/* ============================================
   老司机 - 原创样式表
   品牌色系：珊瑚粉 #FF6B6B / 品红 #E91E8C / 深靛 #1A1A2E / 暖金 #F5A623
   ============================================ */

/* CSS Reset & Base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;color:#2D2D3A;background:#FAFAFA;line-height:1.75;overflow-x:hidden}
a{color:#E91E8C;text-decoration:none;transition:color .3s}
a:hover{color:#FF6B6B}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;color:#1A1A2E;line-height:1.3}
h1{font-size:2.2rem}
h2{font-size:1.8rem}
h3{font-size:1.4rem}
h4{font-size:1.2rem}
h5{font-size:1.05rem}
h6{font-size:.95rem}
p{margin-bottom:1rem}

/* Container */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ============ Header ============ */
.site-header{background:linear-gradient(135deg,#1A1A2E 0%,#16213E 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 20px rgba(0,0,0,.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1200px;margin:0 auto}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-wrap .brand-text{color:#fff;font-size:1.3rem;font-weight:700;letter-spacing:1px}

/* Navigation */
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{color:#E0E0E0;padding:12px 16px;font-size:.95rem;transition:all .3s;position:relative;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#FF6B6B;background:rgba(255,107,107,.08);border-radius:6px}
.main-nav a::after{content:'';position:absolute;bottom:4px;left:50%;transform:translateX(-50%);width:0;height:2px;background:linear-gradient(90deg,#FF6B6B,#E91E8C);transition:width .3s;border-radius:2px}
.main-nav a:hover::after,.main-nav a.active::after{width:60%}

/* Mobile Menu Toggle */
.menu-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:8px}

/* Search Bar */
.search-bar{background:linear-gradient(90deg,#16213E,#1A1A2E);padding:12px 0;border-bottom:1px solid rgba(255,255,255,.05)}
.search-bar .container{display:flex;align-items:center;justify-content:center;gap:10px}
.search-bar .breadcrumb{color:#999;font-size:.85rem;flex:1}
.search-bar .breadcrumb a{color:#aaa}
.search-bar .breadcrumb span{color:#FF6B6B}
.search-input-wrap{display:flex;max-width:520px;width:100%}
.search-input-wrap input{flex:1;padding:10px 18px;border:2px solid rgba(233,30,140,.3);border-right:none;border-radius:25px 0 0 25px;background:rgba(255,255,255,.08);color:#fff;font-size:.95rem;outline:none;transition:border-color .3s}
.search-input-wrap input::placeholder{color:#888}
.search-input-wrap input:focus{border-color:#E91E8C}
.search-input-wrap button{padding:10px 24px;background:linear-gradient(135deg,#FF6B6B,#E91E8C);color:#fff;border:none;border-radius:0 25px 25px 0;cursor:pointer;font-size:.95rem;transition:opacity .3s;white-space:nowrap}
.search-input-wrap button:hover{opacity:.85}

/* ============ Hero Section ============ */
.hero-section{position:relative;height:520px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.hero-section .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.55)}
.hero-section .hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(26,26,46,.3) 0%,rgba(26,26,46,.85) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;color:#fff;padding:20px}
.hero-content h1{font-size:2.8rem;margin-bottom:12px;text-shadow:0 2px 10px rgba(0,0,0,.3)}
.hero-content h1 .highlight{color:#FF6B6B;background:linear-gradient(90deg,#FF6B6B,#E91E8C);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-content .subtitle{font-size:1.2rem;color:#ccc;margin-bottom:24px}
.hero-content .hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.hero-content .hero-tags a{display:inline-block;padding:8px 20px;background:rgba(255,255,255,.1);border:1px solid rgba(255,107,107,.4);border-radius:25px;color:#fff;font-size:.9rem;transition:all .3s;backdrop-filter:blur(5px)}
.hero-content .hero-tags a:hover{background:linear-gradient(135deg,#FF6B6B,#E91E8C);border-color:transparent}

/* ============ Section Common ============ */
.section{padding:50px 0}
.section-alt{background:#fff}
.section-dark{background:linear-gradient(135deg,#1A1A2E,#16213E);color:#fff}
.section-dark h2,.section-dark h3,.section-dark h4{color:#fff}
.section-header{text-align:center;margin-bottom:40px}
.section-header h2{margin-bottom:8px;position:relative;display:inline-block}
.section-header h2::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,#FF6B6B,#E91E8C);margin:10px auto 0;border-radius:3px}
.section-header p{color:#777;font-size:1rem;max-width:600px;margin:0 auto}
.section-dark .section-header p{color:#aaa}

/* ============ Video Card Grid ============ */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:all .35s;cursor:pointer;position:relative}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(233,30,140,.12)}
.video-card .thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .thumb img{transform:scale(1.08)}
.video-card .play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(233,30,140,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .35s;backdrop-filter:blur(4px)}
.video-card:hover .play-btn{opacity:1}
.video-card .play-btn::after{content:'';display:block;width:0;height:0;border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}
.video-card .duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-card .card-body{padding:14px 16px}
.video-card .card-body h3{font-size:.95rem;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}
.video-card .card-meta{display:flex;align-items:center;justify-content:space-between;color:#999;font-size:.8rem}
.video-card .card-meta .views{display:flex;align-items:center;gap:4px}
.video-card .card-meta .likes{display:flex;align-items:center;gap:4px}
.video-card .tag-label{position:absolute;top:10px;left:10px;background:linear-gradient(135deg,#FF6B6B,#E91E8C);color:#fff;padding:3px 10px;border-radius:4px;font-size:.75rem;font-weight:600}

/* ============ Category Tabs ============ */
.category-tabs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:30px}
.category-tabs .tab{padding:8px 22px;border:2px solid #eee;border-radius:25px;color:#666;font-size:.9rem;cursor:pointer;transition:all .3s}
.category-tabs .tab:hover,.category-tabs .tab.active{border-color:#E91E8C;color:#E91E8C;background:rgba(233,30,140,.05)}

/* ============ Expert Cards ============ */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:14px;padding:30px 20px;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:all .35s}
.expert-card:hover{transform:translateY(-5px);box-shadow:0 12px 30px rgba(233,30,140,.1)}
.expert-card .avatar{width:90px;height:90px;border-radius:50%;margin:0 auto 14px;overflow:hidden;border:3px solid #FF6B6B}
.expert-card .avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{margin-bottom:4px}
.expert-card .role{color:#E91E8C;font-size:.85rem;margin-bottom:10px}
.expert-card .desc{color:#777;font-size:.85rem;margin-bottom:14px;line-height:1.6}
.expert-card .btn-group{display:flex;gap:8px;justify-content:center}

/* ============ Buttons ============ */
.btn{display:inline-block;padding:10px 24px;border-radius:25px;font-size:.9rem;font-weight:600;transition:all .3s;cursor:pointer;border:none;text-align:center}
.btn-primary{background:linear-gradient(135deg,#FF6B6B,#E91E8C);color:#fff}
.btn-primary:hover{opacity:.85;transform:translateY(-2px);color:#fff}
.btn-outline{border:2px solid #E91E8C;color:#E91E8C;background:transparent}
.btn-outline:hover{background:#E91E8C;color:#fff}
.btn-sm{padding:7px 16px;font-size:.82rem}
.btn-dark{background:linear-gradient(135deg,#1A1A2E,#16213E);color:#fff}

/* ============ FAQ Section ============ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid #eee;border-radius:10px;margin-bottom:12px;overflow:hidden;transition:all .3s}
.faq-item:hover{border-color:rgba(233,30,140,.3)}
.faq-item .faq-q{padding:16px 20px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;background:#fff;transition:background .3s}
.faq-item .faq-q:hover{background:rgba(233,30,140,.03)}
.faq-item .faq-q .icon{font-size:1.2rem;color:#E91E8C;transition:transform .3s}
.faq-item.open .faq-q .icon{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:all .4s;color:#666;line-height:1.8}
.faq-item.open .faq-a{padding:0 20px 16px;max-height:500px}

/* ============ Reviews ============ */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 16px rgba(0,0,0,.05);border-left:4px solid #FF6B6B}
.review-card .review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-card .review-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF6B6B,#E91E8C);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem}
.review-card .review-info h5{margin-bottom:2px}
.review-card .review-info .stars{color:#F5A623;font-size:.9rem}
.review-card .review-text{color:#555;font-size:.92rem;line-height:1.7}
.review-card .review-date{color:#aaa;font-size:.8rem;margin-top:8px}

/* ============ Partners ============ */
.partner-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.partner-wall .partner-item{background:#fff;border-radius:10px;padding:16px 28px;box-shadow:0 2px 12px rgba(0,0,0,.05);font-weight:600;color:#1A1A2E;font-size:.95rem;transition:all .3s;border:1px solid #eee}
.partner-wall .partner-item:hover{border-color:#E91E8C;box-shadow:0 4px 20px rgba(233,30,140,.1)}

/* ============ Contact Info ============ */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{background:#fff;border-radius:12px;padding:28px;text-align:center;box-shadow:0 4px 16px rgba(0,0,0,.05)}
.contact-card .icon-circle{width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,#FF6B6B,#E91E8C);display:flex;align-items:center;justify-content:center;margin:0 auto 14px;color:#fff;font-size:1.4rem}
.contact-card h4{margin-bottom:8px}
.contact-card p{color:#666;font-size:.9rem}

/* ============ How-To Guide ============ */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.howto-step{background:#fff;border-radius:12px;padding:24px 20px;text-align:center;box-shadow:0 4px 16px rgba(0,0,0,.05);position:relative;counter-increment:step}
.howto-step::before{content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:32px;height:32px;background:linear-gradient(135deg,#FF6B6B,#E91E8C);border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem}
.howto-step h4{margin-top:8px;margin-bottom:8px}
.howto-step p{color:#666;font-size:.88rem}

/* ============ Social Share ============ */
.social-share{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.social-share a{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:25px;color:#fff;font-size:.88rem;transition:all .3s}
.social-share a:hover{transform:translateY(-2px);opacity:.9;color:#fff}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}

/* ============ Footer ============ */
.site-footer{background:linear-gradient(135deg,#0F0F1A,#1A1A2E);color:#aaa;padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:40px}
.footer-col h4{color:#fff;margin-bottom:16px;font-size:1rem}
.footer-col p{font-size:.88rem;line-height:1.7;margin-bottom:8px}
.footer-col a{color:#aaa;display:block;padding:3px 0;font-size:.88rem;transition:color .3s}
.footer-col a:hover{color:#FF6B6B}
.footer-col .footer-logo{height:36px;margin-bottom:12px}
.footer-qr{display:flex;gap:16px;margin-top:12px}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:100px;height:100px;border-radius:8px;border:2px solid rgba(255,255,255,.1)}
.footer-qr .qr-item span{display:block;font-size:.75rem;margin-top:4px;color:#888}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:.82rem}
.footer-bottom a{color:#FF6B6B}

/* ============ Inner Page ============ */
.page-banner{background:linear-gradient(135deg,#1A1A2E,#16213E);padding:50px 0 40px;text-align:center;color:#fff}
.page-banner h1{font-size:2rem;margin-bottom:8px;color:#fff}
.page-banner .breadcrumb{color:#999;font-size:.88rem}
.page-banner .breadcrumb a{color:#aaa}
.page-banner .breadcrumb span{color:#FF6B6B}
.page-content{padding:40px 0}
.page-content p{color:#555;line-height:1.9}
.page-content h2{margin-bottom:16px;margin-top:30px}
.page-content h3{margin-bottom:12px;margin-top:24px}

/* ============ Sidebar ============ */
.content-with-sidebar{display:grid;grid-template-columns:1fr 300px;gap:30px}
.sidebar .widget{background:#fff;border-radius:12px;padding:20px;margin-bottom:20px;box-shadow:0 4px 16px rgba(0,0,0,.05)}
.sidebar .widget h4{margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid #FF6B6B}
.sidebar .widget a{display:block;padding:8px 0;color:#555;font-size:.9rem;border-bottom:1px solid #f5f5f5;transition:color .3s}
.sidebar .widget a:hover{color:#E91E8C}
.sidebar .widget .hot-tag{display:inline-block;padding:5px 12px;margin:4px;border-radius:15px;background:#f5f5f5;color:#666;font-size:.82rem;transition:all .3s}
.sidebar .widget .hot-tag:hover{background:#E91E8C;color:#fff}

/* ============ Pagination ============ */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:30px}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:8px;border:1px solid #eee;color:#666;font-size:.9rem;transition:all .3s}
.pagination a:hover,.pagination span.current{background:linear-gradient(135deg,#FF6B6B,#E91E8C);color:#fff;border-color:transparent}

/* ============ Loading Animation ============ */
.lazy-img{opacity:0;transition:opacity .6s}
.lazy-img.loaded{opacity:1}

/* ============ Scroll to Top ============ */
.scroll-top{position:fixed;bottom:30px;right:30px;width:46px;height:46px;background:linear-gradient(135deg,#FF6B6B,#E91E8C);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;cursor:pointer;opacity:0;visibility:hidden;transition:all .3s;z-index:999;box-shadow:0 4px 15px rgba(233,30,140,.3)}
.scroll-top.visible{opacity:1;visibility:visible}
.scroll-top:hover{transform:translateY(-3px)}

/* ============ Responsive ============ */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:repeat(2,1fr)}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .content-with-sidebar{grid-template-columns:1fr}
}
@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .main-nav{display:none;flex-direction:column;width:100%;background:#1A1A2E;position:absolute;top:100%;left:0;padding:10px 0;box-shadow:0 10px 20px rgba(0,0,0,.2)}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 20px;border-bottom:1px solid rgba(255,255,255,.05)}
  .menu-toggle{display:block}
  .video-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .hero-section{height:400px}
  .hero-content h1{font-size:1.8rem}
  .review-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .search-input-wrap{max-width:100%}
  .search-bar .breadcrumb{display:none}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  h1{font-size:1.6rem}
  h2{font-size:1.4rem}
  .hero-section{height:320px}
  .howto-steps{grid-template-columns:1fr}
}