/* ========== 九坤环保官网样式 ========== */
/* 从现有网站提取，100%复刻 */

/* ========== CSS变量 ========== */
:root {
    --color-primary: #0d7c3e;
    --color-primary-dark: #095e2e;
    --color-primary-light: #e8f5ee;
    --color-accent: #1a9f4e;
    --color-bg: #ffffff;
    --color-bg-section: #f8fafb;
    --color-bg-card: #ffffff;
    --color-bg-card-hover: #f0faf4;
    --color-text: #2c3e50;
    --color-text-muted: #6b7b8d;
    --color-text-light: #8b95a8;
    --color-border: #e2e8f0;
    --color-border-light: #edf2f7;
    --font-main: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    --max-width: 1200px;
    --transition: all 0.3s ease;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    overflow-x: hidden;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== 顶部信息栏 ========== */
.top-bar {
    background: #1a2a3a;
    padding: 8px 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.75);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-info {
    display: flex;
    gap: 30px;
    justify-content: flex-end;
}

.top-info span i {
    margin-right: 6px;
    color: var(--color-accent);
}

/* ========== 导航栏 ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
    padding-top: 36px;
    box-shadow: none;
}

.header.scrolled {
    padding-top: 0;
    background: rgba(255, 255, 255, 0.98);
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.header.scrolled .top-bar-spacer {
    display: none;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 105px;
}

.header .container {
    max-width: 100%;
    padding: 0 40px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-shrink: 0;
}

.logo-img {
    height: 66px;
    width: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.logo-name {
    font-size: 30px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: 3px;
    line-height: 1.2;
}

.logo-slogan {
    font-size: 17px;
    color: var(--color-primary);
    letter-spacing: 2px;
    font-weight: 500;
}

.footer-logo-img {
    height: 40px;
    width: auto;
}

.nav {
    display: flex;
    gap: 0;
    flex: 1;
    justify-content: center;
}

.nav-link {
    padding: 8px 24px;
    font-size: 23px;
    color: var(--color-text-muted);
    border-radius: 4px;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

/* ========== 下拉菜单 ========== */
.nav-dropdown {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.nav-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    min-width: 200px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    border-radius: 8px;
    padding: 8px 0;
    z-index: 1000;
    border: 1px solid var(--color-border);
}

.nav-dropdown:hover .nav-dropdown-content {
    display: block;
}

.nav-dropdown-content a {
    display: block;
    padding: 10px 20px;
    font-size: 15px;
    color: var(--color-text);
    white-space: nowrap;
    transition: var(--transition);
}

.nav-dropdown-content a:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.btn-inquiry {
    padding: 10px 28px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    flex-shrink: 0;
}

.btn-inquiry:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(13, 124, 62, 0.3);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 44px;
    cursor: pointer;
}

/* ========== Banner轮播 ========== */
.hero {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    padding-top: 106px;
    background: #0a1e14;
}

.banner-slider {
    position: relative;
    width: 100%;
}

.banner-slide {
    position: relative;
    width: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    z-index: 1;
    display: none;
}

.banner-slide.active {
    opacity: 1;
    z-index: 2;
    display: block;
}

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

/* ========== 关于九坤区块 ========== */
.intro {
    padding: 100px 0;
    background: var(--color-bg);
    position: relative;
}
.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}
.intro-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-top: 28px;
}
.highlight {
    text-align: center;
    padding: 20px 8px;
    background: #f8fafb;
    border-radius: 8px;
    border: 1px solid #edf2f7;
    transition: all 0.3s;
}
.highlight i {
    font-size: 24px;
    color: #0d7c3e;
    margin-bottom: 8px;
    display: block;
}
.highlight span {
    font-size: 14px;
    color: #6b7b8d;
}
.highlight:hover {
    border-color: #0d7c3e;
    background: #e8f5ee;
}

/* ========== 首页产品卡片（对齐静态站） ========== */
.home-product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.home-product-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}
.home-product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.12);
}
.home-product-img {
    height: 220px;
    background: #f0f4f8;
    overflow: hidden;
}
.home-product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.home-product-card:hover .home-product-img img {
    transform: scale(1.05);
}
.home-product-body {
    padding: 22px 24px;
}
.home-product-body h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}
.home-product-body h3 a {
    color: var(--color-text);
    text-decoration: none;
}
.home-product-desc {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 14px;
}
.home-product-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
}
.home-product-link i {
    font-size: 12px;
    transition: transform 0.3s ease;
}
.home-product-card:hover .home-product-link i {
    transform: translateX(4px);
}

/* ========== 核心优势（为什么选择九坤） ========== */
.advantages {
    padding: 100px 0;
    background: var(--color-bg);
    position: relative;
}
.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 40px;
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-bg) 100%);
    opacity: 0.06;
    pointer-events: none;
}
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.advantage-card {
    position: relative;
    text-align: center;
    padding: 40px 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.advantage-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.advantage-num {
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 40px;
    font-weight: 800;
    color: rgba(13, 124, 62, 0.08);
    line-height: 1;
}
.advantage-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}
.advantage-icon i {
    font-size: 28px;
    color: var(--color-primary);
}
.advantage-card h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
    letter-spacing: 1px;
}
.advantage-card p {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 30, 20, 0.15) 0%, rgba(10, 30, 20, 0.05) 40%, rgba(13, 60, 35, 0.12) 100%);
    pointer-events: none;
}

.banner-content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 0 20px;
}

.banner-indicators {
    position: relative;
    display: flex;
    gap: 12px;
    justify-content: center;
    padding: 16px 0;
    background: #0a1e14;
    z-index: 10;
}

/* ========== 首页Banner底部波浪过渡（与轮播无缝衔接） ========== */
.hero-wave {
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    z-index: 10;
    line-height: 0;
    pointer-events: none;
}
.hero-wave svg {
    display: block;
    width: 100%;
    height: 80px;
}

.indicator {
    width: 36px;
    height: 3px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    cursor: pointer;
    transition: var(--transition);
}

.indicator.active {
    background: var(--color-accent);
    width: 48px;
}

/* ========== Banner左右箭头（对齐静态站：PC显示，移动端隐藏） ========== */
.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-56%);
    width: 44px;
    height: 44px;
    background: rgba(0,0,0,0.2);
    border: none;
    border-radius: 8px;
    color: #fff;
    cursor: pointer;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}
.banner-arrow:hover {
    background: rgba(13,124,62,0.85);
    transform: translateY(-56%) scale(1.08);
}
.banner-arrow.prev { left: 20px; }
.banner-arrow.next { right: 20px; }
.banner-arrow::before {
    font-size: 48px;
    font-weight: 300;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1;
    letter-spacing: -2px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.banner-arrow.prev::before { content: '‹'; }
.banner-arrow.next::before { content: '›'; }

/* ========== 数据实力统计条 ========== */
.stats-bar {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #0d6b35 100%);
    padding: 50px 0;
    position: relative;
}

.stats-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
}

.stats-item {
    text-align: center;
    flex: 1;
    padding: 0 30px;
}

.stats-number {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    letter-spacing: 2px;
}

.stats-label {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 6px;
    letter-spacing: 2px;
}

.stats-divider {
    width: 1px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
}

/* ========== 通用区块 ========== */
.section {
    padding: 70px 0;
}

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

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

.section-title h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
}

.section-title p {
    font-size: 15px;
    color: var(--color-text-muted);
    letter-spacing: 1px;
}

.section-title .title-line {
    width: 60px;
    height: 3px;
    background: var(--color-primary);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* section-header 样式（首页各栏目标题区） */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}
.section-header .section-tag {
    display: block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--color-primary);
    text-transform: uppercase;
    margin-bottom: 8px;
}
.section-header .section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
}
.section-header .section-desc {
    font-size: 15px;
    color: var(--color-text-muted);
    letter-spacing: 1px;
}
.section-header .section-line {
    width: 60px;
    height: 3px;
    background: var(--color-primary);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ========== 通用按钮 ========== */
.btn {
    display: inline-block;
    padding: 14px 40px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 4px;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(13, 124, 62, 0.3);
}

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

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

/* ========== 新闻页面Banner ========== */
.news-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    padding: 60px 0;
    text-align: center;
    margin-top: 116px;
}

.news-banner h1 {
    font-size: 36px;
    color: #fff;
    margin-bottom: 10px;
}

.news-banner p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
}

/* ========== 新闻列表 ========== */
.news-section {
    padding: 50px 0;
    background: var(--color-bg-section);
}

.news-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
    justify-content: center;
}

.news-tab {
    padding: 8px 20px;
    font-size: 14px;
    color: var(--color-text-muted);
    background: #fff;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s;
    border: 1px solid var(--color-border);
    text-decoration: none;
}

.news-tab:hover,
.news-tab.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.news-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 24px;
}

.news-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.news-card-content {
    padding: 24px;
}

.news-card-meta {
    font-size: 12px;
    color: var(--color-text-light);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.news-card-meta .category {
    padding: 2px 10px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 10px;
}

.news-card h3 {
    font-size: 18px;
    color: var(--color-text);
    margin-bottom: 12px;
    line-height: 1.5;
}

.news-card h3 a:hover {
    color: var(--color-primary);
}

.news-card p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
}

.news-card .read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--color-primary);
    font-weight: 500;
}

.news-card .read-more:hover {
    gap: 10px;
}

/* ========== 文章详情 ========== */
.article-content {
    padding: 50px 0;
}

.article-content .main-layout {
    display: flex;
    gap: 30px;
    padding: 30px 0;
}

.article-content .main {
    flex: 1;
}

.article-content h1 {
    font-size: 28px;
    color: var(--color-text);
    margin-bottom: 20px;
    line-height: 1.4;
}

.article-content .meta {
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
}

.article-content .meta i {
    margin-right: 4px;
}

.article-body {
    font-size: 15px;
    line-height: 2;
    color: var(--color-text);
}

.article-body p {
    margin-bottom: 16px;
}

.article-body h2 {
    font-size: 20px;
    color: var(--color-primary);
    margin: 30px 0 16px;
}

.article-body h3 {
    font-size: 18px;
    color: var(--color-text);
    margin: 24px 0 12px;
}

.article-body ul, .article-body ol {
    margin: 16px 0;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 8px;
}

.article-body img {
    border-radius: 8px;
    margin: 20px 0;
}

.article-body blockquote {
    border-left: 4px solid var(--color-primary);
    padding: 16px 20px;
    background: var(--color-primary-light);
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
}

.back-link {
    display: inline-block;
    margin-top: 30px;
    padding: 10px 24px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 6px;
    font-size: 14px;
}

.back-link:hover {
    background: var(--color-primary-dark);
}

/* ========== 面包屑 ========== */
.breadcrumb {
    background: #fff;
    border-radius: 8px;
    padding: 12px 20px;
    margin-bottom: 20px;
    font-size: 13px;
    color: var(--color-text-muted);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    margin-top: 141px;
}

.breadcrumb a {
    color: var(--color-text-muted);
}

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

.breadcrumb span {
    margin: 0 8px;
    color: #ccc;
}

/* ========== 侧边栏 ========== */
.sidebar {
    width: 280px;
    flex-shrink: 0;
}

.sidebar-box {
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow-md);
    margin-bottom: 20px;
}

.sidebar-box h3 {
    font-size: 16px;
    color: var(--color-text);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
}

.sidebar-links a {
    display: block;
    padding: 10px 12px;
    font-size: 14px;
    color: var(--color-text-muted);
    border-radius: 6px;
    transition: var(--transition);
}

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

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

.sidebar-contact .phone {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    margin: 10px 0;
}

.sidebar-contact p {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}

/* ========== 主布局 ========== */
.main-layout {
    display: flex;
    gap: 30px;
    padding: 30px 0;
}

.main-layout .main {
    flex: 1;
}

/* ========== 分页 ========== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
    padding: 20px 0;
}

.page-btn {
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-text);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
    text-decoration: none;
    display: inline-block;
}

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

.page-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.page-info {
    padding: 8px 16px;
    color: var(--color-text-muted);
    font-size: 14px;
}

/* ========== 产品页面 ========== */
.products-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    padding: 60px 0;
    text-align: center;
    margin-top: 116px;
}

.products-banner h1 {
    font-size: 36px;
    color: #fff;
    margin-bottom: 10px;
}

.products-banner p {
    font-size: 16px;
    color: rgba(255,255,255,0.8);
}

.products-section {
    padding: 50px 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.product-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.product-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.product-card-img .placeholder {
    font-size: 48px;
    color: var(--color-primary-light);
}

.product-card-body {
    padding: 20px;
}

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

.product-card-body p {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.product-card-body .product-btn {
    display: inline-block;
    margin-top: 12px;
    padding: 6px 18px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 4px;
    font-size: 13px;
}

.product-card-body .product-btn:hover {
    background: var(--color-primary-dark);
}

/* ========== 产品详情 ========== */
.product-detail {
    padding: 40px 0;
}

.product-detail-header {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
}

.product-detail-img {
    width: 400px;
    flex-shrink: 0;
    border-radius: 12px;
    overflow: hidden;
    background: #f8f8f8;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.product-detail-img img {
    width: 100%;
    height: auto;
}

.product-detail-info h1 {
    font-size: 28px;
    color: var(--color-text);
    margin-bottom: 16px;
}

.product-detail-info .product-desc {
    font-size: 15px;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 20px;
}

.product-specs {
    background: var(--color-bg-section);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
}

.product-specs h3 {
    font-size: 18px;
    color: var(--color-text);
    margin-bottom: 16px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid var(--color-border-light);
}

.specs-table td {
    padding: 12px 16px;
    font-size: 14px;
}

.specs-table td:first-child {
    color: var(--color-text-muted);
    width: 30%;
    background: rgba(13,124,62,0.03);
}

/* ========== 联系我们 ========== */
.contact-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    padding: 60px 0;
    text-align: center;
    margin-top: 116px;
}

.contact-banner h1 {
    font-size: 36px;
    color: #fff;
    margin-bottom: 10px;
}

.contact-banner p {
    font-size: 16px;
    color: rgba(255,255,255,0.8);
}

/* ========== Banner 底部波浪过渡（与首页hero-wave同款，衔接下方内容区） ========== */
.banner-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    line-height: 0;
    z-index: 5;
    pointer-events: none;
}
.banner-wave svg {
    display: block;
    width: 100%;
    height: 60px;
}
/* 下方内容区为浅灰时使用 */
.banner-wave.gray svg path { fill: #f5f7fa; }
/* 下方内容区为更浅灰时使用 */
.banner-wave.bg-section svg path { fill: var(--color-bg-section, #f5f8f6); }
/* 所有banner都需要相对定位以承载波纹 */
.news-banner, .products-banner, .contact-banner, .solutions-banner, .page-banner, .case-detail-banner {
    position: relative;
    overflow: visible;
}

.contact-section {
    padding: 60px 0;
}

.contact-grid {
    display: grid;
    /* 移动端优先：默认上下单列，仅桌面大屏恢复左右两列 */
    grid-template-columns: 1fr;
    gap: 24px;
}
@media (min-width: 1025px) {
    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

.contact-info-box {
    background: var(--color-bg-section);
    border-radius: 12px;
    padding: 40px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 30px;
}

.contact-info-item i {
    font-size: 24px;
    color: var(--color-primary);
    margin-top: 4px;
    width: 32px;
    text-align: center;
}

.contact-info-item h4 {
    font-size: 16px;
    color: var(--color-text);
    margin-bottom: 4px;
}

.contact-info-item p {
    font-size: 14px;
    color: var(--color-text-muted);
}

.contact-form {
    background: #fff;
    border-radius: 12px;
    padding: 40px;
    box-shadow: var(--shadow-md);
}

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

.form-group label {
    display: block;
    font-size: 14px;
    color: var(--color-text);
    margin-bottom: 6px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 14px;
    font-family: var(--font-main);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(13,124,62,0.1);
}

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

/* ========== 页脚 ========== */
.footer {
    background: #1a2a3a;
    padding: 50px 0 0;
    margin-top: 60px;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-logo-name {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
}

.footer h4 {
    font-size: 14px;
    color: #fff;
    margin-bottom: 16px;
}

.footer p, .footer a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 2;
}

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

.footer-links a {
    display: block;
    padding: 3px 0;
}

.footer-contact i {
    margin-right: 6px;
    color: var(--color-accent);
}

/* 折叠标题：PC端不显示＋号箭头 */
.footer-toggle { display: none; }
.footer-col-title { cursor: default; }

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 20px 0;
    text-align: center;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.35);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .nav-link {
        padding: 8px 16px;
        font-size: 18px;
    }
    
    .product-detail-header {
        flex-direction: column;
    }
    
    .product-detail-img {
        width: 100%;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .top-bar { display: none; }
    
    .header { padding-top: 0; }
    
    .nav-wrapper { height: 70px; }
    
    .logo-img { height: 44px; }
    
    .logo-name { font-size: 22px; }
    
    .logo-slogan { font-size: 13px; }
    
    .nav { display: none; }
    
    .btn-inquiry { display: none; }
    
    .mobile-toggle { display: block; }
    
    .nav.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #fff;
        padding: 20px;
        box-shadow: var(--shadow-lg);
    }
    
    .hero { padding-top: 70px; }

    .hero-wave svg { height: 48px; }

    /* Banner箭头移动端隐藏（对齐静态站） */
    .banner-arrow { display: none !important; }

    /* 关于九坤：移动端文字在上、图片在下 */
    .intro { padding: 60px 0; }
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .intro-highlights {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-top: 20px;
    }
    .highlight { padding: 14px 6px; }
    .highlight i { font-size: 20px; }
    .highlight span { font-size: 13px; }

    /* 核心优势：移动端加大区块间距、卡片2列、编号缩小 */
    .advantages { padding: 60px 0; }
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .advantage-card { padding: 26px 14px; }
    .advantage-icon {
        width: 52px;
        height: 52px;
        margin-bottom: 14px;
    }
    .advantage-icon i { font-size: 22px; }
    .advantage-num {
        font-size: 30px;
        top: 10px;
        right: 12px;
    }
    .advantage-card h3 { font-size: 15px; }
    .advantage-card p { font-size: 12px; }

    /* 首页产品卡片：移动端一行一个、大图、名称居中，隐藏简介和"了解详情" */
    .home-product-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .home-product-img { height: 230px; }
    .home-product-body {
        padding: 16px 12px;
        text-align: center;
    }
    .home-product-body h3 {
        font-size: 16px;
        margin-bottom: 0;
        line-height: 1.4;
    }
    .home-product-desc,
    .home-product-link {
        display: none !important;
    }

    /* 汉堡展开菜单层级最高，防止被轮播/内容遮挡 */
    .nav.mobile-open {
        z-index: 1200;
    }
    
    .news-banner, .products-banner, .contact-banner, .solutions-banner, .page-banner, .case-detail-banner {
        margin-top: 70px !important;
        padding: 36px 0 42px !important;
        min-height: 0;
        height: auto;
        overflow: visible;
    }

    .news-banner h1, .products-banner h1, .contact-banner h1, .solutions-banner h1, .page-banner h1, .case-detail-banner h1 {
        font-size: 26px;
        line-height: 1.4;
        margin-bottom: 8px;
    }

    .news-banner p, .products-banner p, .contact-banner p, .solutions-banner p, .page-banner p, .case-detail-banner .crumb {
        font-size: 13px;
        line-height: 1.6;
    }

    .banner-wave svg { height: 36px; }

    /* 联系我们：手机端强制上下单列，防表单横向溢出被切 */
    .contact-grid {
        grid-template-columns: 1fr !important;
        gap: 24px !important;
    }
    .contact-grid > .contact-info-box,
    .contact-grid > .contact-form {
        min-width: 0 !important;
        max-width: 100% !important;
        padding: 24px 18px !important;
        box-sizing: border-box;
        overflow-wrap: break-word;
        word-break: break-word;
    }
    .contact-form .form-group input,
    .contact-form .form-group textarea,
    .contact-form .form-group select {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box;
    }
    .contact-form .btn-full { width: 100% !important; box-sizing: border-box; }

    .breadcrumb { margin-top: 85px; }
    
    .section-title h2 { font-size: 24px; }
    
    .stats-grid { flex-wrap: wrap; }
    
    .stats-item { flex: 1 1 50%; margin-bottom: 20px; }
    
    .stats-divider { display: none; }
    
    .stats-number { font-size: 36px; }
    
    .news-list { grid-template-columns: 1fr; }
    
    .section-header .section-title { font-size: 24px; }
    
    .main-layout { flex-direction: column; }
    
    .sidebar { width: 100%; }
    
    /* === 移动端底部：产品中心/快速导航折叠手风琴，公司简介+联系方式常显 === */
    .footer-grid { grid-template-columns: 1fr; gap: 0; padding-bottom: 20px; }
    .footer-col-title {
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin: 0;
        padding: 16px 0;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        font-size: 15px;
    }
    .footer-toggle {
        display: inline-block;
        width: 14px; height: 14px;
        position: relative;
        flex-shrink: 0;
        transition: transform 0.3s;
    }
    .footer-toggle::before, .footer-toggle::after {
        content: '';
        position: absolute;
        background: #fff;
        border-radius: 1px;
    }
    .footer-toggle::before { left: 0; top: 6px; width: 14px; height: 2px; }
    .footer-toggle::after { left: 6px; top: 0; width: 2px; height: 14px; }
    .footer-col.open .footer-toggle::after { opacity: 0; }
    .footer-col .footer-links {
        display: none;
        padding: 6px 0 12px;
    }
    .footer-col.open .footer-links { display: block; }
    .footer-about, .footer-contact-col { padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,0.08); }
    .footer-contact-col h4 { margin-bottom: 10px; }
    
    .products-grid { grid-template-columns: 1fr; }

    .article-content h1 { font-size: 22px; }
}

/* ========== 联系我们 / 在线询价（首页 #contact 与 contact.php 共用） ========== */
.contact-section { padding: 70px 0; background: #fff; }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}
.contact-info { display: flex; flex-direction: column; gap: 30px; }
.contact-item { display: flex; align-items: flex-start; gap: 18px; }
.contact-item > i {
    flex-shrink: 0;
    width: 54px; height: 54px;
    border-radius: 12px;
    background: rgba(13,124,62,0.1);
    color: #0d7c3e;
    font-size: 20px;
    display: flex; align-items: center; justify-content: center;
}
.contact-item h4 { font-size: 14px; color: #8b95a8; font-weight: 400; margin: 2px 0 6px; }
.contact-item p { font-size: 16px; color: #1f2937; font-weight: 400; margin: 0; line-height: 1.55; word-break: break-word; }
.contact-item p.contact-phone { font-size: 26px; font-weight: 800; color: #0d7c3e; line-height: 1.3; margin-top: 2px; }

.contact-form-wrapper {
    background: #f8f9fb;
    border: 1px solid #eef0f3;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 6px 24px rgba(15,35,70,0.06);
}
.contact-form-wrapper h3 { font-size: 24px; color: #1f2937; margin: 0 0 8px; font-weight: 700; }
.contact-form-wrapper > p { color: #8b95a8; font-size: 14px; margin: 0 0 28px; }
.contact-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 13px 16px;
    background: #fff;
    border: 1px solid #e2e6ec;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    box-sizing: border-box;
    color: #1f2937;
    margin-bottom: 16px;
}
.contact-form .form-row input { margin-bottom: 0; }
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: #aab2bf; }
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus { outline: none; border-color: #0d7c3e; box-shadow: 0 0 0 3px rgba(13,124,62,0.12); }
.contact-form select {
    appearance: none; -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b95a8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    cursor: pointer;
    color: #8b95a8;
}
.contact-form select option { color: #1f2937; }
.contact-form textarea { resize: vertical; min-height: 130px; }
.contact-form .btn { width: 100%; margin-bottom: 0; padding: 14px; font-size: 16px; }

@media (max-width: 900px) {
    .contact-grid { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 560px) {
    .contact-form-wrapper { padding: 28px 20px; }
    .contact-form .form-row { grid-template-columns: 1fr; gap: 0; }
    .contact-form .form-row input { margin-bottom: 16px; }
    .contact-item > i { width: 46px; height: 46px; font-size: 18px; }
    .contact-item p { font-size: 15px; }
    .contact-item p.contact-phone { font-size: 22px; }
}