/* ========================================
   纽约三菱空调设备供应商 - 主样式文件
   ======================================== */

/* CSS 变量 */
:root {
    --primary-color: #E60012;
    --primary-dark: #B8000E;
    --secondary-color: #1a1a1a;
    --accent-color: #0066B3;
    --text-dark: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --bg-light: #f8f9fa;
    --bg-dark: #1a1a1a;
    --bg-gray: #f5f5f5;
    --white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --radius: 8px;
    --radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--white);
}

/* 通用样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-gray {
    background-color: var(--bg-gray);
}

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

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    color: var(--secondary-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
}

.section-title p {
    color: var(--text-light);
    font-size: 18px;
    max-width: 600px;
    margin: 20px auto 0;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

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

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

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

.btn-secondary:hover {
    background: #333;
    transform: translateY(-2px);
}

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

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

.btn-outline-dark {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

.btn-group {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* ========================================
   顶部信息栏
   ======================================== */
.top-bar {
    background: var(--secondary-color);
    color: var(--white);
    padding: 10px 0;
    font-size: 14px;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 25px;
}

.top-bar-left span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.top-bar-left i {
    color: var(--primary-color);
}

.top-bar-right a {
    color: var(--white);
    text-decoration: none;
    margin-left: 15px;
    transition: var(--transition);
}

.top-bar-right a:hover {
    color: var(--primary-color);
}

/* ========================================
   导航栏
   ======================================== */
.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 12px;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon i {
    font-size: 24px;
    color: var(--white);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text .brand-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--secondary-color);
    line-height: 1.2;
    white-space: nowrap;
}

.logo-text .brand-sub {
    font-size: 12px;
    color: var(--text-light);
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 5px;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    display: block;
    padding: 12px 18px;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border-radius: var(--radius);
    white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    background: rgba(230, 0, 18, 0.05);
}

.nav-menu .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    min-width: 220px;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 100;
}

.nav-menu li:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    padding: 12px 20px;
    border-radius: 0;
    border-bottom: 1px solid var(--border-color);
}

.dropdown-menu a:last-child {
    border-bottom: none;
}

.header-cta {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* 获取报价按钮 - 横版长方形 */
.btn-quote {
    white-space: nowrap;
    padding: 12px 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* 移动端菜单 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--secondary-color);
    cursor: pointer;
}

/* ========================================
   首页横幅
   ======================================== */
.hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #2d2d2d 100%);
    color: var(--white);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: var(--primary-color);
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
    opacity: 0.1;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 20px;
}

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

.hero-content p {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 40px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.1);
    padding: 10px 20px;
    border-radius: 50px;
}

.hero-feature i {
    color: var(--primary-color);
}

/* Banner 电话展示 */
.hero-phone {
    margin-bottom: 25px;
}

.hero-phone a {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    background: var(--primary-color);
    color: var(--white);
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 28px;
    font-weight: 700;
    transition: var(--transition);
    box-shadow: 0 8px 25px rgba(230, 0, 18, 0.4);
}

.hero-phone a:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(230, 0, 18, 0.5);
}

.hero-phone a i {
    font-size: 26px;
    animation: phoneRing 1.5s ease-in-out infinite;
}

@keyframes phoneRing {
    0%, 100% { transform: rotate(0deg); }
    10% { transform: rotate(-15deg); }
    20% { transform: rotate(15deg); }
    30% { transform: rotate(-15deg); }
    40% { transform: rotate(15deg); }
    50% { transform: rotate(0deg); }
}

.hero-image {
    text-align: center;
}

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

/* ========================================
   核心优势
   ======================================== */
.advantages {
    margin-top: -50px;
    position: relative;
    z-index: 10;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.advantage-card {
    background: var(--white);
    padding: 30px 25px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-5px);
}

.advantage-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.advantage-icon i {
    font-size: 28px;
    color: var(--white);
}

.advantage-card h3 {
    font-size: 18px;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.advantage-card p {
    color: var(--text-light);
    font-size: 14px;
}

/* ========================================
   产品展示
   ======================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

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

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

.product-image {
    height: 220px;
    background: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-image i {
    font-size: 80px;
    color: var(--text-muted);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--primary-color);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
}

.product-content {
    padding: 25px;
}

.product-content h3 {
    font-size: 20px;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.product-content p {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 14px;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.product-features span {
    background: var(--bg-gray);
    padding: 5px 12px;
    border-radius: 50px;
    font-size: 12px;
    color: var(--text-light);
}

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

.product-link:hover {
    gap: 12px;
}

/* ========================================
   应用场景
   ======================================== */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.application-card {
    display: flex;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.application-card:hover {
    box-shadow: var(--shadow-lg);
}

.application-image {
    width: 200px;
    min-height: 200px;
    background: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.application-image i {
    font-size: 60px;
    color: var(--primary-color);
}

.application-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.application-content {
    padding: 30px;
    flex: 1;
}

.application-content h3 {
    font-size: 22px;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.application-content p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.application-list {
    list-style: none;
}

.application-list li {
    padding: 5px 0;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.application-list li i {
    color: var(--primary-color);
    font-size: 12px;
}

/* ========================================
   品牌优势
   ======================================== */
.why-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #2d2d2d 100%);
    color: var(--white);
}

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

.why-section .section-title h2::after {
    background: var(--primary-color);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.why-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.why-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.why-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.why-icon i {
    font-size: 32px;
    color: var(--white);
}

.why-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.why-card p {
    opacity: 0.8;
    line-height: 1.7;
}

/* ========================================
   服务区域
   ======================================== */
.service-area {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.area-content h2 {
    font-size: 36px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.area-content > p {
    color: var(--text-light);
    font-size: 18px;
    margin-bottom: 30px;
}

.area-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.area-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background: var(--bg-gray);
    border-radius: var(--radius);
}

.area-item i {
    color: var(--primary-color);
    font-size: 20px;
}

.area-item span {
    font-weight: 500;
}

.area-map {
    background: var(--bg-gray);
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 400px;
}

.area-map iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* ========================================
   CTA 行动召唤
   ======================================== */
.cta-section {
    background: var(--primary-color);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.cta-content p {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* ========================================
   博客文章
   ======================================== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.blog-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.blog-image {
    height: 200px;
    background: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.blog-image i {
    font-size: 60px;
    color: var(--text-muted);
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-content {
    padding: 25px;
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 13px;
    color: var(--text-muted);
}

.blog-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.blog-content h3 {
    font-size: 18px;
    color: var(--secondary-color);
    margin-bottom: 10px;
    line-height: 1.4;
}

.blog-content h3 a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

.blog-content h3 a:hover {
    color: var(--primary-color);
}

.blog-content p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 15px;
}

.blog-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.blog-link:hover {
    gap: 10px;
}

/* ========================================
   FAQ 常见问题
   ======================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

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

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

.faq-question:hover {
    background: var(--bg-gray);
}

.faq-question h3 {
    font-size: 17px;
    color: var(--secondary-color);
    font-weight: 600;
}

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

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

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

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

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

/* ========================================
   联系表单
   ======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 32px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.contact-info > p {
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 17px;
}

.contact-details {
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    color: var(--white);
    font-size: 20px;
}

.contact-text h4 {
    font-size: 16px;
    color: var(--secondary-color);
    margin-bottom: 5px;
}

.contact-text p,
.contact-text a {
    color: var(--text-light);
    text-decoration: none;
}

.contact-text a:hover {
    color: var(--primary-color);
}

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

.contact-form-wrapper h3 {
    font-size: 24px;
    color: var(--secondary-color);
    margin-bottom: 25px;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(230, 0, 18, 0.1);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-submit {
    width: 100%;
    padding: 16px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.form-submit:hover {
    background: var(--primary-dark);
}

/* ========================================
   关于我们页面
   ======================================== */
.about-hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #2d2d2d 100%);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.about-hero h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.about-hero p {
    font-size: 20px;
    opacity: 0.9;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 32px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

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

.about-image {
    background: var(--bg-gray);
    border-radius: var(--radius-lg);
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.about-image i {
    font-size: 120px;
    color: var(--text-muted);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 30px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 10px;
}

.stat-label {
    color: var(--text-light);
    font-size: 16px;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--secondary-color);
    color: var(--white);
    padding-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-about .footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-about .footer-logo-icon {
    width: 45px;
    height: 45px;
    background: var(--primary-color);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-about .footer-logo-icon i {
    font-size: 22px;
    color: var(--white);
}

.footer-about .footer-logo-text {
    font-size: 18px;
    font-weight: 700;
    white-space: nowrap;
}

.footer-about p {
    opacity: 0.7;
    margin-bottom: 20px;
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer h4 {
    font-size: 18px;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 12px;
}

.footer h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-contact p {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
    opacity: 0.7;
}

.footer-contact i {
    color: var(--primary-color);
    margin-top: 3px;
}

.footer-bottom {
    padding: 25px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-bottom p {
    opacity: 0.6;
    font-size: 14px;
}

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

.footer-bottom a:hover {
    text-decoration: underline;
}

/* ========================================
   内页通用样式
   ======================================== */
.page-hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #2d2d2d 100%);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
}

.page-hero h1 {
    font-size: 38px;
    margin-bottom: 10px;
}

.page-hero p {
    font-size: 18px;
    opacity: 0.8;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    font-size: 14px;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--white);
}

.breadcrumb span {
    opacity: 0.5;
}

/* ========================================
   博客详情页
   ======================================== */
.blog-detail {
    max-width: 800px;
    margin: 0 auto;
}

.blog-detail-header {
    margin-bottom: 40px;
}

.blog-detail-header h1 {
    font-size: 36px;
    color: var(--secondary-color);
    margin-bottom: 20px;
    line-height: 1.3;
}

.blog-detail-content {
    color: var(--text-dark);
    line-height: 1.9;
}

.blog-detail-content h2 {
    font-size: 26px;
    color: var(--secondary-color);
    margin: 40px 0 20px;
}

.blog-detail-content h3 {
    font-size: 22px;
    color: var(--secondary-color);
    margin: 30px 0 15px;
}

.blog-detail-content p {
    margin-bottom: 20px;
}

.blog-detail-content ul,
.blog-detail-content ol {
    margin: 20px 0;
    padding-left: 30px;
}

.blog-detail-content li {
    margin-bottom: 10px;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-image {
        display: none;
    }

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

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

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

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

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

@media (max-width: 768px) {
    .top-bar {
        display: none;
    }

    .header .container {
        flex-wrap: wrap;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
    }

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

    .mobile-menu-btn {
        display: block;
    }

    .header-cta {
        display: none;
    }

    .hero {
        padding: 60px 0;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .hero-features {
        justify-content: center;
    }

    .section {
        padding: 50px 0;
    }

    .section-title h2 {
        font-size: 28px;
    }

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

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

    .application-card {
        flex-direction: column;
    }

    .application-image {
        width: 100%;
        height: 150px;
    }

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

    .service-area {
        grid-template-columns: 1fr;
    }

    .area-map {
        height: 300px;
    }

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

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

    .form-row {
        grid-template-columns: 1fr;
    }

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

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

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

    .btn-group {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-content h1 {
        font-size: 26px;
    }

    .section-title h2 {
        font-size: 24px;
    }

    .advantage-card {
        padding: 20px 15px;
    }

    .contact-form-wrapper {
        padding: 25px;
    }

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

    .stat-number {
        font-size: 36px;
    }
}