/* ============================================
   四虎视频 - 原创样式表
   配色：鬼灭之刃暗色系 红紫渐变
   域名：xhxdv325.cn
   ============================================ */

/* === 基础重置 === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB',sans-serif;background:#0a0a14;color:#e8e6f0;line-height:1.7;overflow-x:hidden}
a{color:#ff6b6b;text-decoration:none;transition:color .3s}
a:hover{color:#ff9a56}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* === 顶部导航 === */
.top-bar{background:linear-gradient(135deg,#120820 0%,#1a0a2e 100%);border-bottom:1px solid rgba(230,57,70,.2);position:sticky;top:0;z-index:1000;backdrop-filter:blur(12px)}
.top-bar .container{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand-logo{display:flex;align-items:center;gap:10px}
.brand-logo img{height:42px;width:auto}
.brand-logo span{font-size:1.3rem;font-weight:700;background:linear-gradient(135deg,#E63946,#ff6b35);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.main-menu{display:flex;gap:6px}
.main-menu a{padding:8px 14px;border-radius:6px;font-size:.9rem;color:#c8c4d4;transition:all .3s}
.main-menu a:hover,.main-menu a.current{background:rgba(230,57,70,.15);color:#ff6b6b}
.menu-toggle{display:none;background:none;border:none;color:#e8e6f0;font-size:1.5rem;cursor:pointer}

/* === Hero Banner === */
.hero-banner{position:relative;height:520px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.hero-banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.55)}
.hero-overlay{position:relative;z-index:2;text-align:center;padding:0 20px}
.hero-overlay h1{font-size:2.8rem;font-weight:800;margin-bottom:12px;text-shadow:0 2px 20px rgba(0,0,0,.7)}
.hero-overlay h1 em{font-style:normal;background:linear-gradient(135deg,#E63946,#ff6b35);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-overlay p{font-size:1.15rem;color:#d0cce0;max-width:640px;margin:0 auto 24px;text-shadow:0 1px 8px rgba(0,0,0,.6)}
.hero-btn{display:inline-block;padding:12px 36px;background:linear-gradient(135deg,#E63946,#9B2335);color:#fff;border-radius:30px;font-weight:600;font-size:1rem;transition:transform .3s,box-shadow .3s}
.hero-btn:hover{transform:translateY(-3px);box-shadow:0 8px 25px rgba(230,57,70,.4);color:#fff}

/* === 通用区块 === */
.section-block{padding:60px 0}
.section-block:nth-child(even){background:rgba(18,8,32,.6)}
.section-head{text-align:center;margin-bottom:40px}
.section-head h2{font-size:1.9rem;font-weight:700;margin-bottom:8px}
.section-head h2 span{background:linear-gradient(135deg,#E63946,#ff6b35);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-head p{color:#9992a8;font-size:1rem;max-width:600px;margin:0 auto}

/* === 动漫视频卡片网格 === */
.anime-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.anime-card{position:relative;border-radius:12px;overflow:hidden;background:#16102a;border:1px solid rgba(230,57,70,.1);transition:transform .35s,box-shadow .35s;cursor:pointer}
.anime-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(230,57,70,.2)}
.anime-card .thumb{position:relative;aspect-ratio:3/4;overflow:hidden}
.anime-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.anime-card:hover .thumb img{transform:scale(1.08)}
.anime-card .play-icon{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(10,10,20,.5);opacity:0;transition:opacity .35s}
.anime-card:hover .play-icon{opacity:1}
.anime-card .play-icon svg{width:56px;height:56px;fill:#E63946;filter:drop-shadow(0 2px 8px rgba(230,57,70,.5))}
.anime-card .card-info{padding:14px}
.anime-card .card-info h3{font-size:.95rem;font-weight:600;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.anime-card .card-info .meta{font-size:.8rem;color:#8a8498;display:flex;gap:10px}

/* === 服务模块 === */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-item{background:linear-gradient(145deg,#16102a,#1e1438);border:1px solid rgba(230,57,70,.08);border-radius:14px;padding:30px 24px;text-align:center;transition:transform .3s,border-color .3s}
.service-item:hover{transform:translateY(-4px);border-color:rgba(230,57,70,.3)}
.service-item .icon-wrap{width:64px;height:64px;margin:0 auto 16px;border-radius:50%;background:linear-gradient(135deg,rgba(230,57,70,.15),rgba(155,35,53,.15));display:flex;align-items:center;justify-content:center;font-size:1.8rem}
.service-item h3{font-size:1.05rem;font-weight:600;margin-bottom:8px}
.service-item p{font-size:.88rem;color:#9992a8;line-height:1.6}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#16102a;border:1px solid rgba(230,57,70,.08);border-radius:14px;overflow:hidden;text-align:center;transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card .avatar{width:100%;aspect-ratio:1;overflow:hidden}
.expert-card .avatar img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.expert-card:hover .avatar img{transform:scale(1.05)}
.expert-card .info{padding:16px}
.expert-card .info h4{font-size:1rem;font-weight:600;margin-bottom:4px}
.expert-card .info .role{font-size:.82rem;color:#E63946;margin-bottom:6px}
.expert-card .info p{font-size:.82rem;color:#9992a8;line-height:1.5}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid rgba(230,57,70,.1);border-radius:10px;margin-bottom:12px;overflow:hidden;background:#16102a}
.faq-item summary{padding:16px 20px;cursor:pointer;font-weight:600;font-size:.95rem;display:flex;align-items:center;justify-content:space-between;transition:background .3s}
.faq-item summary:hover{background:rgba(230,57,70,.05)}
.faq-item summary::after{content:'+';font-size:1.3rem;color:#E63946;transition:transform .3s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 20px 16px;font-size:.9rem;color:#9992a8;line-height:1.7}

/* === 用户评价 === */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{background:#16102a;border:1px solid rgba(230,57,70,.08);border-radius:12px;padding:24px;transition:transform .3s}
.review-card:hover{transform:translateY(-3px)}
.review-card .stars{color:#ff6b35;margin-bottom:10px;font-size:1rem}
.review-card blockquote{font-size:.9rem;color:#c8c4d4;line-height:1.6;margin-bottom:12px;font-style:italic}
.review-card .reviewer{font-size:.82rem;color:#8a8498;font-weight:600}

/* === How-To === */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step-card{background:#16102a;border:1px solid rgba(230,57,70,.08);border-radius:12px;padding:28px 20px;text-align:center;position:relative;counter-increment:step}
.step-card::before{content:counter(step);display:block;width:40px;height:40px;line-height:40px;border-radius:50%;background:linear-gradient(135deg,#E63946,#9B2335);color:#fff;font-weight:700;font-size:1.1rem;margin:0 auto 14px;text-align:center}
.step-card h4{font-size:.95rem;font-weight:600;margin-bottom:8px}
.step-card p{font-size:.85rem;color:#9992a8}

/* === 联系我们 === */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info h3{font-size:1.2rem;margin-bottom:16px}
.contact-info p{font-size:.9rem;color:#9992a8;margin-bottom:10px;line-height:1.6}
.contact-info .qr-row{display:flex;gap:20px;margin-top:16px}
.contact-info .qr-row img{width:140px;border-radius:8px}
.contact-form{display:flex;flex-direction:column;gap:14px}
.contact-form input,.contact-form textarea{background:#16102a;border:1px solid rgba(230,57,70,.15);border-radius:8px;padding:12px 16px;color:#e8e6f0;font-size:.9rem;transition:border-color .3s}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:#E63946}
.contact-form textarea{min-height:120px;resize:vertical}
.contact-form button{padding:12px 32px;background:linear-gradient(135deg,#E63946,#9B2335);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:transform .3s,box-shadow .3s}
.contact-form button:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(230,57,70,.3)}

/* === 页脚 === */
.site-footer{background:linear-gradient(180deg,#0a0a14,#06060e);border-top:1px solid rgba(230,57,70,.1);padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-col h4{font-size:1rem;font-weight:600;margin-bottom:14px;color:#ff6b6b}
.footer-col p,.footer-col a{font-size:.85rem;color:#8a8498;display:block;margin-bottom:6px;transition:color .3s}
.footer-col a:hover{color:#ff9a56}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(230,57,70,.08);font-size:.82rem;color:#6a6480}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#8a8498}
.breadcrumb a{color:#ff6b6b}
.breadcrumb span{margin:0 6px;color:#6a6480}

/* === 内页Hero === */
.page-hero{height:320px;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}
.page-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.4)}
.page-hero .overlay{position:relative;z-index:2;text-align:center}
.page-hero h1{font-size:2.2rem;font-weight:800;text-shadow:0 2px 15px rgba(0,0,0,.6)}
.page-hero p{color:#d0cce0;margin-top:8px;font-size:1rem}

/* === 品牌墙 === */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.brand-wall span{font-size:1.1rem;color:#6a6480;font-weight:600;padding:10px 20px;border:1px solid rgba(230,57,70,.1);border-radius:8px;transition:all .3s}
.brand-wall span:hover{color:#ff6b6b;border-color:rgba(230,57,70,.3)}

/* === 响应式 === */
@media(max-width:1024px){
  .anime-grid{grid-template-columns:repeat(3,1fr)}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .main-menu{display:none;position:absolute;top:68px;left:0;right:0;background:#120820;flex-direction:column;padding:16px;border-bottom:1px solid rgba(230,57,70,.2)}
  .main-menu.active{display:flex}
  .menu-toggle{display:block}
  .hero-banner{height:400px}
  .hero-overlay h1{font-size:1.8rem}
  .anime-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .contact-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section-head h2{font-size:1.5rem}
}
@media(max-width:480px){
  .anime-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .howto-steps{grid-template-columns:1fr}
}