,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:#fff;box-shadow:0 4px 20px rgba(232,69,107,.5)}
.tx-vcard-info{padding:14px 16px}
.tx-vcard-info h3{font-size:.95rem;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tx-vcard-meta{display:flex;align-items:center;gap:12px;color:#7A6B8A;font-size:.8rem}
.tx-vcard-meta span{display:flex;align-items:center;gap:4px}
.tx-vcard-tag{position:absolute;top:10px;left:10px;background:rgba(232,69,107,.85);color:#fff;padding:3px 10px;border-radius:4px;font-size:.75rem;z-index:3}

/* --- Feature Blocks --- */
.tx-features{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-fcard{background:linear-gradient(145deg,#1A1028,#241538);border:1px solid rgba(108,60,224,.15);border-radius:16px;padding:32px 24px;text-align:center;transition:transform .3s,border-color .3s}
.tx-fcard:hover{transform:translateY(-4px);border-color:rgba(232,69,107,.4)}
.tx-fcard-icon{width:64px;height:64px;margin:0 auto 18px;background:linear-gradient(135deg,rgba(232,69,107,.2),rgba(108,60,224,.2));border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem}
.tx-fcard h3{font-size:1.1rem;margin-bottom:10px}
.tx-fcard p{color:#8A7BA0;font-size:.9rem;line-height:1.6}

/* --- Expert Team --- */
.tx-experts{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tx-expert{background:#1A1028;border-radius:16px;overflow:hidden;text-align:center;padding-bottom:20px;transition:transform .3s}
.tx-expert:hover{transform:translateY(-4px)}
.tx-expert-img{width:120px;height:120px;border-radius:50%;margin:24px auto 14px;overflow:hidden;border:3px solid rgba(232,69,107,.4)}
.tx-expert-img img{width:100%;height:100%;object-fit:cover}
.tx-expert h4{font-size:1rem;margin-bottom:4px}
.tx-expert .tx-role{color:#E8456B;font-size:.85rem;margin-bottom:8px}
.tx-expert p{color:#8A7BA0;font-size:.82rem;padding:0 16px;margin-bottom:12px}
.tx-expert-links{display:flex;gap:8px;justify-content:center}
.tx-expert-links a{padding:6px 14px;border-radius:16px;font-size:.8rem;border:1px solid rgba(232,69,107,.3);color:#FF8FA3;transition:all .3s}
.tx-expert-links a:hover{background:#E8456B;color:#fff;border-color:#E8456B}

/* --- Brand Wall --- */
.tx-brands{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.tx-brands .tx-brand-item{background:rgba(26,16,40,.8);border:1px solid rgba(108,60,224,.15);border-radius:12px;padding:18px 28px;color:#8A7BA0;font-size:.95rem;font-weight:600;transition:all .3s}
.tx-brands .tx-brand-item:hover{border-color:#E8456B;color:#E8456B}

/* --- Reviews --- */
.tx-reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tx-review{background:linear-gradient(145deg,#1A1028,#1E1430);border:1px solid rgba(108,60,224,.12);border-radius:14px;padding:24px;position:relative}
.tx-review::before{content:'\201C';position:absolute;top:12px;left:18px;font-size:3rem;color:rgba(232,69,107,.2);font-family:Georgia,serif}
.tx-review p{color:#B8A9CC;font-size:.9rem;margin-bottom:14px;padding-top:16px;line-height:1.7}
.tx-review-author{display:flex;align-items:center;gap:10px}
.tx-review-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#E8456B,#6C3CE0);display:flex;align-items:center;justify-content:center;color:#fff;font-size:.85rem;font-weight:700}
.tx-review-name{font-size:.85rem;color:#F5F0FF}
.tx-review-stars{color:#FFB800;font-size:.8rem;margin-top:2px}

/* --- FAQ --- */
.tx-faq-list{max-width:800px;margin:0 auto}
.tx-faq-item{border-bottom:1px solid rgba(108,60,224,.15);padding:18px 0}
.tx-faq-q{font-size:1rem;font-weight:600;color:#F5F0FF;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px}
.tx-faq-q::after{content:'+';font-size:1.4rem;color:#E8456B;transition:transform .3s;flex-shrink:0}
.tx-faq-item.open .tx-faq-q::after{transform:rotate(45deg)}
.tx-faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;color:#8A7BA0;font-size:.9rem;line-height:1.7}
.tx-faq-item.open .tx-faq-a{max-height:300px;padding-top:12px}

/* --- Contact --- */
.tx-contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.tx-contact-info h3{font-size:1.2rem;margin-bottom:16px;color:#E8456B}
.tx-contact-info p{color:#B8A9CC;font-size:.9rem;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.tx-contact-qr{display:flex;gap:24px;margin-top:20px}
.tx-contact-qr div{text-align:center}
.tx-contact-qr img{width:140px;height:140px;border-radius:8px;border:2px solid rgba(232,69,107,.3)}
.tx-contact-qr p{font-size:.82rem;color:#8A7BA0;margin-top:8px}

/* --- How To Join --- */
.tx-howto{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tx-howto-step{text-align:center;padding:24px 16px}
.tx-howto-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#E8456B,#6C3CE0);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;margin:0 auto 14px}
.tx-howto-step h4{font-size:.95rem;margin-bottom:8px}
.tx-howto-step p{color:#8A7BA0;font-size:.85rem}

/* --- Social Share --- */
.tx-share{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.tx-share a{width:42px;height:42px;border-radius:50%;background:rgba(26,16,40,.8);border:1px solid rgba(108,60,224,.2);display:flex;align-items:center;justify-content:center;color:#B8A9CC;font-size:.9rem;transition:all .3s}
.tx-share a:hover{background:#E8456B;color:#fff;border-color:#E8456B}

/* --- Footer --- */
.tx-footer{background:#0A0612;border-top:1px solid rgba(108,60,224,.15);padding:40px 0 20px}
.tx-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.tx-footer-brand .tx-logo{margin-bottom:12px}
.tx-footer-brand p{color:#7A6B8A;font-size:.85rem;line-height:1.6}
.tx-footer h5{font-size:.95rem;margin-bottom:14px;color:#F5F0FF}
.tx-footer ul li{margin-bottom:8px}
.tx-footer ul li a{color:#7A6B8A;font-size:.85rem}
.tx-footer ul li a:hover{color:#E8456B}
.tx-footer-bottom{border-top:1px solid rgba(108,60,224,.1);padding-top:18px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.tx-footer-bottom p{color:#5A4D6E;font-size:.82rem}
.tx-footer-bottom .tx-update{color:#7A6B8A}

/* --- Animations --- */
.tx-fadein{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.tx-fadein.visible{opacity:1;transform:translateY(0)}

/* --- Community Section --- */
.tx-community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tx-community-card{background:#1A1028;border-radius:14px;overflow:hidden;transition:transform .3s}
.tx-community-card:hover{transform:translateY(-4px)}
.tx-community-card img{width:100%;height:180px;object-fit:cover}
.tx-community-card-body{padding:16px}
.tx-community-card-body h4{font-size:1rem;margin-bottom:6px}
.tx-community-card-body p{color:#8A7BA0;font-size:.85rem}

/* --- AI Section --- */
.tx-ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-ai-card{background:linear-gradient(145deg,rgba(108,60,224,.08),rgba(232,69,107,.05));border:1px solid rgba(108,60,224,.18);border-radius:16px;padding:28px 22px;transition:all .3s}
.tx-ai-card:hover{border-color:rgba(232,69,107,.4);transform:translateY(-4px)}
.tx-ai-card h4{font-size:1.05rem;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.tx-ai-card h4 span{font-size:1.3rem}
.tx-ai-card p{color:#8A7BA0;font-size:.88rem;line-height:1.6}
.tx-ai-card .tx-stat{margin-top:12px;display:flex;gap:16px}
.tx-ai-card .tx-stat span{font-size:.8rem;color:#E8456B}

/* --- Breadcrumb --- */
.tx-breadcrumb{padding:14px 0;font-size:.85rem;color:#7A6B8A;margin-top:68px}
.tx-breadcrumb a{color:#8A7BA0}
.tx-breadcrumb a:hover{color:#E8456B}

/* --- Inner Page Content --- */
.tx-page-hero{padding:60px 0 40px;text-align:center;background:linear-gradient(180deg,#1A1028,#0F0A18);margin-top:68px}
.tx-page-hero h1{font-size:2.2rem;margin-bottom:12px}
.tx-page-hero p{color:#8A7BA0;max-width:600px;margin:0 auto}
.tx-content{padding:40px 0}
.tx-content p{color:#B8A9CC;font-size:.95rem;line-height:1.8;margin-bottom:16px}
.tx-content h2{font-size:1.6rem;margin:32px 0 16px;color:#F5F0FF}
.tx-content h3{font-size:1.3rem;margin:24px 0 12px;color:#E8456B}

/* --- Responsive --- */
@media(max-width:1024px){
  .tx-vgrid{grid-template-columns:repeat(3,1fr)}
  .tx-experts{grid-template-columns:repeat(2,1fr)}
  .tx-footer-grid{grid-template-columns:1fr 1fr}
  .tx-howto{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .tx-nav{display:none;position:absolute;top:68px;left:0;width:100%;background:rgba(15,10,24,.98);flex-direction:column;padding:20px;gap:16px;border-bottom:1px solid rgba(232,69,107,.2)}
  .tx-nav.open{display:flex}
  .tx-menu-btn{display:block}
  .tx-hero h1{font-size:2rem}
  .tx-vgrid{grid-template-columns:repeat(2,1fr)}
  .tx-features{grid-template-columns:1fr}
  .tx-reviews{grid-template-columns:1fr}
  .tx-contact-grid{grid-template-columns:1fr}
  .tx-ai-grid{grid-template-columns:1fr}
  .tx-community-grid{grid-template-columns:1fr}
  .tx-footer-grid{grid-template-columns:1fr}
  .tx-howto{grid-template-columns:1fr}
  .tx-experts{grid-template-columns:1fr}
}
@media(max-width:480px){
  .tx-vgrid{grid-template-columns:1fr}
  .tx-hero{min-height:400px}
  .tx-hero h1{font-size:1.6rem}
}