/* ============================================
   91修车改装 - 原创样式表
   配色方案：深碳灰 + 赤红 + 钢银
   ============================================ */
:root{--bg-primary:#0f1114;--bg-secondary:#1a1d23;--bg-card:#22262e;--bg-hover:#2c3038;--accent:#c0392b;--accent-light:#e74c3c;--accent-dark:#962d22;--silver:#b0b8c4;--gold:#d4a017;--text-primary:#e8eaed;--text-secondary:#9aa0a8;--text-muted:#6b7280;--border:#2e333b;--radius:10px;--shadow:0 4px 20px rgba(0,0,0,.4);--transition:all .3s ease}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.7;overflow-x:hidden}
a{color:var(--accent-light);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--gold)}
img{max-width:100%;height:auto;display:block}
.container{max-width:1280px;margin:0 auto;padding:0 20px}

/* === 顶部导航 === */
.top-bar{background:var(--bg-secondary);border-bottom:1px solid var(--border);padding:6px 0;font-size:13px;color:var(--text-muted)}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap}
.top-bar a{color:var(--text-muted);margin:0 8px}
.top-bar a:hover{color:var(--accent-light)}
header{background:linear-gradient(180deg,#12141a 0%,#0f1114 100%);position:sticky;top:0;z-index:1000;border-bottom:2px solid var(--accent)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.logo-area{display:flex;align-items:center;gap:12px}
.logo-area img{height:48px;width:auto}
.logo-area h1{font-size:22px;color:var(--text-primary);font-weight:700}
.logo-area h1 span{color:var(--accent-light)}
nav{display:flex;align-items:center;gap:4px}
nav a{color:var(--text-secondary);padding:8px 14px;border-radius:6px;font-size:14px;font-weight:500;transition:var(--transition)}
nav a:hover,nav a.active{color:#fff;background:var(--accent)}
.mobile-menu-btn{display:none;background:none;border:none;color:var(--text-primary);font-size:24px;cursor:pointer}

/* === 搜索框 === */
.search-bar{background:var(--bg-secondary);padding:14px 0;border-bottom:1px solid var(--border)}
.search-wrap{display:flex;max-width:680px;margin:0 auto}
.search-wrap input{flex:1;padding:10px 18px;background:var(--bg-card);border:1px solid var(--border);border-right:none;border-radius:var(--radius) 0 0 var(--radius);color:var(--text-primary);font-size:15px;outline:none;transition:var(--transition)}
.search-wrap input:focus{border-color:var(--accent)}
.search-wrap input::placeholder{color:var(--text-muted)}
.search-wrap button{padding:10px 28px;background:var(--accent);color:#fff;border:none;border-radius:0 var(--radius) var(--radius) 0;cursor:pointer;font-size:15px;font-weight:600;transition:var(--transition)}
.search-wrap button:hover{background:var(--accent-light)}

/* === Hero Banner === */
.hero{position:relative;height:520px;overflow:hidden;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.45)}
.hero-content{position:relative;z-index:2;text-align:center;width:100%;padding:0 20px}
.hero-content h2{font-size:42px;font-weight:800;margin-bottom:16px;text-shadow:2px 2px 8px rgba(0,0,0,.6)}
.hero-content h2 .hl{color:var(--accent-light)}
.hero-content p{font-size:18px;color:var(--silver);max-width:700px;margin:0 auto 28px;text-shadow:1px 1px 4px rgba(0,0,0,.5)}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 30px;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;transition:var(--transition);border:none}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-light);color:#fff;transform:translateY(-2px);box-shadow:0 6px 20px rgba(192,57,43,.4)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.3)}
.btn-outline:hover{border-color:var(--accent-light);color:var(--accent-light)}

/* === 快讯滚动条 === */
.news-ticker-wrap{background:var(--accent-dark);padding:8px 0;overflow:hidden}
.news-ticker-inner{display:flex;align-items:center;gap:12px}
.news-ticker-label{background:var(--gold);color:#111;padding:3px 12px;border-radius:4px;font-size:12px;font-weight:700;white-space:nowrap}
.news-ticker-content{overflow:hidden;flex:1;position:relative;height:22px}
.news-ticker-list{display:flex;position:absolute;animation:tickerScroll 30s linear infinite;white-space:nowrap}
.news-ticker-list span{margin-right:60px;font-size:13px;color:rgba(255,255,255,.85)}
@keyframes tickerScroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* === 通用区块 === */
.section{padding:60px 0}
.section-header{text-align:center;margin-bottom:40px}
.section-header h2{font-size:30px;font-weight:700;margin-bottom:10px}
.section-header h2 .hl{color:var(--accent-light)}
.section-header p{color:var(--text-secondary);font-size:15px;max-width:600px;margin:0 auto}
.section-alt{background:var(--bg-secondary)}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;transition:var(--transition);border:1px solid var(--border)}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--accent)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.45);opacity:0;transition:opacity .3s ease}
.video-card:hover .play-btn{opacity:1}
.play-btn span{width:56px;height:56px;background:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;box-shadow:0 4px 16px rgba(192,57,43,.5);transition:transform .2s}
.play-btn span:hover{transform:scale(1.15)}
.video-info{padding:14px}
.video-info h3{font-size:15px;font-weight:600;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:12px;font-size:12px;color:var(--text-muted)}
.video-meta span{display:flex;align-items:center;gap:3px}
.video-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.video-tags span{background:var(--bg-hover);color:var(--text-secondary);padding:2px 8px;border-radius:4px;font-size:11px}

/* === 服务模块 === */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:var(--bg-card);border-radius:var(--radius);padding:30px 24px;text-align:center;border:1px solid var(--border);transition:var(--transition)}
.service-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow)}
.service-icon{width:64px;height:64px;margin:0 auto 16px;background:linear-gradient(135deg,var(--accent),var(--accent-dark));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;color:#fff}
.service-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.service-card p{font-size:13px;color:var(--text-secondary);line-height:1.6}

/* === 专家团队 === */
.expert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.expert-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);transition:var(--transition)}
.expert-card:hover{border-color:var(--accent);box-shadow:var(--shadow)}
.expert-avatar{width:100%;aspect-ratio:1;overflow:hidden}
.expert-avatar img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.expert-card:hover .expert-avatar img{transform:scale(1.05)}
.expert-info{padding:16px}
.expert-info h3{font-size:16px;font-weight:600;margin-bottom:4px}
.expert-info .title{color:var(--accent-light);font-size:13px;margin-bottom:8px}
.expert-info .creds{font-size:12px;color:var(--text-muted);line-height:1.6;margin-bottom:10px}
.expert-btns{display:flex;gap:8px}
.expert-btns a{flex:1;text-align:center;padding:6px 0;border-radius:6px;font-size:12px;font-weight:600}
.expert-btns .btn-contact{background:var(--accent);color:#fff}
.expert-btns .btn-works{background:var(--bg-hover);color:var(--text-secondary)}

/* === 合作品牌墙 === */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:20px;padding:20px 0}
.brand-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 28px;font-size:15px;font-weight:600;color:var(--text-secondary);transition:var(--transition)}
.brand-item:hover{border-color:var(--accent);color:var(--accent-light)}

/* === How-To 步骤 === */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-card{background:var(--bg-card);border-radius:var(--radius);padding:24px;text-align:center;border:1px solid var(--border);position:relative}
.step-num{width:40px;height:40px;background:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff;margin:0 auto 14px}
.step-card h4{font-size:15px;font-weight:600;margin-bottom:8px}
.step-card p{font-size:13px;color:var(--text-secondary)}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-q{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:15px;transition:var(--transition)}
.faq-q:hover{color:var(--accent-light)}
.faq-q .arrow{transition:transform .3s;font-size:18px}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-item.open .faq-a{max-height:300px}
.faq-a-inner{padding:0 20px 16px;color:var(--text-secondary);font-size:14px;line-height:1.7}

/* === 用户评价 === */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:var(--transition)}
.review-card:hover{border-color:var(--accent)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff}
.review-name{font-weight:600;font-size:14px}
.review-date{font-size:12px;color:var(--text-muted)}
.review-stars{color:var(--gold);font-size:13px;margin-bottom:8px}
.review-text{font-size:14px;color:var(--text-secondary);line-height:1.7}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-info-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.contact-info-card h3{font-size:18px;font-weight:600;margin-bottom:16px;color:var(--accent-light)}
.contact-row{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px;font-size:14px;color:var(--text-secondary)}
.contact-row .label{font-weight:600;color:var(--text-primary);min-width:80px}
.qr-grid{display:flex;gap:20px;margin-top:16px}
.qr-item{text-align:center}
.qr-item img{width:120px;height:120px;border-radius:8px;border:1px solid var(--border)}
.qr-item p{font-size:12px;color:var(--text-muted);margin-top:6px}

/* === 分享按钮 === */
.share-bar{background:var(--bg-secondary);padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.share-inner{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}
.share-inner span{color:var(--text-secondary);font-size:14px}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:20px;font-size:13px;font-weight:600;border:1px solid var(--border);color:var(--text-secondary);background:var(--bg-card);cursor:pointer;transition:var(--transition)}
.share-btn:hover{border-color:var(--accent);color:var(--accent-light)}

/* === 页脚 === */
footer{background:var(--bg-secondary);border-top:2px solid var(--accent);padding:40px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-brand p{color:var(--text-secondary);font-size:13px;line-height:1.7;margin-top:12px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:14px;color:var(--text-primary)}
.footer-col a{display:block;color:var(--text-muted);font-size:13px;margin-bottom:8px;transition:var(--transition)}
.footer-col a:hover{color:var(--accent-light);padding-left:4px}
.footer-bottom{border-top:1px solid var(--border);padding:16px 0;text-align:center;font-size:13px;color:var(--text-muted)}
.footer-bottom a{color:var(--text-muted);margin:0 8px}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:13px;color:var(--text-muted)}
.breadcrumb a{color:var(--text-secondary)}
.breadcrumb a:hover{color:var(--accent-light)}
.breadcrumb span{margin:0 6px}

/* === 更新通知 === */
.update-notice{background:var(--bg-card);border-left:3px solid var(--accent);padding:10px 16px;margin-bottom:20px;font-size:13px;color:var(--text-secondary);border-radius:0 var(--radius) var(--radius) 0}

/* === 响应式 === */
@media(max-width:1024px){
.video-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:1fr 1fr}
.steps-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
.header-inner{flex-wrap:wrap}
nav{display:none;width:100%;flex-direction:column;padding:10px 0}
nav.show{display:flex}
.mobile-menu-btn{display:block}
.hero{height:380px}
.hero-content h2{font-size:28px}
.video-grid{grid-template-columns:repeat(2,1fr)}
.service-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr}
.review-grid{grid-template-columns:1fr}
.contact-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.steps-grid{grid-template-columns:1fr}
.section{padding:40px 0}
.section-header h2{font-size:24px}
}
@media(max-width:480px){
.video-grid{grid-template-columns:1fr}
.hero{height:300px}
.hero-content h2{font-size:22px}
.logo-area h1{font-size:18px}
}