/* ============================================
   黄色仓库 - 主样式文件
   Brand: 黄色仓库 | Domain: ca9kcy.cn
   原创设计 · 原创布局 · 原创色彩
   ============================================ */

/* ---------- CSS变量 ---------- */
:root {
  --primary: #E84C89;
  --primary-dark: #C73570;
  --primary-light: #FF6BAD;
  --accent: #FF9F43;
  --accent2: #F368E0;
  --bg: #FDF5F9;
  --bg2: #FFF0F7;
  --bg-dark: #1A0A12;
  --text: #2D1B24;
  --text-muted: #7A5566;
  --border: #F0D0E0;
  --white: #FFFFFF;
  --shadow: 0 4px 20px rgba(232,76,137,0.12);
  --shadow-hover: 0 8px 32px rgba(232,76,137,0.22);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --transition: 0.28s cubic-bezier(0.4,0,0.2,1);
}

/* ---------- 重置 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:#f1e0ea}
::-webkit-scrollbar-thumb{background:var(--primary);border-radius:3px}

/* ---------- 通用 ---------- */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section-alt{background:var(--bg2)}
.section-dark{background:var(--bg-dark);color:var(--white)}
.section-title{font-size:2rem;font-weight:700;text-align:center;margin-bottom:12px;color:var(--text)}
.section-title span{color:var(--primary)}
.section-desc{text-align:center;color:var(--text-muted);max-width:600px;margin:0 auto 48px;font-size:1.05rem}
.section-dark .section-title{color:var(--white)}
.section-dark .section-desc{color:rgba(255,255,255,0.7)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:50px;font-size:0.95rem;font-weight:600;transition:all var(--transition);cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;box-shadow:0 4px 15px rgba(232,76,137,0.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(232,76,137,0.45);color:#fff}
.btn-outline{border:2px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-white{background:#fff;color:var(--primary);box-shadow:0 4px 15px rgba(0,0,0,0.1)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,0,0,0.15)}
.tag{display:inline-block;padding:4px 12px;border-radius:50px;font-size:0.78rem;font-weight:600;background:rgba(232,76,137,0.1);color:var(--primary)}
.badge{display:inline-block;padding:3px 10px;border-radius:50px;font-size:0.72rem;font-weight:700;background:var(--primary);color:#fff}

/* ---------- 顶部公告栏 ---------- */
.notice-bar{background:linear-gradient(90deg,var(--primary),var(--accent2),var(--primary-light));color:#fff;text-align:center;padding:9px 20px;font-size:0.88rem;font-weight:500;position:relative;overflow:hidden}
.notice-bar::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.15),transparent);animation:shimmer 3s infinite}
@keyframes shimmer{to{left:100%}}

/* ---------- 头部导航 ---------- */
#site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,0.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);box-shadow:0 2px 20px rgba(232,76,137,0.08)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}
.logo-wrap{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-img{width:40px;height:40px;border-radius:10px;object-fit:cover}
.logo-text-wrap{display:flex;flex-direction:column;line-height:1.2}
.logo-name{font-size:1.2rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.logo-sub{font-size:0.7rem;color:var(--text-muted)}
#main-nav{flex:1;display:flex;align-items:center;justify-content:center;gap:4px}
#main-nav a{padding:8px 14px;border-radius:8px;font-size:0.9rem;font-weight:500;color:var(--text-muted);transition:all var(--transition);white-space:nowrap}
#main-nav a:hover,#main-nav a.active{color:var(--primary);background:rgba(232,76,137,0.08)}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.header-search-wrap{position:relative}
#search-form{display:flex;align-items:center;background:var(--bg2);border:1.5px solid var(--border);border-radius:50px;overflow:hidden;transition:border-color var(--transition)}
#search-form:focus-within{border-color:var(--primary)}
#search-input{border:none;background:transparent;padding:8px 16px;font-size:0.88rem;width:180px;outline:none;color:var(--text)}
.search-btn{padding:8px 14px;background:var(--primary);color:#fff;border-radius:0 50px 50px 0;font-size:0.85rem;transition:background var(--transition)}
.search-btn:hover{background:var(--primary-dark)}
#menu-toggle{display:none;flex-direction:column;gap:5px;padding:8px;border-radius:8px}
#menu-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:all var(--transition);display:block}

/* ---------- Hero Banner ---------- */
.hero{position:relative;min-height:580px;display:flex;align-items:center;overflow:hidden;background:linear-gradient(135deg,#1A0A12 0%,#2D0A1E 50%,#1A0A12 100%)}
.hero-bg{position:absolute;inset:0;object-fit:cover;width:100%;height:100%;opacity:0.35}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,10,18,0.85) 0%,rgba(232,76,137,0.2) 100%)}
.hero-content{position:relative;z-index:2;max-width:620px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(232,76,137,0.2);border:1px solid rgba(232,76,137,0.4);color:#FFB3D1;padding:6px 16px;border-radius:50px;font-size:0.82rem;font-weight:600;margin-bottom:20px}
.hero-badge::before{content:'🎬'}
.hero h1{font-size:3rem;font-weight:900;color:#fff;line-height:1.2;margin-bottom:16px}
.hero h1 em{font-style:normal;color:var(--primary-light)}
.hero-desc{color:rgba(255,255,255,0.75);font-size:1.05rem;margin-bottom:32px;line-height:1.8}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{position:relative;z-index:2;display:flex;gap:40px;margin-top:56px}
.hero-stat{text-align:center}
.hero-stat .num{font-size:1.8rem;font-weight:800;color:var(--primary-light)}
.hero-stat .label{font-size:0.8rem;color:rgba(255,255,255,0.6);margin-top:2px}

/* ---------- 视频卡片 ---------- */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px}
.video-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#1a0a12}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition);background:rgba(0,0,0,0.35)}
.video-card:hover .play-btn{opacity:1}
.play-icon{width:56px;height:56px;background:rgba(232,76,137,0.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transform:scale(0.8);transition:transform var(--transition)}
.video-card:hover .play-icon{transform:scale(1)}
.play-icon::after{content:'';border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}
.video-info{padding:14px 16px}
.video-title{font-size:0.95rem;font-weight:600;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--text)}
.video-meta{display:flex;align-items:center;gap:12px;font-size:0.78rem;color:var(--text-muted)}
.video-meta .views::before{content:'▶ '}
.video-meta .likes::before{content:'♥ '}
.video-meta .comments::before{content:'💬 '}
.video-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,0.75);color:#fff;font-size:0.72rem;padding:2px 8px;border-radius:4px}

/* ---------- 分类标签栏 ---------- */
.cat-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px;justify-content:center}
.cat-tab{padding:8px 20px;border-radius:50px;font-size:0.88rem;font-weight:600;border:1.5px solid var(--border);color:var(--text-muted);cursor:pointer;transition:all var(--transition)}
.cat-tab:hover,.cat-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------- 功能模块卡片 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.feature-card{background:#fff;border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);transition:all var(--transition);border:1px solid var(--border);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent2))}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feature-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,rgba(232,76,137,0.12),rgba(243,104,224,0.12));display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:16px}
.feature-title{font-size:1.05rem;font-weight:700;margin-bottom:8px;color:var(--text)}
.feature-desc{font-size:0.88rem;color:var(--text-muted);line-height:1.7}

/* ---------- 专家卡片 ---------- */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.expert-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);text-align:center}
.expert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.expert-avatar{width:100%;aspect-ratio:3/2;object-fit:cover}
.expert-body{padding:20px 16px}
.expert-name{font-size:1.05rem;font-weight:700;margin-bottom:4px}
.expert-role{font-size:0.82rem;color:var(--primary);font-weight:600;margin-bottom:8px}
.expert-desc{font-size:0.82rem;color:var(--text-muted);margin-bottom:14px}
.expert-awards{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-bottom:14px}
.expert-actions{display:flex;gap:8px;justify-content:center}
.expert-actions .btn{padding:8px 16px;font-size:0.8rem}

/* ---------- 合作品牌 ---------- */
.partner-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px}
.partner-item{background:#fff;border-radius:var(--radius-sm);padding:20px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);transition:all var(--transition);font-weight:700;font-size:1rem;color:var(--text-muted)}
.partner-item:hover{border-color:var(--primary);color:var(--primary);box-shadow:var(--shadow)}

/* ---------- 加入指南 ---------- */
.join-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:24px;counter-reset:step}
.join-step{background:#fff;border-radius:var(--radius);padding:28px 22px;box-shadow:var(--shadow);position:relative;counter-increment:step}
.join-step::before{content:counter(step);position:absolute;top:-14px;left:24px;width:28px;height:28px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.82rem;font-weight:700;line-height:28px;text-align:center}
.join-step-icon{font-size:2rem;margin-bottom:12px}
.join-step-title{font-size:1rem;font-weight:700;margin-bottom:8px}
.join-step-desc{font-size:0.85rem;color:var(--text-muted)}

/* ---------- FAQ ---------- */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border-radius:var(--radius-sm);border:1px solid var(--border);overflow:hidden}
.faq-q{padding:18px 22px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background var(--transition)}
.faq-q:hover{background:var(--bg2)}
.faq-q::after{content:'＋';font-size:1.2rem;color:var(--primary);transition:transform var(--transition);flex-shrink:0}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 22px;max-height:0;overflow:hidden;transition:max-height 0.35s ease,padding 0.35s ease;font-size:0.9rem;color:var(--text-muted);line-height:1.8}
.faq-item.open .faq-a{max-height:300px;padding:0 22px 18px}

/* ---------- 用户评价 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px}
.review-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent2));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1rem;flex-shrink:0}
.review-name{font-weight:700;font-size:0.95rem}
.review-date{font-size:0.75rem;color:var(--text-muted)}
.review-stars{color:#FFB800;font-size:0.9rem;margin-bottom:10px}
.review-text{font-size:0.88rem;color:var(--text-muted);line-height:1.8}
.review-tag{margin-top:10px}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info{display:flex;flex-direction:column;gap:16px}
.contact-item{display:flex;align-items:flex-start;gap:14px;padding:16px;background:#fff;border-radius:var(--radius-sm);border:1px solid var(--border)}
.contact-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--primary),var(--accent2));border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;flex-shrink:0}
.contact-label{font-size:0.78rem;color:var(--text-muted);margin-bottom:2px}
.contact-value{font-weight:600;font-size:0.92rem}
.qr-wrap{display:flex;gap:20px;flex-wrap:wrap}
.qr-item{text-align:center}
.qr-item img{width:120px;height:120px;border-radius:10px;border:2px solid var(--border)}
.qr-label{font-size:0.78rem;color:var(--text-muted);margin-top:6px}

/* ---------- 页脚 ---------- */
#site-footer{background:var(--bg-dark);color:rgba(255,255,255,0.75);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer-brand .logo-name{font-size:1.4rem;font-weight:800;background:linear-gradient(135deg,var(--primary-light),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:12px}
.footer-brand p{font-size:0.88rem;line-height:1.8;color:rgba(255,255,255,0.55);margin-bottom:20px}
.footer-social{display:flex;gap:10px;flex-wrap:wrap}
.social-icon{width:36px;height:36px;border-radius:8px;background:rgba(255,255,255,0.08);display:flex;align-items:center;justify-content:center;font-size:0.75rem;font-weight:700;transition:all var(--transition);color:rgba(255,255,255,0.7)}
.social-icon:hover{background:var(--primary);color:#fff}
.footer-col h4{font-size:0.95rem;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:0.85rem;color:rgba(255,255,255,0.55);transition:color var(--transition)}
.footer-col ul li a:hover{color:var(--primary-light)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:20px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:gap;gap:12px;font-size:0.82rem;color:rgba(255,255,255,0.4)}
.footer-bottom a{color:rgba(255,255,255,0.4);transition:color var(--transition)}
.footer-bottom a:hover{color:var(--primary-light)}
.update-time{color:rgba(255,255,255,0.3);font-size:0.78rem}

/* ---------- 面包屑 ---------- */
.breadcrumb{background:#fff;border-bottom:1px solid var(--border);padding:12px 0}
.breadcrumb ol{display:flex;align-items:center;gap:8px;font-size:0.85rem;color:var(--text-muted)}
.breadcrumb li+li::before{content:'›';color:var(--border)}
.breadcrumb a{color:var(--text-muted);transition:color var(--transition)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--primary);font-weight:600}

/* ---------- 分享栏 ---------- */
.share-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.share-label{font-size:0.85rem;color:var(--text-muted);font-weight:600}
.share-btn{padding:7px 16px;border-radius:50px;font-size:0.8rem;font-weight:600;border:1.5px solid var(--border);color:var(--text-muted);transition:all var(--transition);display:flex;align-items:center;gap:6px}
.share-btn:hover{border-color:var(--primary);color:var(--primary)}
.share-btn.wechat:hover{background:#07C160;border-color:#07C160;color:#fff}
.share-btn.weibo:hover{background:#E6162D;border-color:#E6162D;color:#fff}
.share-btn.douyin:hover{background:#000;border-color:#000;color:#fff}
.share-btn.bilibili:hover{background:#00A1D6;border-color:#00A1D6;color:#fff}

/* ---------- 视频模态框 ---------- */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.85);z-index:9999;display:none;align-items:center;justify-content:center}
.modal-overlay.active{display:flex}
.modal-box{background:#1a0a12;border-radius:var(--radius);overflow:hidden;max-width:800px;width:90%;position:relative}
.modal-close{position:absolute;top:12px;right:12px;width:32px;height:32px;background:rgba(255,255,255,0.15);border-radius:50%;color:#fff;font-size:1rem;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:1;transition:background var(--transition)}
.modal-close:hover{background:var(--primary)}
.modal-video{width:100%;aspect-ratio:16/9;background:#000}

/* ---------- 回到顶部 ---------- */
#back-top{position:fixed;bottom:28px;right:28px;width:44px;height:44px;background:var(--primary);color:#fff;border-radius:50%;font-size:1.1rem;display:none;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(232,76,137,0.4);z-index:999;transition:all var(--transition)}
#back-top.show{display:flex}
#back-top:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(232,76,137,0.5)}

/* ---------- 搜索提示 ---------- */
.search-tip{position:absolute;top:calc(100% + 8px);left:0;right:0;background:#fff;border-radius:var(--radius-sm);box-shadow:var(--shadow-hover);padding:12px 16px;font-size:0.85rem;color:var(--text-muted);display:none;z-index:100;border:1px solid var(--border)}

/* ---------- 统计数字 ---------- */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-item{padding:28px 16px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}
.stat-num{font-size:2.2rem;font-weight:800;color:var(--primary);margin-bottom:6px}
.stat-label{font-size:0.85rem;color:var(--text-muted)}

/* ---------- 内页 Hero ---------- */
.page-hero{background:linear-gradient(135deg,var(--bg-dark),#2D0A1E);padding:56px 0;text-align:center;color:#fff}
.page-hero h1{font-size:2.2rem;font-weight:800;margin-bottom:12px}
.page-hero h1 span{color:var(--primary-light)}
.page-hero p{color:rgba(255,255,255,0.65);font-size:1rem;max-width:500px;margin:0 auto}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .stats-row{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .hero h1{font-size:2rem}
  .hero-stats{gap:24px}
  #main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:16px;border-bottom:1px solid var(--border);box-shadow:0 8px 20px rgba(0,0,0,0.1)}
  #main-nav.open{display:flex}
  #main-nav a{padding:12px 16px;border-radius:8px}
  #menu-toggle{display:flex}
  .header-inner{position:relative}
  #search-input{width:120px}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:48px 0}
  .section-title{font-size:1.6rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .hero-stats{flex-wrap:wrap;gap:20px}
}
@media(max-width:480px){
  .hero{min-height:440px}
  .hero h1{font-size:1.6rem}
  .hero-actions{flex-direction:column}
  .stats-row{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:1fr}
  .join-steps{grid-template-columns:1fr}
}

/* ---------- 懒加载 ---------- */
img[loading="lazy"]{opacity:0;transition:opacity 0.4s}
img[loading="lazy"].loaded{opacity:1}

/* ---------- 动画 ---------- */
@keyframes fadeInUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.fade-in-up{animation:fadeInUp 0.6s ease both}
.delay-1{animation-delay:0.1s}
.delay-2{animation-delay:0.2s}
.delay-3{animation-delay:0.3s}