/* ===== 每日大赛官网主样式 | ahtnzd.cn ===== */
*,*::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;color:#222;background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:color .25s}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== 颜色变量 ===== */
:root{
  --red:#c0392b;
  --red-dark:#96281b;
  --red-light:rgba(192,57,43,.08);
  --gold:#d4a017;
  --dark:#1a1a2e;
  --gray:#f5f6fa;
  --border:#e5e7eb;
  --text:#444;
  --text-light:#888;
}

/* ===== 顶部通知栏 ===== */
.top-bar{background:var(--red);color:#fff;text-align:center;font-size:.8rem;padding:7px 0;letter-spacing:.05em}
.top-bar a{color:#ffe;text-decoration:underline}

/* ===== 导航 ===== */
.site-header{background:#fff;border-bottom:2px solid var(--red);position:sticky;top:0;z-index:1000;box-shadow:0 2px 12px rgba(0,0,0,.08)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.3rem;font-weight:800;color:var(--dark);white-space:nowrap}
.logo-icon{width:44px;height:44px;background:var(--red);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;font-weight:900;flex-shrink:0}
.logo-text span{color:var(--red)}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:8px 14px;border-radius:6px;font-size:.9rem;font-weight:500;color:var(--dark);transition:all .2s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{background:var(--red);color:#fff}
.nav-cta{background:var(--red);color:#fff!important;border-radius:20px!important;padding:8px 20px!important;font-weight:700!important}
.nav-cta:hover{background:var(--red-dark)!important}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px}
.hamburger span{display:block;width:24px;height:2px;background:var(--dark);border-radius:2px;transition:all .3s}

/* ===== 搜索栏 ===== */
.search-bar{background:var(--gray);border-bottom:1px solid var(--border);padding:10px 0}
.search-inner{display:flex;align-items:center;gap:10px;max-width:600px;margin:0 auto;padding:0 20px}
.search-inner input{flex:1;border:1.5px solid var(--border);border-radius:24px;padding:9px 18px;font-size:.9rem;outline:none;background:#fff;transition:border .2s}
.search-inner input:focus{border-color:var(--red)}
.search-inner button{background:var(--red);color:#fff;border:none;border-radius:24px;padding:9px 22px;font-size:.9rem;font-weight:600;cursor:pointer;white-space:nowrap;transition:background .2s}
.search-inner button:hover{background:var(--red-dark)}

/* ===== 面包屑 ===== */
.breadcrumb-bar{background:var(--gray);border-bottom:1px solid var(--border);padding:10px 0}
.breadcrumb{display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--text-light)}
.breadcrumb a{color:var(--text-light);transition:color .2s}
.breadcrumb a:hover{color:var(--red)}
.breadcrumb .sep{color:#ccc}
.breadcrumb .current{color:var(--dark);font-weight:500}

/* ===== 页面Hero ===== */
.page-hero{background:linear-gradient(135deg,var(--dark) 0%,#2d1b1b 100%);color:#fff;padding:56px 0 48px;text-align:center}
.page-hero h1{font-size:2rem;font-weight:800;margin-bottom:12px}
.page-hero h1 span{color:var(--gold)}
.page-hero p{font-size:1rem;opacity:.85;max-width:600px;margin:0 auto}

/* ===== 首屏Banner ===== */
.hero-banner{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden;background:var(--dark)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.35}
.hero-content{position:relative;z-index:2;max-width:700px;color:#fff;padding:60px 0}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(192,57,43,.25);border:1px solid rgba(192,57,43,.5);color:#ffb3ae;font-size:.8rem;padding:5px 14px;border-radius:20px;margin-bottom:20px}
.hero-badge::before{content:'🔴';font-size:.7rem}
.hero-title{font-size:2.6rem;font-weight:900;line-height:1.2;margin-bottom:16px}
.hero-title span{color:var(--gold)}
.hero-desc{font-size:1rem;opacity:.85;line-height:1.8;margin-bottom:28px;max-width:560px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{background:var(--red);color:#fff;padding:13px 28px;border-radius:8px;font-size:.95rem;font-weight:700;display:inline-flex;align-items:center;gap:6px;transition:all .25s;border:2px solid var(--red)}
.btn-primary:hover{background:var(--red-dark);border-color:var(--red-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(192,57,43,.4)}
.btn-outline{background:transparent;color:#fff;padding:13px 28px;border-radius:8px;font-size:.95rem;font-weight:700;display:inline-flex;align-items:center;gap:6px;transition:all .25s;border:2px solid rgba(255,255,255,.5)}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff}
.hero-stats{display:flex;gap:32px;margin-top:36px;flex-wrap:wrap}
.hero-stat-item{text-align:center}
.hero-stat-num{font-size:1.6rem;font-weight:800;color:var(--gold);line-height:1}
.hero-stat-label{font-size:.78rem;opacity:.7;margin-top:4px}

/* ===== 通用Section ===== */
.section{padding:72px 0}
.section-alt{background:var(--gray)}
.section-header{text-align:center;margin-bottom:48px}
.section-tag{display:inline-block;background:var(--red-light);color:var(--red);font-size:.78rem;font-weight:700;padding:4px 14px;border-radius:12px;margin-bottom:12px;letter-spacing:.08em}
.section-title{font-size:1.9rem;font-weight:800;color:var(--dark);margin-bottom:12px}
.section-title span{color:var(--red)}
.section-desc{font-size:.95rem;color:var(--text);max-width:560px;margin:0 auto;line-height:1.8}

/* ===== 视频卡片 ===== */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.07);transition:all .3s;cursor:pointer;border:1px solid var(--border)}
.video-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,.14)}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:4/3}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.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,.0);transition:background .3s}
.play-btn-icon{width:52px;height:52px;background:rgba(255,255,255,.95);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transform:scale(.7);transition:all .3s;box-shadow:0 4px 16px rgba(0,0,0,.3)}
.play-btn-icon::after{content:'';border-left:18px solid var(--red);border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:4px}
.video-card:hover .play-btn{background:rgba(0,0,0,.35)}
.video-card:hover .play-btn-icon{opacity:1;transform:scale(1)}
.video-meta{padding:14px}
.video-cat{font-size:.72rem;color:var(--red);font-weight:700;margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em}
.video-title{font-size:.88rem;font-weight:700;color:var(--dark);line-height:1.4;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-stats{display:flex;gap:12px;font-size:.75rem;color:var(--text-light)}
.video-stats span{display:flex;align-items:center;gap:3px}
.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}

/* ===== 视频模态框 ===== */
.video-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.85);z-index:9999;align-items:center;justify-content:center}
.video-modal.active{display:flex}
.video-modal-inner{background:#000;border-radius:12px;overflow:hidden;max-width:800px;width:92%;position:relative}
.video-modal-close{position:absolute;top:12px;right:14px;color:#fff;font-size:1.6rem;cursor:pointer;z-index:10;line-height:1;opacity:.8;transition:opacity .2s}
.video-modal-close:hover{opacity:1}
.video-modal video{width:100%;display:block;max-height:480px;background:#111}
.video-modal-info{padding:16px 20px;background:#1a1a2e;color:#fff}
.video-modal-title{font-size:1rem;font-weight:700;margin-bottom:6px}
.video-modal-desc{font-size:.85rem;opacity:.7;line-height:1.6}

/* ===== 品牌介绍 ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-img{border-radius:16px;overflow:hidden;box-shadow:0 8px 32px rgba(0,0,0,.12)}
.about-img img{width:100%;height:360px;object-fit:cover}
.about-text h2{font-size:1.7rem;font-weight:800;color:var(--dark);margin-bottom:16px}
.about-text h2 span{color:var(--red)}
.about-text p{color:var(--text);line-height:1.9;margin-bottom:16px;font-size:.95rem}
.about-features{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
.about-feature-item{display:flex;align-items:flex-start;gap:10px;padding:12px;background:var(--gray);border-radius:8px}
.about-feature-icon{font-size:1.3rem;flex-shrink:0;margin-top:1px}
.about-feature-text h4{font-size:.88rem;font-weight:700;color:var(--dark);margin-bottom:3px}
.about-feature-text p{font-size:.8rem;color:var(--text-light);line-height:1.5}

/* ===== 服务卡片 ===== */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:#fff;border-radius:14px;padding:28px;border:1px solid var(--border);transition:all .3s;position:relative;overflow:hidden}
.service-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.service-card:hover{box-shadow:0 8px 32px rgba(0,0,0,.1);transform:translateY(-3px)}
.service-card:hover::before{transform:scaleX(1)}
.service-icon{font-size:2.2rem;margin-bottom:16px}
.service-card h3{font-size:1.05rem;font-weight:700;color:var(--dark);margin-bottom:10px}
.service-card p{font-size:.875rem;color:var(--text);line-height:1.8}
.service-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.service-tag{background:var(--red-light);color:var(--red);font-size:.72rem;padding:3px 10px;border-radius:10px;font-weight:500}

/* ===== 案例卡片 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.07);transition:all .3s;border:1px solid var(--border)}
.case-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,.12)}
.case-img{position:relative;overflow:hidden;height:180px}
.case-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.case-card:hover .case-img img{transform:scale(1.05)}
.case-cat-badge{position:absolute;top:10px;left:10px;background:var(--red);color:#fff;font-size:.72rem;padding:3px 10px;border-radius:10px;font-weight:600}
.case-body{padding:18px}
.case-body h3{font-size:.95rem;font-weight:700;color:var(--dark);margin-bottom:8px;line-height:1.4}
.case-body p{font-size:.82rem;color:var(--text);line-height:1.7;margin-bottom:14px}
.case-stats{display:flex;gap:16px;flex-wrap:wrap}
.case-stat{text-align:center}
.case-stat-val{font-size:1rem;font-weight:800;color:var(--red)}
.case-stat-key{font-size:.7rem;color:var(--text-light);margin-top:1px}

/* ===== 资讯卡片 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border-radius:12px;overflow:hidden;border:1px solid var(--border);transition:all .3s}
.news-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.1);transform:translateY(-3px)}
.news-img{height:160px;overflow:hidden}
.news-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-card:hover .news-img img{transform:scale(1.05)}
.news-body{padding:16px}
.news-meta{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.news-cat{font-size:.72rem;color:var(--red);font-weight:700;background:var(--red-light);padding:2px 8px;border-radius:8px}
.news-date{font-size:.75rem;color:var(--text-light)}
.news-body h3{font-size:.9rem;font-weight:700;color:var(--dark);line-height:1.4;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:.8rem;color:var(--text);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ===== 用户评价 ===== */
.reviews-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.review-card{background:#fff;border-radius:12px;padding:22px;border:1px solid var(--border);box-shadow:0 2px 8px rgba(0,0,0,.05);transition:all .3s}
.review-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.1);transform:translateY(-3px)}
.review-stars{color:#f59e0b;font-size:1rem;margin-bottom:10px;letter-spacing:2px}
.review-text{font-size:.85rem;color:var(--text);line-height:1.7;margin-bottom:14px;font-style:italic}
.review-author{display:flex;align-items:center;gap:10px}
.review-avatar{width:36px;height:36px;border-radius:50%;background:var(--red);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;flex-shrink:0}
.review-name{font-size:.85rem;font-weight:700;color:var(--dark)}
.review-role{font-size:.75rem;color:var(--text-light)}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--border);border-radius:10px;overflow:hidden}
.faq-q{padding:16px 20px;background:#fff;font-size:.9rem;font-weight:700;color:var(--dark);cursor:pointer;display:flex;justify-content:space-between;align-items:center;user-select:none;transition:background .2s}
.faq-q:hover{background:var(--gray)}
.faq-q.open{background:var(--red);color:#fff}
.faq-arrow{font-size:.8rem;transition:transform .3s;flex-shrink:0}
.faq-q.open .faq-arrow{transform:rotate(180deg)}
.faq-a{display:none;padding:16px 20px;font-size:.875rem;color:var(--text);line-height:1.8;background:#fafafa;border-top:1px solid var(--border)}
.faq-a.open{display:block}

/* ===== 合作伙伴 ===== */
.partners-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.partner-item{background:#fff;border:1px solid var(--border);border-radius:10px;padding:16px;display:flex;align-items:center;justify-content:center;font-size:.82rem;font-weight:700;color:var(--text-light);text-align:center;min-height:64px;transition:all .3s}
.partner-item:hover{border-color:var(--red);color:var(--red);box-shadow:0 4px 12px rgba(192,57,43,.12)}

/* ===== 联系模块 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.contact-info{display:flex;flex-direction:column;gap:20px}
.contact-item{display:flex;align-items:flex-start;gap:14px;padding:18px;background:#fff;border-radius:10px;border:1px solid var(--border)}
.contact-icon{font-size:1.5rem;flex-shrink:0;margin-top:2px}
.contact-label{font-size:.78rem;color:var(--text-light);margin-bottom:3px}
.contact-value{font-size:.95rem;font-weight:700;color:var(--dark)}
.contact-form{display:flex;flex-direction:column;gap:14px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-group label{display:block;font-size:.82rem;font-weight:600;color:var(--dark);margin-bottom:5px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 14px;border:1.5px solid var(--border);border-radius:7px;font-size:.875rem;outline:none;transition:border .2s;font-family:inherit;background:#fff}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--red)}
.form-group textarea{resize:vertical;min-height:100px}
.btn-submit{background:var(--red);color:#fff;border:none;padding:13px 32px;border-radius:7px;font-size:.95rem;font-weight:700;cursor:pointer;transition:background .2s;width:100%}
.btn-submit:hover{background:var(--red-dark)}

/* ===== 数字统计 ===== */
.stats-bar{background:var(--dark);padding:48px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-item{}
.stat-num{font-size:2.2rem;font-weight:900;color:var(--gold);line-height:1}
.stat-label{font-size:.85rem;color:rgba(255,255,255,.7);margin-top:6px}

/* ===== 页脚 ===== */
.site-footer{background:#111827;color:#9ca3af;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo{color:#fff;margin-bottom:14px}
.footer-brand p{font-size:.85rem;line-height:1.8;max-width:280px}
.footer-col h4{font-size:.95rem;font-weight:700;color:#fff;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-col ul{display:flex;flex-direction:column;gap:8px}
.footer-col ul li a{font-size:.85rem;color:#9ca3af;transition:color .2s}
.footer-col ul li a:hover{color:#fff}
.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:.82rem}
.footer-bottom a{color:#9ca3af;transition:color .2s}
.footer-bottom a:hover{color:#fff}
.footer-social{display:flex;gap:12px}
.footer-social a{width:34px;height:34px;background:rgba(255,255,255,.08);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.9rem;transition:background .2s}
.footer-social a:hover{background:var(--red)}
.footer-qrcodes{display:flex;gap:16px;margin-top:16px}
.footer-qr{text-align:center}
.footer-qr-box{width:72px;height:72px;background:rgba(255,255,255,.08);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;margin-bottom:5px}
.footer-qr p{font-size:.7rem;color:#6b7280}

/* ===== 内页布局 ===== */
.page-content{padding:56px 0}
.content-grid{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
.main-content{}
.sidebar{}
.sidebar-card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:20px}
.sidebar-card h3{font-size:.95rem;font-weight:700;color:var(--dark);margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--red)}
.sidebar-list{display:flex;flex-direction:column;gap:8px}
.sidebar-list li a{font-size:.875rem;color:var(--text);display:flex;align-items:center;gap:6px;padding:6px 0;border-bottom:1px solid var(--gray);transition:color .2s}
.sidebar-list li a::before{content:'›';color:var(--red);font-weight:700}
.sidebar-list li a:hover{color:var(--red)}
.sidebar-list li{font-size:.875rem;color:var(--text);padding:4px 0;border-bottom:1px solid var(--gray)}

/* ===== 时间线 ===== */
.timeline{position:relative;padding-left:24px;border-left:2px solid var(--border)}
.timeline-item{margin-bottom:24px;position:relative}
.timeline-dot{position:absolute;left:-32px;top:4px;width:14px;height:14px;background:var(--red);border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 2px var(--red)}
.timeline-year{font-weight:700;color:var(--red);margin-bottom:4px;font-size:.9rem}
.timeline-text{color:var(--text);font-size:.875rem;line-height:1.7}

/* ===== 懒加载 ===== */
img[data-src]{opacity:0;transition:opacity .4s}
img.loaded{opacity:1}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-grid{grid-template-columns:repeat(2,1fr)}
  .partners-grid{grid-template-columns:repeat(4,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .content-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .hero-title{font-size:1.8rem}
  .section-title{font-size:1.5rem}
  .about-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:12px;border-bottom:2px solid var(--red);box-shadow:0 8px 24px rgba(0,0,0,.1)}
  .main-nav.open{display:flex}
  .hamburger{display:flex}
  .form-row{grid-template-columns:1fr}
  .partners-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .service-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .reviews-grid{grid-template-columns:1fr}
  .hero-btns{flex-direction:column}
  .hero-stats{gap:20px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .partners-grid{grid-template-columns:repeat(2,1fr)}
}