/* =============================================
   海角视频 - 主样式文件
   Brand: 海角 | Domain: qeeuo14.cn
   ============================================= */

/* ---- CSS变量 ---- */
:root {
  --primary: #0a1628;
  --secondary: #1e3a5f;
  --accent: #00d4ff;
  --accent2: #7c3aed;
  --gold: #f59e0b;
  --text: #1a2332;
  --text-light: #6b7a8d;
  --bg: #f4f7fb;
  --bg-dark: #0a1628;
  --white: #ffffff;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(10,22,40,0.10);
  --shadow-hover: 0 8px 40px rgba(10,22,40,0.18);
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
  --font: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
}

/* ---- Reset ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;font-size:16px;}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
button{cursor:pointer;border:none;background:none;font-family:inherit;}

/* ---- 通用工具类 ---- */
.container{max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:72px 0;}
.section-alt{background:#f0f4fa;}
.text-center{text-align:center;}
.flex{display:flex;}
.flex-center{display:flex;align-items:center;justify-content:center;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.hidden{display:none;}

/* ---- 标题样式 ---- */
.section-title{font-size:2rem;font-weight:700;color:var(--primary);margin-bottom:12px;letter-spacing:.02em;}
.section-title span{color:var(--accent);}
.section-subtitle{font-size:1.05rem;color:var(--text-light);margin-bottom:40px;}
.badge{display:inline-block;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-size:.75rem;font-weight:600;padding:3px 10px;border-radius:20px;margin-bottom:10px;letter-spacing:.05em;}

/* ---- 按钮 ---- */
.btn{display:inline-flex;align-items:center;gap:6px;padding:11px 28px;border-radius:8px;font-size:.95rem;font-weight:600;transition:var(--transition);}
.btn-primary{background:linear-gradient(135deg,var(--accent),#0099cc);color:#fff;box-shadow:0 4px 16px rgba(0,212,255,.25);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,212,255,.35);}
.btn-outline{border:2px solid var(--accent);color:var(--accent);}
.btn-outline:hover{background:var(--accent);color:#fff;}
.btn-gold{background:linear-gradient(135deg,var(--gold),#d97706);color:#fff;}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(245,158,11,.3);}

/* ---- 顶部导航 ---- */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(10,22,40,.97);backdrop-filter:blur(12px);border-bottom:1px solid rgba(0,212,255,.15);box-shadow:0 2px 20px rgba(0,0,0,.3);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;padding:0 20px;max-width:1200px;margin:0 auto;}
.site-logo{display:flex;align-items:center;gap:10px;text-decoration:none;}
.site-logo img{width:40px;height:40px;border-radius:8px;object-fit:cover;}
.site-logo .logo-text{font-size:1.4rem;font-weight:800;color:var(--white);letter-spacing:.05em;}
.site-logo .logo-text span{color:var(--accent);}
.site-nav{display:flex;align-items:center;gap:4px;}
.site-nav a{color:rgba(255,255,255,.85);font-size:.9rem;font-weight:500;padding:6px 14px;border-radius:6px;transition:var(--transition);}
.site-nav a:hover,.site-nav a.active{color:var(--accent);background:rgba(0,212,255,.1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-btn-join{background:linear-gradient(135deg,var(--accent),#0099cc);color:#fff;padding:7px 18px;border-radius:6px;font-size:.85rem;font-weight:600;transition:var(--transition);}
.nav-btn-join:hover{transform:translateY(-1px);box-shadow:0 4px 14px rgba(0,212,255,.35);}
.hamburger{display:none;flex-direction:column;gap:5px;padding:4px;}
.hamburger span{display:block;width:24px;height:2px;background:#fff;border-radius:2px;transition:var(--transition);}

/* ---- 搜索栏 ---- */
.search-bar{background:rgba(255,255,255,.06);border-bottom:1px solid rgba(0,212,255,.1);padding:10px 0;}
.search-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:12px;}
.search-form{display:flex;align-items:center;flex:1;max-width:600px;background:rgba(255,255,255,.1);border:1px solid rgba(0,212,255,.25);border-radius:24px;overflow:hidden;transition:var(--transition);}
.search-form:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,212,255,.15);}
.search-form input{flex:1;background:none;border:none;outline:none;color:#fff;font-size:.9rem;padding:8px 16px;font-family:var(--font);}
.search-form input::placeholder{color:rgba(255,255,255,.45);}
.search-form button{background:linear-gradient(135deg,var(--accent),#0099cc);color:#fff;border:none;padding:8px 18px;font-size:.85rem;font-weight:600;cursor:pointer;transition:var(--transition);}
.search-form button:hover{opacity:.9;}
.search-tags{display:flex;gap:8px;flex-wrap:wrap;}
.search-tags a{color:rgba(255,255,255,.6);font-size:.8rem;padding:3px 10px;border:1px solid rgba(255,255,255,.15);border-radius:12px;transition:var(--transition);}
.search-tags a:hover{color:var(--accent);border-color:var(--accent);}

/* ---- 英雄区 ---- */
.hero{position:relative;height:560px;overflow:hidden;display:flex;align-items:center;}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.55);}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,22,40,.85) 0%,rgba(30,58,95,.6) 50%,rgba(124,58,237,.3) 100%);}
.hero-content{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:0 20px;}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(0,212,255,.15);border:1px solid rgba(0,212,255,.4);color:var(--accent);font-size:.8rem;font-weight:600;padding:5px 14px;border-radius:20px;margin-bottom:20px;letter-spacing:.05em;}
.hero h1{font-size:3rem;font-weight:800;color:#fff;line-height:1.2;margin-bottom:16px;text-shadow:0 2px 20px rgba(0,0,0,.4);}
.hero h1 span{color:var(--accent);}
.hero-desc{font-size:1.1rem;color:rgba(255,255,255,.8);max-width:560px;margin-bottom:32px;line-height:1.8;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:32px;margin-top:40px;}
.hero-stat{text-align:center;}
.hero-stat .num{font-size:1.8rem;font-weight:800;color:var(--accent);}
.hero-stat .label{font-size:.8rem;color:rgba(255,255,255,.65);}

/* ---- 视频卡片 ---- */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.video-card{background:var(--card-bg);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);cursor:pointer;}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .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;background:rgba(0,0,0,.3);opacity:0;transition:var(--transition);}
.video-card:hover .play-btn{opacity:1;}
.play-btn svg{width:52px;height:52px;filter:drop-shadow(0 2px 8px rgba(0,0,0,.5));}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;font-size:.72rem;padding:2px 7px;border-radius:4px;}
.video-tag{position:absolute;top:8px;left:8px;background:linear-gradient(135deg,var(--accent),#0099cc);color:#fff;font-size:.7rem;font-weight:600;padding:2px 8px;border-radius:4px;}
.video-info{padding:14px;}
.video-title{font-size:.9rem;font-weight:600;color:var(--text);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:.78rem;color:var(--text-light);}
.video-meta span{display:flex;align-items:center;gap:3px;}
.video-author{display:flex;align-items:center;gap:8px;margin-top:10px;}
.video-author img{width:24px;height:24px;border-radius:50%;object-fit:cover;}
.video-author span{font-size:.78rem;color:var(--text-light);}

/* ---- 专家卡片 ---- */
.expert-card{background:var(--card-bg);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);text-align:center;}
.expert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.expert-avatar{width:100%;height:220px;object-fit:cover;object-position:top;}
.expert-body{padding:20px;}
.expert-name{font-size:1.05rem;font-weight:700;color:var(--primary);margin-bottom:4px;}
.expert-role{font-size:.82rem;color:var(--accent);font-weight:600;margin-bottom:10px;}
.expert-desc{font-size:.83rem;color:var(--text-light);line-height:1.6;margin-bottom:14px;}
.expert-awards{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-bottom:14px;}
.expert-awards span{background:#f0f4fa;color:var(--secondary);font-size:.72rem;padding:3px 9px;border-radius:12px;}
.expert-actions{display:flex;gap:8px;justify-content:center;}
.expert-actions a{font-size:.8rem;padding:6px 14px;border-radius:6px;}

/* ---- 评论卡片 ---- */
.review-card{background:var(--card-bg);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:var(--transition);}
.review-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.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(--accent),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:600;font-size:.92rem;color:var(--primary);}
.review-date{font-size:.75rem;color:var(--text-light);}
.review-stars{color:var(--gold);font-size:.9rem;margin-bottom:10px;}
.review-text{font-size:.88rem;color:var(--text);line-height:1.7;}
.review-tag{display:inline-block;background:#f0f4fa;color:var(--accent);font-size:.72rem;padding:2px 8px;border-radius:10px;margin-top:10px;}

/* ---- FAQ ---- */
.faq-item{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin-bottom:12px;transition:var(--transition);}
.faq-item.open{border-color:var(--accent);}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;font-weight:600;font-size:.95rem;color:var(--primary);background:#fff;transition:var(--transition);}
.faq-q:hover{background:#f8fbff;}
.faq-q .icon{width:22px;height:22px;background:linear-gradient(135deg,var(--accent),#0099cc);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:.8rem;flex-shrink:0;transition:transform .3s;}
.faq-item.open .faq-q .icon{transform:rotate(45deg);}
.faq-a{padding:0 22px;max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease;}
.faq-item.open .faq-a{max-height:300px;padding:14px 22px 20px;}
.faq-a p{font-size:.88rem;color:var(--text-light);line-height:1.8;}

/* ---- 合作品牌墙 ---- */
.partner-wall{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;align-items:center;}
.partner-item{background:#fff;border:1px solid var(--border);border-radius:10px;padding:14px 24px;font-size:.88rem;font-weight:600;color:var(--secondary);transition:var(--transition);}
.partner-item:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow);}

/* ---- 联系我们 ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;}
.contact-card{background:#fff;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);}
.contact-card h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin-bottom:18px;display:flex;align-items:center;gap:8px;}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px;}
.contact-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--accent),#0099cc);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.contact-icon svg{width:18px;height:18px;fill:#fff;}
.contact-label{font-size:.78rem;color:var(--text-light);}
.contact-value{font-size:.9rem;font-weight:600;color:var(--text);}
.qr-row{display:flex;gap:20px;margin-top:16px;}
.qr-item{text-align:center;}
.qr-item img{width:100px;height:100px;border-radius:8px;border:2px solid var(--border);}
.qr-item p{font-size:.75rem;color:var(--text-light);margin-top:6px;}

/* ---- 社区入口 ---- */
.community-entry{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.entry-card{background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:var(--radius);padding:24px;text-align:center;color:#fff;transition:var(--transition);cursor:pointer;}
.entry-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(10,22,40,.3);}
.entry-icon{font-size:2rem;margin-bottom:12px;}
.entry-title{font-size:1rem;font-weight:700;margin-bottom:6px;}
.entry-desc{font-size:.8rem;color:rgba(255,255,255,.7);}

/* ---- 页脚 ---- */
.site-footer{background:var(--primary);color:rgba(255,255,255,.75);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px;}
.footer-brand .logo-wrap{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .logo-wrap img{width:36px;height:36px;border-radius:6px;}
.footer-brand .logo-wrap span{font-size:1.2rem;font-weight:800;color:#fff;}
.footer-brand p{font-size:.85rem;line-height:1.8;color:rgba(255,255,255,.6);margin-bottom:18px;}
.footer-social{display:flex;gap:10px;}
.footer-social a{width:34px;height:34px;background:rgba(255,255,255,.1);border-radius:8px;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.7);font-size:.8rem;transition:var(--transition);}
.footer-social a:hover{background:var(--accent);color:#fff;}
.footer-col h4{font-size:.92rem;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-col ul li{margin-bottom:8px;}
.footer-col ul li a{font-size:.83rem;color:rgba(255,255,255,.6);transition:var(--transition);}
.footer-col ul li a:hover{color:var(--accent);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;}
.footer-bottom p{font-size:.8rem;color:rgba(255,255,255,.45);}
.footer-links{display:flex;gap:16px;}
.footer-links a{font-size:.8rem;color:rgba(255,255,255,.45);transition:var(--transition);}
.footer-links a:hover{color:var(--accent);}

/* ---- 面包屑 ---- */
.breadcrumb{background:#fff;border-bottom:1px solid var(--border);padding:12px 0;}
.breadcrumb-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:8px;font-size:.83rem;color:var(--text-light);}
.breadcrumb-inner a{color:var(--accent);}
.breadcrumb-inner span{color:var(--text-light);}

/* ---- 内页Hero ---- */
.page-hero{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);padding:56px 0;text-align:center;color:#fff;}
.page-hero h1{font-size:2.2rem;font-weight:800;margin-bottom:12px;}
.page-hero p{font-size:1rem;color:rgba(255,255,255,.75);max-width:600px;margin:0 auto;}

/* ---- 分享按钮 ---- */
.share-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.share-bar span{font-size:.85rem;color:var(--text-light);}
.share-btn{display:inline-flex;align-items:center;gap:5px;padding:6px 14px;border-radius:6px;font-size:.8rem;font-weight:600;transition:var(--transition);}
.share-wechat{background:#07C160;color:#fff;}
.share-weibo{background:#E6162D;color:#fff;}
.share-douyin{background:#000;color:#fff;}
.share-bilibili{background:#00A1D6;color:#fff;}
.share-btn:hover{opacity:.85;transform:translateY(-1px);}

/* ---- 响应式 ---- */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:768px){
  .hero h1{font-size:2rem;}
  .hero{height:auto;padding:60px 0;}
  .video-grid{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:1fr;}
  .grid-2{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .community-entry{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .site-nav{display:none;}
  .hamburger{display:flex;}
  .hero-stats{gap:16px;}
  .section{padding:48px 0;}
  .section-title{font-size:1.5rem;}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr;}
  .hero h1{font-size:1.6rem;}
  .hero-actions{flex-direction:column;}
  .btn{width:100%;justify-content:center;}
}

/* ---- 移动端菜单 ---- */
.mobile-menu{display:none;position:fixed;inset:0;z-index:2000;background:rgba(10,22,40,.98);flex-direction:column;align-items:center;justify-content:center;gap:24px;}
.mobile-menu.open{display:flex;}
.mobile-menu a{color:#fff;font-size:1.2rem;font-weight:600;transition:var(--transition);}
.mobile-menu a:hover{color:var(--accent);}
.mobile-close{position:absolute;top:20px;right:20px;color:#fff;font-size:1.5rem;cursor:pointer;}

/* ---- 加载动画 ---- */
.lazy{opacity:0;transition:opacity .5s;}
.lazy.loaded{opacity:1;}

/* ---- 统计数字 ---- */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;}
.stat-item{background:#fff;border-radius:var(--radius);padding:28px 20px;box-shadow:var(--shadow);}
.stat-num{font-size:2.2rem;font-weight:800;color:var(--accent);margin-bottom:6px;}
.stat-label{font-size:.85rem;color:var(--text-light);}

/* ---- 标签云 ---- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag{display:inline-block;background:#f0f4fa;color:var(--secondary);font-size:.8rem;padding:5px 13px;border-radius:16px;transition:var(--transition);}
.tag:hover{background:var(--accent);color:#fff;}

/* ---- 分页 ---- */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:40px;}
.pagination a,.pagination span{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:8px;font-size:.88rem;font-weight:600;transition:var(--transition);}
.pagination a{background:#fff;color:var(--text);border:1px solid var(--border);}
.pagination a:hover,.pagination .current{background:var(--accent);color:#fff;border-color:var(--accent);}

/* ---- 通知栏 ---- */
.notice-bar{background:linear-gradient(90deg,var(--accent),var(--accent2));color:#fff;padding:8px 0;font-size:.82rem;text-align:center;overflow:hidden;}
.notice-bar .marquee{display:inline-block;animation:marquee 30s linear infinite;white-space:nowrap;}
@keyframes marquee{0%{transform:translateX(100vw);}100%{transform:translateX(-100%);}}

/* ---- 视频播放模态框 ---- */
.modal-overlay{display:none;position:fixed;inset:0;z-index:3000;background:rgba(0,0,0,.85);align-items:center;justify-content:center;}
.modal-overlay.open{display:flex;}
.modal-box{background:#000;border-radius:12px;overflow:hidden;max-width:800px;width:90%;position:relative;}
.modal-close{position:absolute;top:10px;right:14px;color:#fff;font-size:1.5rem;cursor:pointer;z-index:1;}
.modal-video{width:100%;aspect-ratio:16/9;background:#111;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.5);font-size:.9rem;}