/* ====================================
   CoolHome HVAC - 格力空调纽约代理
   网站样式表
   ==================================== */

/* CSS变量 */
:root {
    --primary-color: #1a5f2a;
    --secondary-color: #2e8b3e;
    --accent-color: #f5a623;
    --dark-color: #1a1a2e;
    --light-color: #f8f9fa;
    --text-color: #333;
    --text-light: #666;
    --white: #ffffff;
    --gradient-green: linear-gradient(135deg, #1a5f2a 0%, #2e8b3e 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

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

/* 导航栏 */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
    text-decoration: none;
    transition: opacity 0.3s;
}

.logo a:hover {
    opacity: 0.8;
}

.logo-icon {
    font-size: 2rem;
}

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

.logo-sub {
    font-size: 0.75rem;
    color: var(--text-light);
    display: block;
    margin-top: -5px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-color);
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-color);
}

.nav-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient-green);
    color: var(--white);
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
}

.nav-phone:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    transition: var(--transition);
}

/* Hero区域 */
.hero {
    background: var(--gradient-dark);
    color: var(--white);
    padding: 140px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: url('images/gmv5-heat-pump.jpg') center/cover;
    opacity: 0.3;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero h1 span {
    color: var(--accent-color);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-features {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 10px;
}

.hero-feature i {
    color: var(--accent-color);
    font-size: 1.5rem;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 15px 30px;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(26, 95, 42, 0.3);
}

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

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

/* 区块标题 */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.section-title p {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* 品牌优势区域 */
.brand-section {
    padding: 80px 0;
    background: var(--light-color);
}

.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.brand-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.brand-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

.brand-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.brand-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.brand-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 产品展示区域 */
.products-section {
    padding: 80px 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

.product-image {
    height: 220px;
    overflow: hidden;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 20px;
    transition: var(--transition);
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.product-info p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 15px;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.product-features span {
    background: var(--light-color);
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
}

/* 服务区域 */
.services-section {
    padding: 80px 0;
    background: var(--gradient-dark);
    color: var(--white);
}

.services-section .section-title h2 {
    color: var(--white);
}

.services-section .section-title p {
    color: rgba(255, 255, 255, 0.8);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.service-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-10px);
}

.service-card i {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.service-card p {
    opacity: 0.9;
    line-height: 1.8;
}

/* 客户评价区域 */
.reviews-section {
    padding: 80px 0;
    background: var(--light-color);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.review-card {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.review-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-green);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    font-weight: bold;
}

.review-info h4 {
    color: var(--dark-color);
    margin-bottom: 5px;
}

.review-info .location {
    color: var(--text-light);
    font-size: 0.9rem;
}

.review-stars {
    color: var(--accent-color);
    margin-bottom: 15px;
}

.review-content {
    color: var(--text-color);
    line-height: 1.8;
    font-style: italic;
}

/* FAQ区域 */
.faq-section {
    padding: 80px 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    margin-bottom: 15px;
    border-radius: 10px;
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.faq-question {
    padding: 20px 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--dark-color);
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-question i {
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 25px 20px;
    max-height: 500px;
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 联系区域 */
.contact-section {
    padding: 80px 0;
    background: var(--light-color);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h3 {
    font-size: 1.8rem;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.contact-info > p {
    color: var(--text-light);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 3px;
}

.contact-item h4 {
    color: var(--dark-color);
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--text-light);
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
}

.contact-form h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 25px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn {
    width: 100%;
    justify-content: center;
}

/* 服务区域页面 */
.service-areas {
    padding: 80px 0;
}

.areas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}

.area-card {
    background: var(--white);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.area-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
    border-bottom: 3px solid var(--primary-color);
}

.area-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.area-card h4 {
    color: var(--dark-color);
}

/* 页脚 */
.footer {
    background: var(--gradient-dark);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.footer-about p {
    opacity: 0.8;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary-color);
}

.footer-links h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links a {
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    opacity: 0.8;
}

.footer-contact i {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-bottom p {
    opacity: 0.7;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--accent-color);
}

/* 内页Hero */
.page-hero {
    background: var(--gradient-dark);
    color: var(--white);
    padding: 140px 0 60px;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.page-hero p {
    opacity: 0.8;
    font-size: 1.1rem;
}

/* About页面 */
.about-content {
    padding: 80px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h2 {
    font-size: 2rem;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 15px;
}

.about-image img {
    border-radius: 15px;
    box-shadow: var(--box-shadow);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.stat-card {
    text-align: center;
    padding: 30px;
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--box-shadow);
}

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-card p {
    color: var(--text-light);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-green);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    border: none;
    box-shadow: var(--box-shadow);
}

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

.back-to-top:hover {
    transform: translateY(-5px);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--box-shadow);
    }

    .nav-links.active {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-phone {
        display: none;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-features {
        flex-direction: column;
        gap: 15px;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .reviews-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}