/* ========================================
   谷悦全邦企业官网 - 样式表
   简约大气 · 健康有机
======================================== */

/* CSS 变量 */
:root {
    --primary: #2d8a4e;
    --primary-dark: #1e6b3a;
    --primary-light: #e8f5e9;
    --secondary: #8B4513;
    --accent: #f5a623;
    --dark: #1a1a1a;
    --gray-dark: #333333;
    --gray: #666666;
    --gray-light: #f5f5f5;
    --white: #ffffff;
    --shadow: 0 2px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --radius: 8px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-dark);
    background: var(--white);
}

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

ul {
    list-style: none;
}

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

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

/* 通用按钮 */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

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

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

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

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

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

.btn-white:hover {
    background: var(--gray-light);
}

.btn-full {
    width: 100%;
}

/* 通用区块 */
.section {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 50px;
    color: var(--dark);
}

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

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

.text-white {
    color: var(--white);
}

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

/* ========================================
   导航栏
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    box-shadow: var(--shadow);
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.logo img {
    height: 50px;
}

.nav ul {
    display: flex;
    gap: 40px;
}

.nav a {
    font-size: 16px;
    font-weight: 500;
    color: var(--gray-dark);
    padding: 8px 0;
    position: relative;
}

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

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

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

.mobile-menu-btn {
    display: none;
    font-size: 28px;
    cursor: pointer;
}

/* ========================================
   Hero 区域
======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('../images/hero_family_dinner.png') center center / cover no-repeat;
    color: var(--white);
    text-align: center;
    padding: 120px 20px 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.45) 0%,
        rgba(20, 60, 30, 0.55) 50%,
        rgba(0, 0, 0, 0.5) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: 2px;
}

.hero .subtitle {
    font-size: 28px;
    margin-bottom: 16px;
    opacity: 0.95;
}

.hero .desc {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.85;
}

.hero .btn {
    margin: 0 10px;
}

/* ========================================
   核心数据
======================================== */
.stats {
    background: var(--white);
    padding: 60px 0;
    margin-top: -40px;
    position: relative;
    z-index: 10;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 15px;
    color: var(--gray);
    margin-top: 8px;
}

/* ========================================
   核心优势
======================================== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

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

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.advantage-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.advantage-card h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--dark);
}

.advantage-card p {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.8;
}

/* ========================================
   产品预览
======================================== */
.product-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-info h3 {
    font-size: 32px;
    margin-bottom: 20px;
    color: var(--dark);
}

.product-info p {
    margin-bottom: 20px;
    color: var(--gray);
}

.product-features {
    margin-bottom: 30px;
}

.product-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-light);
}

.product-features li:last-child {
    border-bottom: none;
}

.product-image {
    background: linear-gradient(135deg, var(--primary-light) 0%, #c8e6c9 100%);
    border-radius: var(--radius-lg);
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.product-badge {
    background: var(--primary);
    color: var(--white);
    padding: 20px 40px;
    border-radius: var(--radius);
    font-size: 24px;
    font-weight: 600;
}

/* ========================================
   合作伙伴
======================================== */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.partner-item {
    background: var(--white);
    padding: 30px 20px;
    text-align: center;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    font-weight: 500;
    color: var(--gray-dark);
    transition: var(--transition);
}

.partner-item:hover {
    color: var(--primary);
    transform: translateY(-4px);
}

/* ========================================
   CTA
======================================== */
.cta {
    text-align: center;
    color: var(--white);
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.cta p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

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

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

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--white);
}

.footer-col p {
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
}

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

.footer-col ul a {
    color: rgba(255,255,255,0.7);
}

.footer-col ul a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    color: rgba(255,255,255,0.5);
    font-size: 14px;
}

/* ========================================
   页面标题
======================================== */
.page-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 160px 0 80px;
    text-align: center;
}

.page-header h1 {
    font-size: 48px;
    margin-bottom: 16px;
}

.page-header p {
    font-size: 20px;
    opacity: 0.9;
}

/* ========================================
   关于页面
======================================== */
.about-intro {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-content h2 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--dark);
}

.about-content .lead {
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 20px;
}

.about-content p {
    margin-bottom: 16px;
    color: var(--gray);
}

.mission-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 50px 40px;
    border-radius: var(--radius-lg);
    text-align: center;
}

.mission-box h3 {
    font-size: 20px;
    margin-bottom: 20px;
    opacity: 0.9;
}

.mission-box .mission {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
}

.mission-box .sub {
    opacity: 0.85;
}

/* 特性卡片 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.feature-num {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.3;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 16px;
    color: var(--dark);
}

.feature-card p {
    color: var(--gray);
}

/* 团队 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

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

.team-info {
    padding: 40px;
}

.team-info h3 {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--dark);
}

.team-title {
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 20px;
}

.team-achievements li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    color: var(--gray);
}

.team-achievements li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.team-achievements li:first-child {
    font-weight: 500;
    color: var(--gray-dark);
}

.team-achievements li:first-child::before {
    content: '★';
}

.quote {
    margin-top: 20px;
    padding: 16px 20px;
    background: var(--primary-light);
    border-left: 4px solid var(--primary);
    font-style: italic;
    color: var(--gray);
}

/* 时间线 */
.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary);
    border-radius: 2px;
}

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

.timeline-item::before {
    content: '';
    position: absolute;
    left: -38px;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    border: 4px solid var(--white);
    box-shadow: 0 0 0 4px var(--primary);
}

.timeline-period {
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.timeline-content h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--dark);
}

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

/* 标准框 */
.standard-box {
    background: var(--gray-light);
    border-radius: var(--radius-lg);
    padding: 60px;
    text-align: center;
}

.standard-name {
    font-size: 24px;
    color: var(--primary);
    font-weight: 600;
    margin: 20px 0;
}

.standard-highlight {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius);
    margin: 20px 0;
    box-shadow: var(--shadow);
}

.standard-highlight p {
    margin-bottom: 12px;
}

.standard-partners {
    color: var(--gray);
    font-size: 14px;
}

/* ========================================
   产品页面
======================================== */
.product-detail-text .lead {
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 30px;
}

.product-detail-text h3 {
    font-size: 24px;
    color: var(--dark);
    margin: 40px 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-light);
}

.advantage-list {
    display: grid;
    gap: 20px;
}

.adv-item {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--gray-light);
    border-radius: var(--radius);
}

.adv-icon {
    font-size: 36px;
    flex-shrink: 0;
}

.adv-item h4 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--dark);
}

.adv-item p {
    color: var(--gray);
}

/* 营养表格 */
.nutrition-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.nutrition-table th,
.nutrition-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--gray-light);
}

.nutrition-table th {
    background: var(--primary);
    color: var(--white);
    font-weight: 500;
}

.nutrition-table tr:nth-child(even) {
    background: var(--gray-light);
}

.nutrition-table .highlight {
    color: var(--primary);
    font-weight: 700;
    font-size: 20px;
}

/* 健康功效 */
.health-benefits {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.benefit-item {
    padding: 24px;
    background: var(--primary-light);
    border-radius: var(--radius);
}

.benefit-item h4 {
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.benefit-item p {
    color: var(--gray);
}

/* 设备内容 */
.equipment-desc {
    max-width: 800px;
    margin: 0 auto 50px;
    text-align: center;
    color: var(--gray);
    font-size: 18px;
}

/* 流程 */
.process-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin: 40px 0;
}

.process-step {
    text-align: center;
    width: 150px;
}

.step-icon {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 12px;
}

.process-step h4 {
    font-size: 16px;
    color: var(--dark);
    margin-bottom: 8px;
}

.process-step p {
    font-size: 13px;
    color: var(--gray);
}

.process-arrow {
    color: var(--primary);
    font-size: 24px;
    font-weight: 700;
}

/* 设备优势 */
.equip-advantages {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.equip-adv {
    padding: 30px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.equip-adv h4 {
    color: var(--primary);
    margin-bottom: 12px;
}

.equip-adv p {
    color: var(--gray);
}

/* 参数 */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.spec-item {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.spec-label {
    display: block;
    color: var(--gray);
    font-size: 14px;
    margin-bottom: 8px;
}

.spec-value {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
}

/* 认证 */
.certifications {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin: 30px 0;
}

.cert-item {
    background: var(--primary);
    color: var(--white);
    padding: 16px 30px;
    border-radius: var(--radius);
    font-weight: 500;
}

/* 产品类型 */
.product-types {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: 30px 0;
}

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

.type-item h4 {
    color: var(--primary);
    margin-bottom: 8px;
}

/* 市场数据 */
.market-data {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.market-stat {
    text-align: center;
    padding: 40px 30px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
}

.market-num {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 12px;
}

.market-label {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 16px;
}

.market-desc {
    font-size: 14px;
    opacity: 0.85;
}

.market-strategy {
    background: rgba(255,255,255,0.1);
    padding: 40px;
    border-radius: var(--radius-lg);
    text-align: center;
}

.market-strategy h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

.market-strategy p {
    margin-bottom: 16px;
    opacity: 0.9;
}

/* 解决方案 */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

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

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.solution-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.solution-card h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--dark);
}

.solution-card p {
    color: var(--gray);
    font-size: 15px;
}

/* ========================================
   联系页面
======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-info-center {
    max-width: 720px;
    margin: 0 auto;
}

.contact-info h2,
.contact-form-wrapper h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: var(--dark);
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-items-center {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px 60px;
}

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

.contact-icon {
    font-size: 36px;
    flex-shrink: 0;
}

.contact-detail h3 {
    font-size: 16px;
    color: var(--gray);
    font-weight: normal;
    margin-bottom: 4px;
}

.contact-detail p {
    font-size: 18px;
    color: var(--dark);
    font-weight: 500;
}

/* 表单 */
.contact-form-wrapper {
    background: var(--gray-light);
    padding: 50px;
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--gray-dark);
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(45,138,78,0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-group select {
    cursor: pointer;
}

/* 服务承诺 */
.service-promises {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

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

.promise-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.promise-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--dark);
}

.promise-item p {
    color: var(--gray);
    font-size: 14px;
}

/* 合作流程 */
.cooperation-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

.coop-step {
    text-align: center;
    width: 160px;
}

.coop-num {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 16px;
}

.coop-step h3 {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--dark);
}

.coop-step p {
    font-size: 13px;
    color: var(--gray);
}

.coop-arrow {
    color: var(--primary);
    font-size: 24px;
    font-weight: 700;
}

/* ========================================
   响应式设计
======================================== */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-intro {
        grid-template-columns: 1fr;
    }
    
    .product-card {
        grid-template-columns: 1fr;
    }
    
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .market-data {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        box-shadow: var(--shadow);
        padding: 20px;
    }
    
    .nav.active {
        display: block;
    }
    
    .nav ul {
        flex-direction: column;
        gap: 16px;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero .subtitle {
        font-size: 22px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        padding: 30px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .process-flow {
        flex-direction: column;
    }
    
    .process-arrow {
        transform: rotate(90deg);
    }
    
    .equip-advantages {
        grid-template-columns: 1fr;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .certifications {
        flex-direction: column;
        align-items: center;
    }
    
    .product-types {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .service-promises {
        grid-template-columns: 1fr;
    }
    
    .cooperation-flow {
        flex-direction: column;
    }
    
    .coop-arrow {
        transform: rotate(90deg);
    }
    
    .health-benefits {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   新闻动态
======================================== */

/* 标签筛选 */
.news-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 40px;
}

.news-tag {
    padding: 8px 20px;
    border: 2px solid var(--primary-light);
    border-radius: 20px;
    background: var(--white);
    color: var(--gray);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.news-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.news-tag.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

/* 新闻列表 */
.news-list {
    display: grid;
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.news-card {
    display: flex;
    gap: 24px;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.news-card-date {
    flex-shrink: 0;
    width: 70px;
    text-align: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border-radius: var(--radius);
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.news-date-day {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
}

.news-date-month {
    font-size: 13px;
    opacity: 0.85;
}

.news-card-body {
    flex: 1;
    min-width: 0;
}

.news-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.news-source {
    font-size: 13px;
    color: var(--gray);
}

.news-card-tag {
    display: inline-block;
    padding: 2px 10px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 10px;
    font-size: 12px;
    font-weight: 500;
}

.news-card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 10px;
    line-height: 1.5;
    transition: var(--transition);
}

.news-card:hover .news-card-title {
    color: var(--primary);
}

.news-card-summary {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 12px;
}

.news-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.news-date-text {
    font-size: 13px;
    color: #999;
}

.news-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray);
    font-size: 16px;
}

.news-load-more {
    text-align: center;
    margin-top: 40px;
}

/* 首页最新新闻 */
.latest-news-container {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    gap: 16px;
}

.latest-news-item {
    display: flex;
    gap: 20px;
    align-items: center;
    padding: 18px 24px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.latest-news-item:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-lg);
}

.latest-news-date {
    flex-shrink: 0;
    font-size: 14px;
    color: var(--primary);
    font-weight: 500;
    min-width: 90px;
}

.latest-news-info {
    flex: 1;
    min-width: 0;
}

.latest-news-tag {
    font-size: 12px;
    color: var(--primary-dark);
    margin-bottom: 4px;
}

.latest-news-title {
    font-size: 16px;
    font-weight: 500;
    color: var(--dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: var(--transition);
}

.latest-news-item:hover .latest-news-title {
    color: var(--primary);
}

/* 新闻响应式 */
@media (max-width: 768px) {
    .news-card {
        flex-direction: column;
        gap: 16px;
        padding: 20px;
    }

    .news-card-date {
        width: auto;
        flex-direction: row;
        gap: 8px;
        padding: 8px 16px;
    }

    .news-date-day {
        font-size: 20px;
    }

    .news-card-title {
        font-size: 17px;
    }

    .latest-news-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .latest-news-date {
        min-width: auto;
    }

    .news-filter {
        gap: 8px;
    }

    .news-tag {
        padding: 6px 14px;
        font-size: 13px;
    }
}

/* ========================================
   动画
======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* ========================================
   新增样式 - 产品图片展示
======================================== */

/* 首页核心产品网格 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

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

.product-card-home:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-card-img {
    height: 200px;
    overflow: hidden;
    background: var(--gray-light);
}

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

.product-card-body {
    padding: 24px;
}

.product-card-body h3 {
    font-size: 18px;
    color: var(--dark);
    margin-bottom: 12px;
}

.product-card-body p {
    color: var(--gray);
    font-size: 14px;
    margin-bottom: 16px;
    line-height: 1.6;
}

/* 产品详情页图片展示 */
.product-images {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.product-img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    background: var(--gray-light);
}

/* 设备图片展示 */
.equipment-images {
    margin-bottom: 30px;
}

.equipment-img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

/* 设备实景图库 */
.equipment-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 30px 0 50px;
}

.equipment-gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    background: var(--white);
    transition: var(--transition);
}

.equipment-gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.equipment-gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

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

.equipment-gallery-label {
    display: block;
    text-align: center;
    padding: 12px 10px;
    font-size: 15px;
    font-weight: 500;
    color: var(--dark);
    background: var(--white);
}

/* 合作伙伴网格 - 增加数量 */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 15px;
}

.partner-item {
    background: var(--white);
    padding: 20px 15px;
    text-align: center;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    font-weight: 500;
    color: var(--gray-dark);
    transition: var(--transition);
    font-size: 14px;
}

.partner-item:hover {
    color: var(--primary);
    transform: translateY(-4px);
}

/* 页面描述 */
.section-desc {
    text-align: center;
    color: var(--gray);
    margin-top: -30px;
    margin-bottom: 40px;
    font-size: 16px;
}

/* 响应式 - 产品网格 */
@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partners-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .product-images {
        grid-template-columns: 1fr;
    }
}

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