/* 
 * 温州真彩智能科技有限公司 - 企业网站样式
 * 参�?zjhotop.cn 设计风格
 * 主色�? 绿色�?#228B22 / #2E8B57
 * 强调�? 橙色 #FF6600
 */

/* ========== CSS 变量 ========== */
:root {
    /* 主色�?- 绿色�?*/
    --primary-green: #228B22;
    --primary-green-dark: #1a6b1a;
    --primary-green-light: #2E8B57;
    
    /* 辅助�?*/
    --bg-white: #FFFFFF;
    --bg-light-gray: #F5F5F5;
    --text-dark: #333333;
    --text-gray: #666666;
    --text-light: #999999;
    
    /* 强调�?- 橙色 */
    --accent-orange: #FF6600;
    --accent-orange-hover: #E55A00;
    
    /* 边框�?*/
    --border-color: #E0E0E0;
    --border-light: #EEEEEE;
    
    /* 字体 */
    --font-cn: "Microsoft YaHei", "Source Han Sans CN", "PingFang SC", sans-serif;
    --font-en: Arial, Helvetica, sans-serif;
    
    /* 间距 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 60px;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 15px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-cn);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

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

/* ========== 标题样式 ========== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-dark);
}

h1 { font-size: 48px; }
h2 { font-size: 36px; }
h3 { font-size: 24px; }
h4 { font-size: 20px; }

@media (max-width: 768px) {
    h1 { font-size: 32px; }
    h2 { font-size: 28px; }
    h3 { font-size: 20px; }
}

/* ========== 按钮样式 ========== */
.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--accent-orange);
    color: #fff;
}

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

.btn-secondary {
    background: var(--primary-green);
    color: #fff;
}

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

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

.btn-outline:hover {
    background: var(--primary-green);
    color: #fff;
}

/* ========== 导航�?========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: #fff;
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo img {
    height: 50px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a {
    padding: 10px 20px;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-dark);
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--primary-green);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 60%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-dark);
}

@media (max-width: 992px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        opacity: 0;
        transition: all 0.3s ease;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav-links a {
        width: 100%;
        text-align: center;
        padding: 15px;
        border-bottom: 1px solid var(--border-light);
    }
    
    .nav-links a::after {
        display: none;
    }
}

/* ========== Hero 区域 ========== */
.hero {
    padding-top: 70px;
    position: relative;
    overflow: hidden;
}

.hero-banner {
    height: 500px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
    position: relative;
    display: flex;
    align-items: center;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></svg>');
    background-size: 100px 100px;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 42px;
    color: #fff;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
}

@media (max-width: 768px) {
    .hero-banner {
        height: 400px;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .hero-btns {
        flex-direction: column;
        align-items: center;
    }
}

/* ========== 页面标题区域 ========== */
.page-hero {
    padding-top: 70px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
    padding: 150px 0 60px;
    text-align: center;
    color: #fff;
}

.page-hero h1 {
    color: #fff;
    margin-bottom: 15px;
}

.page-hero p {
    font-size: 18px;
    opacity: 0.9;
}

/* ========== 区块通用样式 ========== */
.section {
    padding: 60px 0;
}

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

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    position: relative;
    display: inline-block;
    margin-bottom: 15px;
}

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

.section-header p {
    color: var(--text-gray);
    font-size: 16px;
}

/* ========== 产品网格 ========== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== 产品卡片 ========== */
.product-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
}

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

.product-card .product-img {
    width: 100%;
    height: 220px;
    overflow: hidden;
    position: relative;
}

.product-card .product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-img img {
    transform: scale(1.08);
}

.product-card .product-info {
    padding: 20px;
    text-align: center;
}

.product-card .product-info h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-dark);
}

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

.product-card .product-info a {
    color: var(--accent-orange);
    font-size: 14px;
    font-weight: 500;
}

.product-card .product-info a:hover {
    text-decoration: underline;
}

/* ========== 分类卡片 ========== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 992px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .category-grid {
        grid-template-columns: 1fr;
    }
}

.category-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 30px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.category-card .category-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 15px;
    background: var(--bg-light-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--primary-green);
}

.category-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

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

/* ========== 优势卡片 ========== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

@media (max-width: 1024px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

.feature-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 30px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.feature-card .feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
}

/* ========== 公司简介卡�?========== */
.about-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

@media (max-width: 992px) {
    .about-section {
        grid-template-columns: 1fr;
    }
}

.about-section .about-text h2 {
    margin-bottom: 20px;
}

.about-section .about-text p {
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-section .about-image img {
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

/* ========== 统计数据 ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.stat-item .stat-number {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary-green);
    line-height: 1;
    margin-bottom: 8px;
}

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

/* ========== 证书展示 ========== */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 992px) {
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.cert-item {
    aspect-ratio: 3/4;
    overflow: hidden;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.cert-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.cert-item:hover img {
    transform: scale(1.05);
}

/* ========== 流程步骤 ========== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 992px) {
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .process-grid {
        grid-template-columns: 1fr;
    }
}

.process-step {
    text-align: center;
    padding: 30px 15px;
}

.process-step .step-number {
    width: 50px;
    height: 50px;
    margin: 0 auto 20px;
    background: var(--primary-green);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
}

.process-step h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.process-step p {
    font-size: 14px;
    color: var(--text-gray);
}

/* ========== 时间�?========== */
.timeline {
    position: relative;
    padding-left: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-green);
}

.timeline-item {
    position: relative;
    padding-bottom: 40px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 5px;
    width: 16px;
    height: 16px;
    background: var(--primary-green);
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px var(--primary-green);
}

.timeline-year {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: 10px;
}

.timeline-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.timeline-content p {
    color: var(--text-gray);
}

/* ========== 联系表单 ========== */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

@media (max-width: 992px) {
    .contact-section {
        grid-template-columns: 1fr;
    }
}

.contact-info h3 {
    margin-bottom: 25px;
}

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

.contact-item .contact-icon {
    width: 45px;
    height: 45px;
    background: var(--primary-green);
    color: #fff;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    margin-right: 15px;
    flex-shrink: 0;
}

.contact-item .contact-text h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.contact-item .contact-text p {
    color: var(--text-gray);
    font-size: 15px;
}

.contact-form {
    background: #fff;
    padding: 30px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    margin-bottom: 25px;
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-family: var(--font-cn);
    transition: border-color 0.3s ease;
}

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

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

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

/* ========== 询盘表单 ========== */
.inquiry-form {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    padding: 40px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.inquiry-form h3 {
    text-align: center;
    margin-bottom: 30px;
}

.inquiry-form .form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

@media (max-width: 576px) {
    .inquiry-form .form-row {
        grid-template-columns: 1fr;
    }
}

.inquiry-form .form-full {
    grid-column: 1 / -1;
}

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

.inquiry-form .btn-submit {
    width: 100%;
    padding: 15px;
    font-size: 18px;
}

/* ========== 页脚 ========== */
.footer {
    background: #333;
    color: #fff;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

.footer-brand .logo-text {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-brand .logo-text i {
    color: var(--primary-green);
}

.footer-brand p {
    color: #bbb;
    font-size: 14px;
    line-height: 1.7;
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

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

.footer-links a {
    color: #bbb;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-green);
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #bbb;
    font-size: 14px;
    margin-bottom: 12px;
}

.footer-contact i {
    color: var(--primary-green);
    width: 18px;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #888;
    font-size: 14px;
}

/* ========== 返回顶部 ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: var(--primary-green);
    color: #fff;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    border: none;
}

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

.back-to-top:hover {
    background: var(--primary-green-dark);
    transform: translateY(-3px);
}

/* ========== 实用工具�?========== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.mb-4 { margin-bottom: 40px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mt-4 { margin-top: 40px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-1 { gap: 10px; }
.gap-2 { gap: 20px; }
.gap-3 { gap: 30px; }

/* ========== 动画 ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }
.fade-in-delay-4 { animation-delay: 0.4s; }

/* ========== 响应式调�?========== */
@media (max-width: 768px) {
    .section {
        padding: 40px 0;
    }
    
    .container {
        padding: 0 15px;
    }
}