* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft Yahei", "PingFang SC", sans-serif;
        }
        :root {
            --primary: #0a2463;
            --accent: #c9a962;
            --dark: #1a1a1a;
            --gray: #666;
            --light: #f8f9fa;
            --white: #ffffff;
            --border: #e5e7eb;
        }
        body {
            color: var(--dark);
            background: var(--white);
            line-height: 1.7;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 头部导航 */
        header {
            background: rgba(255,255,255,0.98);
            box-shadow: 0 2px 12px rgba(0,0,0,0.06);
            position: sticky;
            top: 0;
            z-index: 999;
            backdrop-filter: blur(10px);
        }
        .nav-wrap {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 75px;
        }
        .logo {
            font-size: 24px;
            font-weight: bold;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: 1px;
        }
        .logo span {
            color: var(--accent);
        }
        .nav-menu {
            display: flex;
            gap: 35px;
            align-items: center;
        }
        .nav-menu a {
            text-decoration: none;
            color: var(--dark);
            font-size: 15px;
            transition: color 0.3s;
            position: relative;
        }
        .nav-menu a:hover {
            color: var(--primary);
        }
        .nav-btn {
            background: var(--primary);
            color: #fff !important;
            padding: 8px 22px;
            border-radius: 25px;
            transition: all 0.3s !important;
        }
        .nav-btn:hover {
            background: var(--accent);
            transform: translateY(-1px);
        }
        .mobile-menu {
            display: none;
            font-size: 26px;
            cursor: pointer;
            color: var(--primary);
        }

        /* 首屏Banner */
        .banner {
            background: linear-gradient(rgba(10,36,99,0.85), rgba(10,36,99,0.8)), url('https://images.unsplash.com/photo-1492144534655-ae79c964c967?w=1920') center/cover;
            color: #fff;
            padding: 130px 0;
            text-align: center;
        }
        .banner h1 {
            font-size: 48px;
            margin-bottom: 18px;
            letter-spacing: 2px;
        }
        .banner h1 em {
            color: var(--accent);
            font-style: normal;
        }
        .banner p {
            font-size: 18px;
            opacity: 0.9;
            max-width: 750px;
            margin: 0 auto 35px;
        }
        .banner-btns {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-block;
            padding: 13px 38px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: bold;
            font-size: 16px;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--dark);
        }
        .btn-primary:hover {
            background: #dbb870;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(201,169,98,0.3);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.6);
        }
        .btn-outline:hover {
            background: #fff;
            color: var(--primary);
        }

        /* 通用区块 */
        .section {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 55px;
        }
        .section-title h2 {
            font-size: 34px;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-title p {
            color: var(--gray);
            font-size: 16px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        /* 核心优势 */
        .advantage {
            background: var(--light);
        }
        .adv-card {
            background: #fff;
            padding: 35px 25px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.04);
            transition: all 0.3s;
            border-top: 3px solid var(--primary);
        }
        .adv-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 10px 30px rgba(10,36,99,0.1);
        }
        .adv-card h3 {
            font-size: 18px;
            color: var(--primary);
            margin: 15px 0 10px;
        }
        .adv-card p {
            font-size: 14px;
            color: var(--gray);
        }

        /* 合作品牌 */
        .brand-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
        }
        .brand-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 25px 15px;
            text-align: center;
            font-weight: bold;
            color: var(--dark);
            transition: all 0.3s;
            font-size: 16px;
        }
        .brand-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-3px);
        }

        /* 热门车型 */
        .car-card {
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.06);
            transition: all 0.3s;
        }
        .car-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.1);
        }
        .car-img {
            width: 100%;
            height: 200px;
            background: var(--light);
            overflow: hidden;
        }
        .car-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .car-card:hover .car-img img {
            transform: scale(1.05);
        }
        .car-body {
            padding: 22px;
        }
        .car-tag {
            display: inline-block;
            background: rgba(10,36,99,0.1);
            color: var(--primary);
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 12px;
            margin-bottom: 10px;
        }
        .car-body h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .car-price {
            color: var(--accent);
            font-size: 22px;
            font-weight: bold;
            margin: 12px 0;
        }
        .car-price span {
            font-size: 13px;
            color: var(--gray);
            font-weight: normal;
        }
        .car-points {
            list-style: none;
            margin-bottom: 18px;
        }
        .car-points li {
            font-size: 13px;
            color: var(--gray);
            padding: 3px 0;
            padding-left: 16px;
            position: relative;
        }
        .car-points li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
        }
        .car-btn {
            display: block;
            text-align: center;
            padding: 10px;
            background: var(--primary);
            color: #fff;
            text-decoration: none;
            border-radius: 8px;
            font-size: 14px;
            font-weight: bold;
            transition: background 0.3s;
        }
        .car-btn:hover {
            background: var(--accent);
            color: var(--dark);
        }

        /* 购车服务 */
        .service-card {
            text-align: center;
            padding: 30px 20px;
            border: 1px solid var(--border);
            border-radius: 12px;
            transition: all 0.3s;
        }
        .service-card:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(10,36,99,0.08);
        }
        .service-card h4 {
            font-size: 18px;
            color: var(--primary);
            margin: 12px 0 8px;
        }
        .service-card p {
            font-size: 14px;
            color: var(--gray);
        }

        /* 门店网络 */
        .store-section {
            background: var(--light);
        }
        .store-data {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
            margin-bottom: 40px;
        }
        .store-data-item h4 {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 5px;
        }
        .store-data-item p {
            color: var(--gray);
            font-size: 15px;
        }
        .store-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .store-item {
            background: #fff;
            padding: 22px;
            border-radius: 10px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.04);
        }
        .store-item h5 {
            font-size: 16px;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .store-item p {
            font-size: 13px;
            color: var(--gray);
        }

        /* FAQ 常见问题 - 默认全部展开显示 */
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 10px;
            margin-bottom: 15px;
            overflow: hidden;
        }
        .faq-title {
            padding: 18px 25px;
            font-weight: bold;
            background: var(--light);
            color: var(--primary);
        }
        .faq-body {
            padding: 18px 25px 22px;
            color: var(--gray);
            font-size: 15px;
            line-height: 1.8;
            display: block;
        }

        /* 咨询CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #153a8a 100%);
            color: #fff;
            text-align: center;
            padding: 70px 0;
        }
        .cta-section h2 {
            font-size: 32px;
            margin-bottom: 15px;
        }
        .cta-section p {
            max-width: 700px;
            margin: 0 auto 30px;
            opacity: 0.9;
            font-size: 17px;
        }
        .cta-phone {
            font-size: 28px;
            font-weight: bold;
            color: var(--accent);
            margin-bottom: 20px;
        }

        /* 底部 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 50px 0 25px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 35px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 20px;
        }
        .footer-col p, .footer-col a {
            font-size: 14px;
            color: #94a3b8;
            text-decoration: none;
            line-height: 2;
            display: block;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid #1e293b;
            font-size: 13px;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .grid-4, .store-data, .brand-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3, .store-list, .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .banner h1 {
                font-size: 36px;
            }
            .section-title h2 {
                font-size: 28px;
            }
        }
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            .mobile-menu {
                display: block;
            }
            .grid-3, .grid-4, .store-data, .store-list, .brand-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .banner {
                padding: 80px 0;
            }
            .banner h1 {
                font-size: 28px;
            }
            .section {
                padding: 50px 0;
            }
            .section-title h2 {
                font-size: 24px;
            }
        }