/* style.css - 诺津科技官网样式 v2 */
/* 参考Veolia风格：简洁专业、B2B工业风 */

/* ===== CSS变量 ===== */
:root {
    --primary: #0F4C81;
    --secondary: #1E88E5;
    --accent: #00897B;
    --dark: #1A1A2E;
    --text: #333333;
    --text-light: #666666;
    --bg-light: #F8F9FA;
    --white: #FFFFFF;
    --border: #E0E0E0;
    
    --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    
    --radius: 6px;
    --radius-lg: 10px;
    
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Noto Sans SC', 'Source Han Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: #333333;
    background: var(--white);
}

p {
    margin-bottom: 20px;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}


/* ===== 顶栏 ===== */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 35px;
    background: #f5f5f5;
    border-bottom: 1px solid #e0e0e0;
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 20px;
}

.top-bar-content {
    display: flex;
    align-items: center;
    gap: 16px;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
}

.lang-btn {
    color: #666;
    transition: color 0.2s;
    padding: 2px 6px;
}

.lang-btn:hover,
.lang-btn.active {
    color: var(--primary);
    font-weight: 500;
}

.lang-divider {
    color: #ccc;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 35px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    z-index: 1000;
    height: 84px;
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 84px;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: 5%;
}

.logo-img {
    height: 48px;
    width: auto;
}

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

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.logo-tagline {
    font-size: 10px;
    color: var(--text-light);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
    margin-left: 40px;
    margin-right: 20px;
}

.nav-menu {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 640px;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    padding: 8px 0;
    padding-right: 16px;
    position: relative;
    transition: color 0.2s;
    display: flex;
    align-items: center;
}

.nav-menu a::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 10px;
    color: var(--text-light);
    margin-left: 4px;
    transition: transform 0.2s;
}

.nav-menu li:hover a::after {
    transform: rotate(180deg);
}

.nav-menu a:hover { 
    color: var(--secondary); 
}

/* ===== 下拉菜单 ===== */
.nav-menu .dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s;
    z-index: 1002;
    padding: 8px 0;
}

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

.nav-menu .dropdown a {
    padding: 10px 16px;
    font-size: 14px;
    color: var(--text);
    white-space: nowrap;
}

.nav-menu .dropdown a::after {
    display: none;
}

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

/* ===== 导航栏右侧快捷工具 ===== */
.nav-tools {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
    padding-right: 5%;
}

.nav-tool {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--text-light);
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    background: rgba(15,76,129,0.06);
    border-radius: 50%;
    text-decoration: none;
}

.nav-tool:hover {
    background: var(--primary);
    color: var(--white);
}

.nav-tool-top {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.nav-tool-top.visible {
    opacity: 1;
    visibility: visible;
}

/* 工具弹出信息 */
.nav-tool-popup {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    min-width: 200px;
    max-width: 320px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 20px 24px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-5px);
    transition: all 0.3s;
    z-index: 1003;
    text-align: center;
    border: 1px solid var(--border);
}

.nav-tool-popup::before {
    content: '';
    position: absolute;
    top: -6px;
    right: 12px;
    width: 12px;
    height: 12px;
    background: var(--white);
    border-left: 1px solid var(--border);
    border-top: 1px solid var(--border);
    transform: rotate(45deg);
}

.nav-tool:hover .nav-tool-popup,
.nav-tool.popup-open .nav-tool-popup {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-tool-popup p {
    font-size: 14px;
    color: var(--text);
    margin: 0 0 12px;
    font-weight: 500;
}

.nav-tool-popup a {
    display: inline-block;
    font-size: 13px;
    color: var(--secondary);
    padding: 6px 20px;
    border: 1px solid var(--secondary);
    border-radius: 20px;
    transition: all 0.2s;
}

.nav-tool-popup a:hover {
    background: var(--secondary);
    color: var(--white);
}

/* 邮箱弹窗 */
.email-item {
    margin-bottom: 8px;
}

.email-item:last-child {
    margin-bottom: 0;
}

.email-item p {
    font-size: 13px;
    color: var(--text-light);
    margin: 0 0 4px;
    font-weight: 400;
}

.email-item strong {
    display: block;
    font-size: 14px;
    color: var(--text);
    margin: 0 0 10px;
    font-weight: 600;
}

.email-item a {
    display: inline-block;
    font-size: 13px;
    color: var(--secondary);
    padding: 6px 20px;
    border: 1px solid var(--secondary);
    border-radius: 20px;
    transition: all 0.2s;
    text-decoration: none;
}

.email-item a:hover {
    background: var(--secondary);
    color: var(--white);
}

.email-divider {
    height: 1px;
    background: var(--border);
    margin: 12px 0;
}

/* 二维码弹窗 */
.nav-tool-qrcode .nav-tool-popup {
    min-width: 200px;
    padding: 12px 20px;
}

.nav-tool-qrcode .nav-tool-popup img {
    width: 168px;
    height: 168px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.nav-tool-qrcode .nav-tool-popup::after {
    content: '扫码关注公众号';
    display: block;
    font-size: 14px;
    color: var(--text-light);
    margin-top: -6px;
}

.nav-tool-qrcode .qrcode-fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
}

.nav-tool-qrcode .qrcode-fallback i {
    font-size: 48px;
    color: #07C160;
}

.nav-tool-qrcode .qrcode-fallback p {
    font-size: 12px;
    margin: 0;
}

/* 电话弹窗 */
.nav-tool:first-child .nav-tool-popup strong {
    display: block;
    font-size: 16px;
    color: var(--text);
    margin: 0 0 12px;
    font-weight: 600;
}

.nav-tool:first-child .nav-tool-popup .work-hours {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

/* 地址弹窗 */
.nav-tool-address .nav-tool-popup {
    min-width: 280px;
    max-width: 320px;
    text-align: left;
    padding: 20px 24px;
    right: 0;
}

.address-item {
    margin-bottom: 12px;
}

.address-item:last-child {
    margin-bottom: 0;
}

.address-item strong {
    display: block;
    font-size: 14px;
    color: var(--primary);
    margin-bottom: 4px;
}

.address-item p {
    font-size: 13px;
    color: var(--text);
    margin: 0 0 8px;
    font-weight: 400;
    line-height: 1.5;
}

.address-item a {
    display: inline-block;
    font-size: 12px;
    color: var(--secondary);
    padding: 4px 14px;
    border: 1px solid var(--secondary);
    border-radius: 16px;
    transition: all 0.2s;
    text-decoration: none;
}

.address-item a:hover {
    background: var(--secondary);
    color: var(--white);
}

.address-divider {
    height: 1px;
    background: var(--border);
    margin: 12px 0;
}

/* 地图缩略图 */
.map-link {
    display: block !important;
    padding: 0 !important;
    border: none !important;
    border-radius: var(--radius) !important;
    overflow: hidden;
    margin-top: 8px;
}

.map-link:hover {
    background: transparent !important;
}

.map-thumb {
    width: 100%;
    height: 100px;
    object-fit: cover;
    border-radius: var(--radius);
    display: block;
    transition: transform 0.3s;
}

.map-link:hover .map-thumb {
    transform: scale(1.02);
}

/* ===== Hero轮播区域 ===== */
.hero-carousel {
    position: relative;
    height: 500px;
    min-height: 500px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    color: var(--white);
    background: #0a3d62;
    margin-top: 16px;
    border-radius: 12px;
}

/* ===== 统计数据条 ===== */
.stats-bar {
    background: linear-gradient(135deg, #0c2e4e 0%, #1565a8 40%, #1a8a7a 100%);
    padding: 16px 0;
    color: var(--white);
    margin-top: 20px;
    border-radius: 12px;
}

.stats-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
}

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

.stat-item::after {
    content: '';
    position: absolute;
    right: -30px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 30px;
    background: rgba(255,255,255,0.2);
}

.stat-item:last-child::after {
    display: none;
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--white);
    line-height: 1;
}

.stat-suffix {
    font-size: 22px;
    color: var(--white);  /* 白色加号 */
}

.stat-label {
    font-size: 11px;
    color: rgba(255,255,255,0.7);
    margin-top: 6px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

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

.section p {
    margin-bottom: 20px;
    line-height: 1.75;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 28px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.75;
}

/* ===== 专长区块（压缩版，左60%专长 + 右40%新闻） ===== */
.expertise-section {
    background: var(--bg-light);
    padding: 40px 0;
    position: relative;
    border-radius: 16px;
}

/* 左右分栏容器 */
.expertise-wrapper {
    display: flex;
    gap: 40px;
}

/* 左侧：专长内容占60% */
.expertise-left {
    flex: 0 0 60%;
}

.expertise-left .section-header {
    margin-bottom: 24px;
}

.expertise-left .section-title {
    font-size: 28px;
    margin-bottom: 10px;
}

.expertise-left .section-subtitle {
    font-size: 14px;
    line-height: 1.6;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.expertise-more {
    text-align: right;
    margin-top: 8px;
}

.expertise-more a {
    font-size: 13px;
    color: var(--secondary);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color 0.2s, gap 0.2s;
}

.expertise-more a:hover {
    color: var(--primary);
    gap: 6px;
}

/* 右侧：新闻动态占40% */
.expertise-right {
    flex: 0 0 40%;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
}

.news-header {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--secondary);
}

.news-list {
    list-style: none;
    max-height: 400px;
    overflow-y: auto;
    padding-right: 4px;
}

/* 自定义滚动条样式 */
.news-list::-webkit-scrollbar {
    width: 6px;
}
.news-list::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}
.news-list::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}
.news-list::-webkit-scrollbar-thumb:hover {
    background: #a1a1a1;
}

.news-item {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

.news-item:last-child {
    border-bottom: none;
}

.news-accent {
    flex-shrink: 0;
    width: 3px;
    background: var(--primary);
    border-radius: 2px;
    align-self: stretch;
    margin: 8px 0 5px 0;
}

.news-date-inline {
    font-size: 11px;
    color: #999;
    display: block;
    margin-bottom: 2px;
}

.news-content {
    padding-left: 2px;
}

.news-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.news-content p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.4;
    margin-bottom: 0;
}

.expertise-card {
    background: var(--white);
    padding: 24px 16px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.expertise-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--secondary);
}

.expertise-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
}

.expertise-icon i {
    font-size: 18px;
    color: var(--white);
}

.expertise-card h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 10px;
    text-align: center;
}

.expertise-card p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 0;
}

/* ===== 行业应用 ===== */
.industries-section {
    background: var(--white);
    padding: 32px 0;
}

.industries-section .section-header {
    margin-bottom: 16px;
}

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

.industry-card {
    position: relative;
    background: var(--bg-light);
    padding: 0;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
    overflow: hidden;
    height: 180px;
}

.industry-card:hover {
    border-color: var(--secondary);
    box-shadow: var(--shadow-md);
}

.industry-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--bg-light);
}

.industry-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s;
}

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

.industry-card h4 {
    position: absolute;
    bottom: 0;
    left: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    padding: 32px 12px 12px;
    margin: 0;
    z-index: 2;
    text-align: left;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.6);
}

.industry-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s;
}

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

/* 更多行业应用链接 */
.industries-more {
    text-align: right;
    margin-top: 24px;
}

.industries-more-link {
    font-size: 13px;
    color: var(--secondary);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color 0.2s, gap 0.2s;
}

.industries-more-link:hover {
    color: var(--primary);
    gap: 6px;
}

.industries-more-link i {
    font-size: 12px;
}

/* ===== 核心数据V2（优化版） ===== */
.hero-stats-v2 {
    position: relative;
    z-index: 5;
    background: linear-gradient(180deg, rgba(15,76,129,0.95) 0%, rgba(15,76,129,1) 100%);
    padding: 48px 0;
}

.stats-showcase {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
}

.stats-counter {
    text-align: center;
    position: relative;
}

.counter-number {
    font-size: 42px;
    font-weight: 700;
    color: var(--white);
    line-height: 1;
    display: inline-block;
}

.counter-suffix {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent);
    margin-left: 2px;
}

.counter-detail {
    font-size: 12px;
    color: rgba(255,255,255,0.7);
    margin-top: 6px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 500;
}

.stats-divider {
    width: 1px;
    height: 44px;
    background: rgba(255,255,255,0.2);
}

.stats-tagline {
    text-align: center;
    margin-top: 24px;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* ===== 关于诺津 ===== */
.about-section {
    background: linear-gradient(135deg, #0F3460 0%, #1A5C5B 100%);
    color: var(--white);
}

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

.about-content h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 24px;
}

.about-content p {
    font-size: 16px;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 16px;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius);
}

.about-feature i {
    font-size: 24px;
    color: var(--accent);
}

.about-feature span {
    font-size: 15px;
    font-weight: 500;
}

/* ===== 关于诺津 + 联系咨询（合并区块） ===== */
.about-contact-section {
    background: linear-gradient(135deg, #0F3460 0%, #1A5C5B 100%);
    color: var(--white);
    padding: 50px 0;
    border-radius: 12px;
}

.about-contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

/* 左侧：关于诺津 */
.about-contact-left h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 10px;
}

.about-intro-text {
    margin-bottom: 24px;
}

.about-intro-text p {
    font-size: 14px;
    line-height: 2.2;
    opacity: 0.9;
    margin-bottom: 8px;
    padding-left: 16px;
    position: relative;
}

.about-intro-text p::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.about-contact-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 0;
}

.about-contact-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius);
}

.about-contact-feature i {
    font-size: 16px;
    color: var(--accent);
}

.about-contact-feature span {
    font-size: 13px;
    font-weight: 500;
}

.about-contact-info {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.about-contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    opacity: 0.85;
}

.about-contact-item i {
    font-size: 14px;
    color: var(--accent);
}

/* 右侧：发送咨询 */
.about-contact-right {
    background: var(--white);
    padding: 20px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    color: var(--text);
    align-self: end;
}

.about-contact-right h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 12px;
}

.form-group {
    margin-bottom: 10px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 4px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: var(--font);
    transition: border-color 0.2s;
}

.form-group textarea {
    min-height: 90px;
}

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

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

.form-btn {
    width: 100%;
    padding: 10px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.form-btn:hover {
    background: var(--secondary);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--dark);
    color: rgba(255,255,255,0.8);
    padding: 32px 0 10px;
    margin-top: 20px;
    border-radius: 12px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-bottom: 20px;
    justify-items: center;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 4px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.footer-col a {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    transition: color 0.2s;
}

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


.footer-bottom {
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 13px;
    opacity: 0.6;
    text-align: center;
    flex-wrap: wrap;
    gap: 4px;
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .container {
        padding: 0 24px;
    }
    
    .nav-menu {
        gap: 20px;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    /* 移动端导航栏取消fixed，避免遮挡内容 */
    .top-bar {
        position: relative;
    }
    .navbar {
        position: relative;
        top: 0;
    }
    
    .navbar-content {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 20px;
    }
    
    .main-nav {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        margin-top: 12px;
    }
    
    .nav-menu {
        gap: 16px;
        flex-wrap: wrap;
    }
    
    .slide-content {
        padding: 80px 16px 16px;
        margin-left: 14%;
        margin-right: 50px;
        text-align: left;
    }
    
    .slide-title {
        font-size: 20px;
        white-space: normal;
    }
    
    .slide-desc {
        font-size: 13px;
    }
    
    .slide-tags {
        margin-bottom: 14px;
    }
    
    .slide-tags span {
        font-size: 11px;
        padding: 4px 10px;
    }
    
    .slide-buttons {
        flex-wrap: wrap;
    }
    
    .hero-btn {
        padding: 8px 18px;
        font-size: 13px;
    }
    
    .carousel-arrow {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }
    
    .carousel-arrow-left { left: 12px; }
    .carousel-arrow-right { right: 12px; }
    
    .carousel-dots {
        bottom: 16px;
    }
    
    .stats-grid {
        gap: 30px;
    }
    
    .stat-item::after {
        display: none;
    }
    
    .industries-grid {
        grid-template-columns: 1fr;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    /* 专长+新闻上下堆叠 */
    .expertise-wrapper {
        flex-direction: column;
    }
    .expertise-left,
    .expertise-right {
        flex: 0 0 100%;
    }
    .expertise-right {
        margin-top: 20px;
    }
    .news-list {
        max-height: none;
    }
    
    /* 关于+联系上下堆叠 */
    .about-contact-grid {
        grid-template-columns: 1fr;
    }
    .about-contact-right {
        margin-top: 20px;
    }
    
    /* 容器边距进一步减小 */
    .container {
        padding: 0 16px;
    }
    
    /* 轮播区域适配 - 为fixed导航栏留足空间 */
    .hero-carousel {
        height: 420px;
        min-height: 420px;
        border-radius: 8px;
        margin-top: 16px;
        padding-top: 0;
    }
    .carousel-slide.active {
        align-items: flex-start;
    }
    .slide-content {
        padding: 140px 16px 20px;
        margin-left: 0;
    }
    .slide-title {
        white-space: normal;
        font-size: 18px;
    }
    .slide-desc {
        font-size: 13px;
    }
    
    /* 统计条改为3列 */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    .stat-number {
        font-size: 24px;
    }
    .stat-suffix {
        font-size: 18px;
    }
    .stat-label {
        font-size: 10px;
    }
    
    /* 导航栏自适应 */
    .navbar {
        height: auto;
    }
    .navbar-content {
        height: auto;
        padding: 8px 12px;
    }
    .logo {
        margin-left: 0;
    }
    .main-nav {
        order: 3;
        width: 100%;
        margin-left: 0;
        margin-right: 0;
        margin-top: 6px;
        justify-content: center;
    }
    .nav-menu {
        justify-content: center;
        gap: 12px;
    }
    .nav-menu a {
        font-size: 13px;
        padding-right: 10px;
    }
    .nav-menu a::after {
        font-size: 9px;
        margin-left: 2px;
    }
    .nav-tools {
        padding-right: 0;
    }
    .nav-tool {
        width: 32px;
        height: 32px;
        font-size: 13px;
    }
    
    /* 关于区域 */
    .about-intro-text p {
        line-height: 1.8;
        font-size: 13px;
    }
    .about-contact-left h2 {
        font-size: 20px;
    }
    .about-contact-feature {
        padding: 10px 12px;
    }
    
    /* 页脚 */
    .footer-grid {
        gap: 16px;
    }
    .footer-col h4 {
        font-size: 13px;
    }
    .footer-col a {
        font-size: 12px;
    }
    
    /* 表单 */
    .form-group input,
    .form-group textarea {
        padding: 10px 12px;
        font-size: 13px;
    }
    .form-btn {
        padding: 10px;
    }
    
    /* 行业应用卡片 */
    .industry-card {
        height: 160px;
    }
    .industry-card h4 {
        font-size: 14px;
        padding: 24px 10px 10px;
    }
    
    /* 专长卡片 */
    .expertise-card {
        padding: 16px 12px;
    }
    .expertise-card h3 {
        font-size: 14px;
    }
    .expertise-card p {
        font-size: 12px;
    }
    .expertise-icon {
        width: 40px;
        height: 40px;
    }
    .expertise-icon i {
        font-size: 16px;
    }
}

/* ===== 更小屏幕（480px以下） ===== */
@media (max-width: 480px) {
    .nav-menu a {
        font-size: 12px;
        padding-right: 8px;
    }
    .nav-menu a::after {
        display: none;
    }
    
    .slide-title {
        font-size: 16px;
    }
    .slide-desc {
        font-size: 12px;
    }
    .slide-tags span {
        font-size: 11px;
        padding: 4px 10px;
    }
    .hero-btn {
        padding: 7px 14px;
        font-size: 12px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section-title {
        font-size: 20px;
    }
    .section-subtitle {
        font-size: 13px;
    }
    .section {
        padding: 40px 0;
    }
    
    .about-contact-left h2 {
        font-size: 18px;
    }
    .about-contact-right h3 {
        font-size: 16px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .footer-bottom {
        font-size: 11px;
    }
}

/* ===== 轮播样式 ===== */

.carousel-track {
    position: relative;
    flex: 1;
    display: flex;
    align-items: center;
}

.carousel-slide {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: none;
    align-items: center;
    opacity: 0;
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.carousel-slide.active {
    display: flex;
    opacity: 1;
    pointer-events: auto;
    position: absolute;
    justify-content: flex-start;
}

.slide-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.slide-bg::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(10,61,98,0.7) 0%, rgba(30,95,138,0.5) 100%);
    z-index: 1;
}

.slide-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 100px 24px 20px;
    margin-left: 8%;
    text-align: left;
}

.slide-eyebrow {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.6);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.slide-eyebrow::before {
    content: '';
    width: 28px;
    height: 2px;
    background: var(--accent);
    display: inline-block;
}

.slide-title {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 12px;
    letter-spacing: 0;
    color: var(--white);
    white-space: nowrap;
}

.slide-desc {
    font-size: 14px;
    line-height: 1.6;
    opacity: 0.85;
    margin-bottom: 16px;
    color: rgba(255,255,255,0.9);
}

.slide-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.slide-tags span {
    font-size: 12px;
    font-weight: 500;
    padding: 5px 14px;
    border: 1px solid rgba(30,136,229,0.4);
    border-radius: 20px;
    background: rgba(30,136,229,0.12);
    backdrop-filter: blur(8px);
    color: rgba(255,255,255,0.9);
    transition: all 0.2s;
}

.slide-tags span:hover {
    background: rgba(30,136,229,0.22);
    border-color: rgba(30,136,229,0.7);
}

.slide-buttons {
    display: flex;
    gap: 12px;
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s;
    text-decoration: none;
}

.hero-btn-primary {
    background: var(--accent);
    color: var(--white);
    border: 2px solid var(--accent);
}

.hero-btn-primary:hover {
    background: #007a6a;
    border-color: #007a6a;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,137,123,0.4);
}

.hero-btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.4);
}

.hero-btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--white);
}

/* 轮播箭头 */
.carousel-arrow {
    position: absolute;
    top: calc(50% + 59.5px);
    transform: translateY(-50%);
    z-index: 10;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50%;
    color: var(--white);
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.carousel-arrow:hover {
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.4);
}

.carousel-arrow-left { left: 24px; }
.carousel-arrow-right { right: 24px; }

/* 圆点指示器 */
.carousel-dots {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 10px;
    align-items: center;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    padding: 0;
}

.dot.active {
    width: 24px;
    border-radius: 10px;
    background: var(--white);
}

.dot:hover:not(.active) {
    background: rgba(255,255,255,0.6);
}