/* ========================================
   91修车改装 - 全新原创CSS样式
   配色方案：玛莎拉蒂总裁风格 深灰+银色+红色点缀
   ======================================== */
:root {
  --cr-primary: #1a1a2e;
  --cr-secondary: #c0c0c0;
  --cr-accent: #e63946;
  --cr-gold: #b8860b;
  --cr-dark: #0d0d1a;
  --cr-light: #f5f5f5;
  --cr-text: #2d2d3a;
  --cr-muted: #8a8a9a;
  --cr-card-bg: #ffffff;
  --cr-border: #e0e0e8;
  --cr-gradient-start: #1a1a2e;
  --cr-gradient-end: #16213e;
  --cr-shadow: rgba(26,26,46,0.12);
}
*, *::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: var(--cr-text); background: var(--cr-light); line-height: 1.7; }
a { color: var(--cr-accent); text-decoration: none; transition: color .3s; }
a:hover { color: var(--cr-gold); }
img { max-width: 100%; height: auto; display: block; }
.cr-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* === 顶部公告栏 === */
.cr-topbar { background: var(--cr-dark); color: var(--cr-secondary); font-size: 13px; padding: 6px 0; text-align: center; letter-spacing: 1px; }
.cr-topbar a { color: var(--cr-accent); }

/* === 导航栏 === */
.cr-header { background: var(--cr-primary); position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 20px var(--cr-shadow); }
.cr-nav { display: flex; align-items: center; justify-content: space-between; padding: 0 20px; max-width: 1200px; margin: 0 auto; height: 70px; }
.cr-logo { display: flex; align-items: center; gap: 10px; }
.cr-logo img { height: 42px; width: auto; border-radius: 6px; }
.cr-logo-text { color: #fff; font-size: 22px; font-weight: 700; letter-spacing: 2px; }
.cr-nav-menu { display: flex; list-style: none; gap: 0; }
.cr-nav-menu li a { color: #ccc; padding: 24px 18px; display: block; font-size: 15px; transition: all .3s; border-bottom: 3px solid transparent; }
.cr-nav-menu li a:hover, .cr-nav-menu li a.active { color: #fff; border-bottom-color: var(--cr-accent); }
.cr-mobile-toggle { display: none; color: #fff; font-size: 26px; cursor: pointer; background: none; border: none; }

/* === Hero Banner === */
.cr-hero { position: relative; height: 520px; overflow: hidden; display: flex; align-items: center; }
.cr-hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; filter: brightness(0.4); }
.cr-hero-content { position: relative; z-index: 2; color: #fff; max-width: 700px; padding: 0 40px; }
.cr-hero-content h1 { font-size: 42px; font-weight: 800; margin-bottom: 16px; text-shadow: 2px 2px 8px rgba(0,0,0,0.5); }
.cr-hero-content h2 { font-size: 20px; font-weight: 400; color: var(--cr-secondary); margin-bottom: 20px; }
.cr-hero-content p { font-size: 16px; color: #ddd; margin-bottom: 24px; line-height: 1.8; }
.cr-hero-badge { display: inline-block; background: var(--cr-accent); color: #fff; padding: 4px 14px; border-radius: 20px; font-size: 13px; margin-bottom: 12px; }
.cr-hero-btn { display: inline-block; background: var(--cr-accent); color: #fff; padding: 12px 36px; border-radius: 30px; font-size: 16px; font-weight: 600; transition: all .3s; }
.cr-hero-btn:hover { background: var(--cr-gold); color: #fff; transform: translateY(-2px); }

/* === 通用板块 === */
.cr-section { padding: 60px 0; }
.cr-section-alt { background: #fff; }
.cr-section-dark { background: var(--cr-primary); color: #fff; }
.cr-section-title { text-align: center; margin-bottom: 45px; }
.cr-section-title h2 { font-size: 30px; font-weight: 700; color: var(--cr-primary); margin-bottom: 10px; }
.cr-section-dark .cr-section-title h2 { color: #fff; }
.cr-section-title h3 { font-size: 15px; color: var(--cr-muted); font-weight: 400; }
.cr-section-title::after { content: ''; display: block; width: 60px; height: 3px; background: var(--cr-accent); margin: 14px auto 0; border-radius: 2px; }

/* === 今日推荐 === */
.cr-today { background: linear-gradient(135deg, var(--cr-gradient-start), var(--cr-gradient-end)); padding: 18px 0; text-align: center; color: #fff; }
.cr-today span { margin: 0 20px; font-size: 14px; }
.cr-today strong { color: var(--cr-accent); }

/* === 视频卡片网格 === */
.cr-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cr-video-card { background: var(--cr-card-bg); border-radius: 12px; overflow: hidden; box-shadow: 0 4px 16px var(--cr-shadow); transition: transform .3s, box-shadow .3s; }
.cr-video-card:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(26,26,46,0.18); }
.cr-video-thumb { position: relative; padding-top: 56.25%; overflow: hidden; }
.cr-video-thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.cr-video-card:hover .cr-video-thumb img { transform: scale(1.08); }
.cr-play-btn { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 56px; height: 56px; background: rgba(230,57,70,0.85); border-radius: 50%; display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity .3s; }
.cr-play-btn::after { content: ''; border-left: 18px solid #fff; border-top: 11px solid transparent; border-bottom: 11px solid transparent; margin-left: 4px; }
.cr-video-card:hover .cr-play-btn { opacity: 1; }
.cr-video-duration { position: absolute; bottom: 8px; right: 8px; background: rgba(0,0,0,0.75); color: #fff; padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.cr-video-info { padding: 16px; }
.cr-video-info h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; color: var(--cr-text); line-height: 1.4; }
.cr-video-info p { font-size: 13px; color: var(--cr-muted); }
.cr-video-meta { display: flex; justify-content: space-between; margin-top: 8px; font-size: 12px; color: var(--cr-muted); }
.cr-tag { display: inline-block; background: rgba(230,57,70,0.1); color: var(--cr-accent); padding: 2px 10px; border-radius: 12px; font-size: 12px; margin-right: 6px; }

/* === 服务模块 === */
.cr-services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.cr-service-card { background: #fff; border-radius: 12px; padding: 32px 24px; text-align: center; box-shadow: 0 4px 16px var(--cr-shadow); transition: all .3s; border-top: 4px solid transparent; }
.cr-service-card:hover { border-top-color: var(--cr-accent); transform: translateY(-4px); }
.cr-service-icon { font-size: 40px; margin-bottom: 16px; }
.cr-service-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--cr-primary); }
.cr-service-card p { font-size: 14px; color: var(--cr-muted); line-height: 1.7; }

/* === 娱乐专区 === */
.cr-entertain { background: linear-gradient(135deg, #0d0d1a 0%, #1a1a2e 100%); }
.cr-entertain .cr-section-title h2 { color: #fff; }
.cr-entertain .cr-section-title h3 { color: #aaa; }
.cr-entertain-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cr-entertain-card { background: rgba(255,255,255,0.06); border-radius: 12px; padding: 24px 16px; text-align: center; border: 1px solid rgba(255,255,255,0.08); transition: all .3s; }
.cr-entertain-card:hover { background: rgba(230,57,70,0.12); border-color: var(--cr-accent); }
.cr-entertain-card h4 { color: #fff; font-size: 16px; margin-bottom: 8px; }
.cr-entertain-card p { color: #aaa; font-size: 13px; }
.cr-entertain-icon { font-size: 36px; margin-bottom: 12px; }

/* === AI赋能 === */
.cr-ai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cr-ai-card { background: #fff; border-radius: 12px; padding: 28px; box-shadow: 0 4px 16px var(--cr-shadow); transition: all .3s; }
.cr-ai-card:hover { box-shadow: 0 8px 28px rgba(26,26,46,0.16); }
.cr-ai-card h4 { font-size: 17px; font-weight: 600; margin-bottom: 10px; color: var(--cr-primary); }
.cr-ai-card p { font-size: 14px; color: var(--cr-muted); line-height: 1.7; }

/* === 社区模块 === */
.cr-community-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cr-community-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 4px 16px var(--cr-shadow); transition: all .3s; }
.cr-community-card:hover { transform: translateY(-4px); }
.cr-community-card h4 { padding: 16px; font-size: 16px; color: var(--cr-primary); }
.cr-community-card p { padding: 0 16px 16px; font-size: 13px; color: var(--cr-muted); }

/* === 专家展示 === */
.cr-experts-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cr-expert-card { background: #fff; border-radius: 12px; overflow: hidden; text-align: center; box-shadow: 0 4px 16px var(--cr-shadow); transition: all .3s; }
.cr-expert-card:hover { transform: translateY(-4px); }
.cr-expert-card img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.cr-expert-card h4 { font-size: 16px; padding: 14px 12px 4px; color: var(--cr-primary); }
.cr-expert-card h5 { font-size: 13px; color: var(--cr-accent); font-weight: 500; padding: 0 12px; }
.cr-expert-card h6 { font-size: 12px; color: var(--cr-muted); font-weight: 400; padding: 6px 12px 14px; }

/* === 用户评价 === */
.cr-reviews-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.cr-review-card { background: #fff; border-radius: 12px; padding: 24px; box-shadow: 0 4px 16px var(--cr-shadow); border-left: 4px solid var(--cr-accent); }
.cr-review-card .cr-stars { color: var(--cr-gold); font-size: 14px; margin-bottom: 8px; }
.cr-review-card p { font-size: 14px; color: var(--cr-text); line-height: 1.7; margin-bottom: 10px; }
.cr-review-card .cr-reviewer { font-size: 13px; color: var(--cr-muted); }

/* === FAQ === */
.cr-faq-list { max-width: 800px; margin: 0 auto; }
.cr-faq-item { background: #fff; border-radius: 10px; margin-bottom: 12px; box-shadow: 0 2px 8px var(--cr-shadow); overflow: hidden; }
.cr-faq-q { padding: 18px 24px; font-size: 15px; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--cr-primary); transition: background .3s; }
.cr-faq-q:hover { background: rgba(230,57,70,0.04); }
.cr-faq-q::after { content: '+'; font-size: 22px; color: var(--cr-accent); transition: transform .3s; }
.cr-faq-item.active .cr-faq-q::after { transform: rotate(45deg); }
.cr-faq-a { padding: 0 24px; max-height: 0; overflow: hidden; transition: all .3s; }
.cr-faq-item.active .cr-faq-a { padding: 0 24px 18px; max-height: 300px; }
.cr-faq-a p { font-size: 14px; color: var(--cr-muted); line-height: 1.7; }

/* === 搜索框 === */
.cr-search { max-width: 500px; margin: 0 auto 40px; position: relative; }
.cr-search input { width: 100%; padding: 14px 50px 14px 20px; border: 2px solid var(--cr-border); border-radius: 30px; font-size: 15px; outline: none; transition: border-color .3s; }
.cr-search input:focus { border-color: var(--cr-accent); }
.cr-search button { position: absolute; right: 6px; top: 6px; background: var(--cr-accent); color: #fff; border: none; border-radius: 24px; padding: 8px 20px; cursor: pointer; font-size: 14px; }

/* === 二维码 === */
.cr-qr-section { display: flex; justify-content: center; gap: 60px; padding: 40px 0; }
.cr-qr-item { text-align: center; }
.cr-qr-item img { width: 140px; height: 140px; border-radius: 10px; margin-bottom: 10px; }
.cr-qr-item p { font-size: 13px; color: var(--cr-muted); }

/* === 页脚 === */
.cr-footer { background: var(--cr-dark); color: #aaa; padding: 50px 0 20px; }
.cr-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 30px; }
.cr-footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.cr-footer p, .cr-footer li { font-size: 13px; line-height: 2; }
.cr-footer ul { list-style: none; }
.cr-footer a { color: #aaa; }
.cr-footer a:hover { color: var(--cr-accent); }
.cr-footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px; text-align: center; font-size: 12px; color: #666; }
.cr-footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.cr-footer-logo img { height: 36px; border-radius: 6px; }
.cr-footer-logo span { color: #fff; font-size: 20px; font-weight: 700; }

/* === 面包屑 === */
.cr-breadcrumb { background: rgba(26,26,46,0.03); padding: 14px 0; font-size: 13px; }
.cr-breadcrumb a { color: var(--cr-muted); }
.cr-breadcrumb span { color: var(--cr-accent); }

/* === 内页通用 === */
.cr-page-hero { background: linear-gradient(135deg, var(--cr-gradient-start), var(--cr-gradient-end)); padding: 60px 0; text-align: center; color: #fff; }
.cr-page-hero h1 { font-size: 34px; font-weight: 700; margin-bottom: 10px; }
.cr-page-hero p { font-size: 15px; color: var(--cr-secondary); }
.cr-content { padding: 40px 0; }
.cr-content h2 { font-size: 24px; color: var(--cr-primary); margin: 30px 0 14px; }
.cr-content h3 { font-size: 20px; color: var(--cr-primary); margin: 24px 0 12px; }
.cr-content p { margin-bottom: 14px; line-height: 1.8; }

/* === 响应式 === */
@media (max-width: 1024px) {
  .cr-grid, .cr-services-grid, .cr-ai-grid, .cr-community-grid { grid-template-columns: repeat(2, 1fr); }
  .cr-experts-grid, .cr-entertain-grid { grid-template-columns: repeat(2, 1fr); }
  .cr-footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .cr-nav-menu { display: none; position: absolute; top: 70px; left: 0; right: 0; background: var(--cr-primary); flex-direction: column; padding: 10px 0; box-shadow: 0 4px 16px var(--cr-shadow); }
  .cr-nav-menu.active { display: flex; }
  .cr-nav-menu li a { padding: 14px 24px; border-bottom: none; }
  .cr-mobile-toggle { display: block; }
  .cr-hero { height: 400px; }
  .cr-hero-content h1 { font-size: 28px; }
  .cr-grid, .cr-services-grid, .cr-ai-grid, .cr-community-grid, .cr-reviews-grid { grid-template-columns: 1fr; }
  .cr-experts-grid, .cr-entertain-grid { grid-template-columns: repeat(2, 1fr); }
  .cr-footer-grid { grid-template-columns: 1fr; }
  .cr-qr-section { flex-direction: column; align-items: center; gap: 30px; }
  .cr-section { padding: 40px 0; }
  .cr-section-title h2 { font-size: 24px; }
}
@media (max-width: 480px) {
  .cr-experts-grid, .cr-entertain-grid { grid-template-columns: 1fr; }
  .cr-hero { height: 340px; }
  .cr-hero-content { padding: 0 20px; }
  .cr-hero-content h1 { font-size: 24px; }
}