/* 固定头部 - Logo和导航 */
#fixed-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    max-width: 1200px;
    margin: 0 auto;
    height: 60px;
}
.logo-section .logo-text {
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    text-decoration: none;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    transition: all 0.3s;
    letter-spacing: 1px;
    white-space: nowrap;
}
.logo-text:hover {
    color: #00bcd4;
    text-shadow: 0 0 10px rgba(0,188,212,0.5);
}
.logo-text::before {
    content: "🚗";
    margin-right: 8px;
}
/* 主导航 */
.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}
.main-nav li {
    position: relative;
}
.main-nav li a {
    display: block;
    padding: 20px 18px;
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: all 0.3s;
    position: relative;
}
.main-nav li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: #00bcd4;
    transition: all 0.3s;
    transform: translateX(-50%);
}
.main-nav li a:hover::after,
.main-nav li.active a::after {
    width: 80%;
}
.main-nav li a:hover,
.main-nav li.active a {
    color: #00bcd4;
}
/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    cursor: pointer;
}
.mobile-menu-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    background: #fff;
    border-radius: 3px;
    transition: all 0.3s;
}
/* 顶部联系方式栏 - 固定在导航下方 */
.top-contact-bar {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    z-index: 999;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 8px 0;
    font-size: 13px;
    color: #fff;
    border-bottom: 2px solid #00bcd4;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
}
.top-contact-bar .contact-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
}
.top-contact-bar .contact-left,
.top-contact-bar .contact-right {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}
.top-contact-bar a { color: #fff; text-decoration: none; transition: all 0.3s; }
.top-contact-bar a:hover { color: #00bcd4; text-shadow: 0 0 8px rgba(0,188,212,0.5); }
.top-contact-bar .contact-item {
    display: inline-flex;
    align-items: center;
    padding: 2px 0;
    white-space: nowrap;
}
.top-contact-bar .contact-item i {
    margin-right: 6px;
    color: #00bcd4;
    font-size: 14px;
}
.top-contact-bar .contact-divider {
    display: inline-block;
    width: 1px;
    height: 14px;
    background: rgba(255,255,255,0.2);
    margin: 0 12px;
}
.top-contact-bar .social-links { display: inline-flex; align-items: center; margin-left: 15px; }
.top-contact-bar .social-links a {
    margin-left: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(0,188,212,0.15);
    transition: all 0.3s;
}
.top-contact-bar .social-links a i { margin-right: 0; font-size: 14px; }
.top-contact-bar .social-links a:hover {
    background: #00bcd4;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,188,212,0.4);
}
/* 页面内容偏移 */
.main-wrapper {
    padding-top: 100px;
}

/* Hero Banner */
.hero-banner {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
}
.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1s ease;
}
.hero-slide.active {
    opacity: 1;
}
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-content {
    text-align: center;
    color: #fff;
    padding: 0 20px;
    max-width: 800px;
}
.hero-content h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
    line-height: 1.3;
}
.hero-subtitle {
    font-size: 18px;
    margin-bottom: 15px;
    opacity: 0.95;
}
.hero-desc {
    font-size: 14px;
    margin-bottom: 30px;
    opacity: 0.85;
}
.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}
.hero-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}
.hero-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s;
}
.hero-dots .dot.active {
    background: #00bcd4;
    transform: scale(1.2);
}
.hero-arrows {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 10;
    pointer-events: none;
}
.hero-arrow {
    width: 50px;
    height: 50px;
    background: rgba(0,0,0,0.4);
    color: #fff;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 50%;
    transition: all 0.3s;
    pointer-events: auto;
    user-select: none;
}
.hero-arrow:hover {
    background: rgba(0,188,212,0.6);
}
.tp-banner-container {
    margin-top: 0;
}
/* 服务卡片优化 */
.service-card {
    padding: 35px 25px;
    text-align: center;
    border: none;
    border-radius: 15px;
    margin-bottom: 30px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    background: #fff;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #00bcd4, #0097a7);
    transform: scaleX(0);
    transition: transform 0.4s;
}
.service-card:hover::before {
    transform: scaleX(1);
}
.service-card:hover {
    box-shadow: 0 15px 40px rgba(0,188,212,0.2);
    transform: translateY(-10px);
}
.service-card i {
    font-size: 52px;
    color: #00bcd4;
    margin-bottom: 25px;
    transition: all 0.3s;
}
.service-card:hover i {
    transform: scale(1.1) rotate(5deg);
}
.service-card h4 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #1a1a2e;
    font-weight: 600;
}
.service-card .service-link {
    color: #00bcd4;
    text-decoration: none;
    font-weight: bold;
    display: inline-block;
    padding: 8px 20px;
    border: 2px solid #00bcd4;
    border-radius: 25px;
    transition: all 0.3s;
}
.service-card .service-link:hover {
    background: #00bcd4;
    color: #fff;
    box-shadow: 0 5px 15px rgba(0,188,212,0.3);
}
/* 统计区域优化 */
.stats-section {
    background: linear-gradient(135deg, rgba(26,26,46,0.9) 0%, rgba(22,33,62,0.9) 100%), url('assets/img/bg/slide_one.jpg') center/cover fixed;
    padding: 100px 0;
    color: #fff;
    position: relative;
}
.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2300bcd4' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.stats-item {
    text-align: center;
    padding: 30px 20px;
    position: relative;
    z-index: 1;
}
.stats-item .number {
    font-size: 56px;
    font-weight: bold;
    background: linear-gradient(135deg, #00bcd4, #0097a7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}
.stats-item .label {
    font-size: 16px;
    color: #e0e0e0;
    text-transform: uppercase;
    letter-spacing: 2px;
}
/* 关于我们区域优化 */
.about-section { padding: 80px 0; background: #f8f9fa; }
.about-section h2 {
    margin-bottom: 30px;
    color: #1a1a2e;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}
.about-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #00bcd4, #0097a7);
    border-radius: 2px;
}
.about-section p { line-height: 1.8; color: #555; font-size: 15px; }
/* 时间线优化 */
.timeline { position: relative; padding: 40px 0; }
.timeline-item {
    padding: 25px;
    border-left: 3px solid #00bcd4;
    margin-left: 30px;
    margin-bottom: 25px;
    background: #fff;
    border-radius: 0 10px 10px 0;
    box-shadow: 0 3px 15px rgba(0,0,0,0.05);
    transition: all 0.3s;
}
.timeline-item:hover {
    box-shadow: 0 8px 25px rgba(0,188,212,0.15);
    transform: translateX(5px);
}
.timeline-item h4 { color: #00bcd4; margin-bottom: 10px; font-weight: 600; }
.timeline-item p { color: #666; line-height: 1.6; }
/* 品牌区域优化 */
.brands-section { padding: 50px 0; background: #fff; }
.brand-item {
    display: inline-block;
    padding: 18px 30px;
    margin: 12px;
    background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
    border-radius: 10px;
    font-weight: bold;
    color: #333;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    transition: all 0.3s;
    border: 1px solid #eee;
}
.brand-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,188,212,0.15);
    border-color: #00bcd4;
    color: #00bcd4;
}
/* 页脚优化 */
.footer-section {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    padding: 60px 0 30px;
    position: relative;
}
.footer-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #00bcd4, #0097a7, #00bcd4);
}
.footer-section a { color: #00bcd4; text-decoration: none; transition: all 0.3s; }
.footer-section a:hover { color: #fff; text-shadow: 0 0 8px rgba(0,188,212,0.5); }
.footer-section h4 {
    margin-bottom: 25px;
    color: #00bcd4;
    font-weight: 600;
    position: relative;
    padding-bottom: 12px;
}
.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: #00bcd4;
    border-radius: 2px;
}
.footer-section p, .footer-section li { color: #aaa; line-height: 1.8; }
.footer-section ul { list-style: none; padding: 0; }
.footer-section ul li {
    margin-bottom: 10px;
    padding-left: 15px;
    position: relative;
}
.footer-section ul li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: #00bcd4;
    font-weight: bold;
}
/* 按钮优化 */
.btn {
    border-radius: 30px;
    padding: 12px 30px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}
.btn-primary {
    background: linear-gradient(135deg, #00bcd4, #0097a7);
    border: none;
}
.btn-info {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    border: none;
}
/* 响应式优化 */
@media (max-width: 768px) {
    .header-container {
        padding: 0 15px;
    }
    .logo-section .logo-text {
        font-size: 13px;
    }
    .main-nav {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: #1a1a2e;
        border-top: 1px solid rgba(255,255,255,0.1);
        box-shadow: 0 10px 20px rgba(0,0,0,0.3);
    }
    .main-nav.active {
        display: block;
    }
    .main-nav ul {
        flex-direction: column;
    }
    .main-nav li a {
        padding: 15px 20px;
        border-bottom: 1px solid rgba(255,255,255,0.05);
    }
    .main-nav li a::after {
        display: none;
    }
    .main-nav li.active a {
        background: rgba(0,188,212,0.2);
    }
    .mobile-menu-toggle {
        display: flex;
    }
    .top-contact-bar {
        position: fixed;
        top: 60px;
        padding: 10px 0;
    }
    .top-contact-bar .contact-row {
        flex-direction: column;
        align-items: flex-start;
        padding: 0 15px;
    }
    .top-contact-bar .contact-left,
    .top-contact-bar .contact-right {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }
    .top-contact-bar .contact-item {
        display: flex;
        margin-bottom: 4px;
    }
    .top-contact-bar .contact-divider { display: none; }
    .top-contact-bar .social-links { margin-left: 0; margin-top: 8px; }
    .main-wrapper {
        padding-top: 140px;
    }
    .stats-item .number { font-size: 42px; }
}