/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 全局样式 */
:root {
    --primary: #0078FF;
    --primary-dark: #0067D5;
    --secondary: #FF7D00;
    --dark: #1E293B;
    --light: #F8FAFC;
    --gray: #64748B;
    --gray-light: #E2E8F0;
    --white: #FFFFFF;
    --success: #10B981;
    --danger: #EF4444;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
    overflow-x: hidden;
}

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

/* 通用样式 */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray);
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.btn-dark {
    background-color: var(--dark);
    color: var(--white);
}

.btn-dark:hover {
    background-color: #0F172A;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.w-100 {
    width: 100%;
}

/* 导航栏样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 999;
    transition: var(--transition);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--dark);
}

.logo-icon {
    font-size: 1.8rem;
    color: var(--primary);
    margin-right: 10px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-desktop ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-desktop a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 0;
    border-bottom: 2px solid transparent;
}

.nav-desktop a:hover,
.nav-desktop a.active {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
}

.header-contact {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
}

.nav-mobile {
    display: none;
    padding: 20px 0;
    border-top: 1px solid var(--gray-light);
}

.nav-mobile ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.nav-mobile a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    padding: 10px 0;
    display: block;
    transition: var(--transition);
}

.nav-mobile a:hover,
.nav-mobile a.active {
    color: var(--primary);
    padding-left: 10px;
}

.mobile-contact {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-light);
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
}

/* 英雄区样式 */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--dark) 0%, #0F172A 100%);
    color: var(--white);
    margin-top: 80px;
}

.hero-inner {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-desc {
    font-size: 1.2rem;
    color: #CBD5E1;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.hero-trust {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #CBD5E1;
}

.trust-item i {
    color: var(--primary);
}

.hero-image {
    flex: 1;
}

.hero-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* 核心优势样式 */
.features {
    padding: 80px 0;
    background-color: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background-color: var(--light);
    padding: 2rem;
    border-radius: 12px;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(0, 120, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.8rem;
    color: var(--primary);
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark);
}

.feature-desc {
    color: var(--gray);
    line-height: 1.7;
}

/* 适用场景样式 */
.scenarios {
    padding: 80px 0;
    background-color: var(--light);
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.scenario-card {
    background-color: var(--white);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.scenario-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
}

.scenario-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.scenario-content {
    padding: 1.5rem;
}

.scenario-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark);
}

.scenario-desc {
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.scenario-link {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.scenario-link:hover {
    color: var(--primary-dark);
    gap: 12px;
}

/* 热门机型样式 */
.models {
    padding: 80px 0;
    background-color: var(--white);
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.model-card {
    background-color: var(--light);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--gray-light);
    transition: var(--transition);
}

.model-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
}

.model-header {
    background-color: var(--dark);
    color: var(--white);
    padding: 1.5rem;
}

.model-title {
    font-size: 1.3rem;
    font-weight: 600;
}

.model-body {
    padding: 1.5rem;
}

.model-specs {
    list-style: none;
    margin-bottom: 2rem;
}

.model-specs li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 1rem;
    color: var(--gray);
}

.model-specs i {
    color: var(--primary);
    margin-top: 5px;
}

.model-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark);
}

.models-more {
    text-align: center;
    margin-top: 3rem;
}

/* 客户评价样式 */
.testimonials {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--dark) 0%, #0F172A 100%);
    color: var(--white);
}

.testimonials .section-title {
    color: var(--white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 12px;
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.05);
}

.testimonial-rating {
    color: #FBBF24;
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.testimonial-text {
    font-size: 1.1rem;
    font-style: italic;
    line-height: 1.8;
    color: #CBD5E1;
    margin-bottom: 2rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-weight: 600;
    margin-bottom: 5px;
}

.author-position {
    color: #CBD5E1;
    font-size: 0.9rem;
}

/* 联系咨询样式 */
.contact-section {
    padding: 80px 0;
    background-color: var(--white);
}

.contact-card {
    background-color: var(--light);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
    display: flex;
}

.contact-form {
    flex: 1;
    padding: 3rem;
}

.contact-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.contact-desc {
    color: var(--gray);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: var(--dark);
}

.form-control {
    padding: 12px 16px;
    border: 1px solid var(--gray-light);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 120, 255, 0.1);
}

.error-message {
    color: var(--danger);
    font-size: 0.875rem;
    height: 20px;
}

.contact-info {
    flex: 1;
    background-color: var(--dark);
    color: var(--white);
    padding: 3rem;
}

.info-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.info-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3rem;
}

.info-list li {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.info-list i {
    font-size: 1.8rem;
    color: var(--primary);
    margin-top: 5px;
}

.info-content h4 {
    font-weight: 600;
    margin-bottom: 5px;
}

.info-content p {
    color: #CBD5E1;
}

.info-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
}

.info-hours {
    color: #CBD5E1;
    margin-bottom: 1.5rem;
}

.info-social {
    display: flex;
    gap: 1.5rem;
}

.info-social a {
    color: var(--white);
    font-size: 1.5rem;
    transition: var(--transition);
}

.info-social a:hover {
    color: var(--primary);
    transform: translateY(-3px);
}

/* 页脚样式 */
.footer {
    background-color: var(--dark);
    color: var(--white);
    padding: 80px 0 40px;
}

.footer-top {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.footer-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 10px;
}

.footer-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 3px;
    background-color: var(--primary);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links a {
    color: #CBD5E1;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.brand-desc {
    color: #CBD5E1;
    margin: 1.5rem 0;
    line-height: 1.7;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: var(--white);
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--primary);
    transform: translateY(-3px);
}

.footer-contact {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: #CBD5E1;
}

.footer-contact i {
    color: var(--primary);
    margin-top: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #CBD5E1;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--primary);
    text-decoration: none;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
}