/* ===== 润喆 · 耀雄高科 新工业蓝配色 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #334155;
    background-color: #ffffff;
    scroll-behavior: smooth;
}

/* 颜色变量 */
:root {
    --primary: #1e4a7a;           /* 科技蓝/工业蓝 */
    --primary-dark: #0f3b6a;
    --primary-light: #2b5f8f;
    --secondary: #10b981;          /* 环保绿 */
    --accent: #f97316;              /* 橙色/强调色 */
    --accent-light: #fb923c;
    --gray-bg: #f8fafc;            /* 浅灰背景 */
    --text-dark: #1e293b;           /* 深灰文字 */
    --text-light: #64748b;
    --border-light: #e2e8f0;
    --shadow-sm: 0 8px 20px rgba(0, 30, 60, 0.06);
    --shadow-hover: 0 15px 30px rgba(0, 40, 80, 0.12);
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 30px;
}

/* 标题字体自适应 */
h1 { font-size: 3.1rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.6rem; }
h5 { font-size: 1.3rem; }
@media (max-width: 700px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.7rem; }
    h4 { font-size: 1.4rem; }
    h5 { font-size: 1.2rem; }
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.25s ease;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    background: transparent;
}

.btn-primary {
    background-color: var(--accent);
    color: white;
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}
.btn-primary:hover {
    background-color: #ea580c;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(249, 115, 22, 0.4);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
}
.btn-outline:hover {
    background-color: var(--accent);
    color: white;
    transform: translateY(-3px);
}

/* 底部固定联系条 */
.top-contact-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--accent);
    color: white;
    padding: 16px 0;
    font-weight: 600;
    border-top: 2px solid var(--primary-light);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
}
.top-contact-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}
.top-contact-bar span i {
    margin-right: 8px;
}
.top-contact-bar a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
    padding: 5px 15px;
    background-color: rgba(255,255,255,0.15);
    border-radius: 50px;
    transition: background-color 0.3s;
}
.top-contact-bar a:hover {
    background-color: rgba(255,255,255,0.25);
}
/* 微信图标在联系条内 */
.top-contact-bar .wechat-icon-top {
    position: relative;
    cursor: pointer;
    background: rgba(255,255,255,0.15);
    color: white;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    transition: 0.2s;
    margin-left: 15px;
}
.top-contact-bar .wechat-icon-top:hover {
    background: rgba(255,255,255,0.25);
    transform: scale(1.05);
}
.top-contact-bar .wechat-icon-top .wechat-qr {
    position: absolute;
    bottom: 50px;
    right: 0;
    width: 150px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 10px;
    display: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 1001;
}
.top-contact-bar .wechat-icon-top:hover .wechat-qr {
    display: block;
}
.top-contact-bar .wechat-icon-top .wechat-qr img {
    width: 100%;
}
/* 小屏幕隐藏联系条 */
@media (max-width: 600px) {
    .top-contact-bar {
        display: none;
    }
}
/* 为 body 添加底部内边距，防止内容被固定条遮挡（大屏幕生效） */
@media (min-width: 601px) {
    body {
        padding-bottom: 70px;
    }
}

/* 头部导航 */
header {
    background: rgba(255,255,255,0.98);
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 99;
}
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    flex-wrap: wrap;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
}
.logo i {
    font-size: 2.2rem;
    color: var(--primary);
}
.logo-text h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1.2;
}
.logo-text span {
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--text-light);
    letter-spacing: 1px;
}
.nav-links {
    display: flex;
    gap: 36px;
    list-style: none;
    align-items: center;
    flex-wrap: wrap;
    margin-left: auto;
}
.nav-links a {
    text-decoration: none;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 1.05rem;
    transition: color 0.2s;
    position: relative;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--primary);
    border-radius: 6px;
    transition: 0.25s;
}
.nav-links a:hover::after,
.nav-links a.active::after {
    width: 70%;
}
.mobile-menu-btn {
    display: none;
    font-size: 28px;
    cursor: pointer;
}
@media (max-width: 700px) {
    .nav-links {
        display: none;
    }
    .mobile-menu-btn {
        display: block;
    }
}

/* 首屏Banner轮播 */
.banner-swiper {
    width: 100%;
    height: 600px;
}
.banner-swiper .swiper-slide {
    position: relative;
    background: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}
.banner-swiper .slide-1 {
    background: linear-gradient(135deg, #0f3b6a 0%, #1e4a7a 100%);
}
.banner-swiper .slide-2 {
    background: linear-gradient(135deg, #1e4a7a 0%, #2b5f8f 100%);
}
.banner-content {
    padding: 0 40px;
    width: 100%;
}
.banner-content h2 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}
.banner-content p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.9;
}
.banner-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}
.banner-buttons .btn-primary {
    background: var(--accent);
    color: white;
}
.banner-buttons .btn-outline {
    border-color: white;
    color: white;
}
.banner-buttons .btn-outline:hover {
    background: white;
    color: var(--primary-dark);
}
.swiper-pagination-bullet {
    background: white;
    opacity: 0.6;
}
.swiper-pagination-bullet-active {
    opacity: 1;
    background: var(--accent);
}
@media (max-width: 700px) {
    .banner-swiper { height: 400px; }
    .banner-content h2 { font-size: 2.5rem; }
    .banner-content p { font-size: 1rem; }
    .banner-content { padding: 0 20px; }
}

/* 标题通用 */
.section-title {
    text-align: center;
    margin: 50px 0;
}
.section-title h2,
.section-title h3 {
    color: var(--primary-dark);
    font-weight: 700;
}
.section-title p {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 10px auto 0;
}

/* 核心优势卡片 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}
.advantage-card {
    background: white;
    border-radius: 30px;
    padding: 40px 25px;
    box-shadow: var(--shadow-sm);
    transition: 0.3s;
    text-align: center;
    border: 1px solid var(--border-light);
}
.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
}
.advantage-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 25px;
    background: var(--gray-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.8rem;
    color: var(--primary);
    transition: 0.2s;
}
.advantage-card:hover .advantage-icon {
    background: var(--primary);
    color: white;
}
.advantage-card h3 {
    font-size: 1.6rem;
    color: var(--primary-dark);
    margin-bottom: 15px;
}
.advantage-card p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.7;
}
@media (max-width: 1000px) {
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
    .advantages-grid { grid-template-columns: 1fr; }
}

/* 数据统计 */
.stats-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    background: var(--primary-dark);
    color: white;
    border-radius: 80px;
    padding: 40px 30px;
    margin: 60px 0;
    gap: 20px;
}
/* 小屏幕隐藏数据统计 */
@media (max-width: 600px) {
    .stats-row {
        display: none;
    }
}
.stat-item {
    text-align: center;
    min-width: 140px;
}
.stat-number {
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1;
}
.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* 网格布局 (一行3列) */
.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin: 40px 0;
}

@media (min-width: 600px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 1000px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 产品卡片 */
.product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: 0.3s;
    border: 1px solid var(--border-light);
}
.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}
.product-img {
    width: 100%;
    aspect-ratio: 3/3;
    object-fit: cover;
    display: block;
}
.product-info {
    padding: 20px;
}
.product-info h3 {
    font-size: 1.4rem;
    color: var(--primary-dark);
    margin-bottom: 8px;
}
.product-desc {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 5px;
}
.product-usage {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 15px;
}
.product-link {
    text-align: right;
}
.product-link a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.product-link a:hover {
    gap: 8px;
}

/* 解决方案卡片 */
.solution-card {
    background: white;
    border-radius: 20px;
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}
.solution-card img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    border-radius: 16px;
}
.solution-card h3 {
    font-size: 1.4rem;
    margin: 15px 0 10px;
    color: var(--primary-dark);
}
.solution-card p {
    color: var(--text-light);
    margin-bottom: 15px;
}
.solution-card .btn {
    margin-top: 5px;
}

/* 技术方案卡片 */
.tech-solution-card {
    background: white;
    border-radius: 20px;
    padding: 30px 20px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    border: 1px solid var(--border-light);
    transition: 0.3s;
}
.tech-solution-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
}
.tech-solution-icon {
    width: 80px;
    height: 80px;
    background: var(--gray-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2.5rem;
    color: var(--primary);
}
.tech-solution-card h3 {
    font-size: 1.4rem;
    color: var(--primary-dark);
    margin-bottom: 10px;
}
.tech-solution-card p {
    color: var(--text-light);
    margin-bottom: 15px;
}
.tech-solution-card .btn {
    margin-top: 10px;
}

/* 案例卡片 */
.case-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.case-card img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}
.case-content {
    padding: 20px;
}
.case-content h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--primary-dark);
}
.case-content p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 技术问答 */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
}
.faq-item {
    background: white;
    border-radius: 16px;
    border: 1px solid var(--border-light);
    transition: 0.3s;
}
.faq-item summary {
    padding: 18px 20px;
    font-weight: 600;
    color: var(--primary-dark);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gray-bg);
    border-radius: 16px;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--primary);
    transition: transform 0.3s;
}
.faq-item[open] summary::after {
    transform: rotate(180deg);
}
.faq-item p {
    padding: 20px;
    margin: 0;
    color: var(--text-light);
}
@media (max-width: 700px) {
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

/* 公司实力 */
.strength-module {
    background: linear-gradient(145deg, var(--gray-bg), white);
    border-radius: 40px;
    padding: 50px;
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: center;
    border: 1px solid var(--border-light);
}
.strength-text {
    flex: 2;
}
.strength-text h3 {
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 20px;
}
.strength-text p {
    color: var(--text-light);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 25px;
}
.strength-badge {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.badge-item {
    background: white;
    border-radius: 40px;
    padding: 8px 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    font-weight: 600;
    color: var(--secondary);
}
.strength-cert {
    flex: 1;
    display: flex;
    gap: 15px;
    justify-content: center;
}
.strength-cert img {
    width: 100px;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}
.service-area {
    margin-top: 40px;
    background: white;
    border-radius: 30px;
    padding: 30px;
    border: 1px solid var(--border-light);
}
@media (max-width: 700px) {
    .strength-module {
        flex-direction: column;
    }
}

/* 一站式服务卡片 */
.service-modern {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin: 40px 0;
}
.service-modern-item {
    background: var(--gray-bg);
    border-radius: 20px;
    padding: 30px 20px;
    text-align: center;
    transition: 0.3s;
    border: 1px solid transparent;
}
.service-modern-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}
.service-icon {
    width: 70px;
    height: 70px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}
.service-modern-item h4 {
    font-size: 1.3rem;
    color: var(--primary-dark);
    margin-bottom: 10px;
}
.service-modern-item p {
    color: var(--text-light);
}
@media (max-width: 1000px) {
    .service-modern {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 700px) {
    .service-modern {
        grid-template-columns: 1fr;
    }
}
.cta-banner {
    padding: 0;
    position: relative;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 80%;
    height: 200%;
    transform: rotate(15deg);
    pointer-events: none;
}
.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px;
}
.cta-wrapper {	
    background: linear-gradient(145deg, var(--gray-bg), white);
    border-radius: 40px;
    padding: 50px;
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: center;
    border: 1px solid var(--border-light);
}
.cta-text {
    flex: 1.2;
    color: var(--primary-dark);
}
.cta-text h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}
.cta-text h4 {
    font-size: 1.2rem;
    font-weight: 500;
    opacity: 0.95;
    margin: 0.5rem 0;
}
.cta-text a {
    color: #f97316;
    text-decoration: none;
    border-bottom: 2px solid rgba(249,115,22,0.5);
    transition: all 0.2s;
}
.cta-text a:hover {
    color: #fb923c;
    border-bottom-color: #fb923c;
}
.cta-form {
    flex: 1.5;
    background: white;
    border-radius: 32px;
    padding: 32px 28px;
    box-shadow: 0 25px 40px -12px rgba(0, 0, 0, 0.25);
    transition: transform 0.2s ease;
}
.cta-form:hover {
    transform: translateY(-5px);
}
.cta-form h4 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #0f3b6a;
    margin-bottom: 1.5rem;
    text-align: center;
}
.cta-form input,
.cta-form select {
    width: 100%;
    padding: 14px 18px;
    margin-bottom: 16px;
    border: 1px solid #e2e8f0;
    border-radius: 60px;
    font-size: 0.95rem;
    background: #ffffff;
    transition: all 0.2s;
    outline: none;
}
.cta-form input:focus,
.cta-form select:focus {
    border-color: #f97316;
    box-shadow: 0 0 0 3px rgba(249,115,22,0.1);
}
.cta-form button {
    width: 100%;
    background: #f97316;
    color: white;
    border: none;
    padding: 14px 20px;
    border-radius: 60px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 8px rgba(249,115,22,0.2);
}
.cta-form button:hover {
    background: #ea580c;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(249,115,22,0.3);
}
.cta-form p {
    text-align: center;
    color: #64748b;
}
/* 响应式 */
@media (max-width: 800px) {
    .cta-wrapper {
        flex-direction: column;
    }
    .cta-text {
        text-align: center;
    }
    .cta-text h3 {
        font-size: 1.6rem;
    }
    .cta-form {
        width: 100%;
        padding: 28px 20px;
    }
}

/* 悬浮客服组 */
.float-group {
    position: fixed;
    bottom: 100px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 1000;
}
@media (max-width: 600px) {
    .float-group {
        bottom: 30px;
    }
}
.float-item {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    transition: 0.2s;
    cursor: pointer;
    position: relative;
    background: var(--primary);
    color: white;
}
.float-item a {
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    text-decoration: none;
}
.float-item.phone {
    background: var(--accent);
}
.float-item.wechat {
    background: var(--primary);
}
.float-item.top {
    background: var(--primary-dark);
}
.float-item .wechat-qr-float {
    position: absolute;
    right: 70px;
    bottom: 0;
    width: 150px;
    background: white;
    border-radius: 8px;
    padding: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    display: none;
}
.float-item:hover .wechat-qr-float {
    display: block;
}
.float-item .wechat-qr-float img {
    width: 100%;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary);
    color: white;
    font-size: 1.5rem;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.2);
}
@media (max-width: 600px) {
    .back-to-top {
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
        bottom: 30px;
        right: 20px;
    }
}

/* 返回顶部按钮显示状态（与float-group配合） */
.float-item.top.show {
    display: flex; /* 或保持可见，默认已显示 */
}

/* 面包屑导航中的页面内快捷菜单 */
.page-nav {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-left: auto;
}
.page-nav a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}
.page-nav a:hover {
    color: var(--primary);
}
@media (max-width: 800px) {
    .page-nav {
        display: none; /* 小屏隐藏 */
    }
}

/* 确保产品卡片内的图标区域一致 */
.product-card .product-icon {
    background: var(--gray-bg);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 30px auto 15px;
    font-size: 3rem;
    color: var(--primary);
    transition: 0.2s;
}
.product-card:hover .product-icon {
    background: var(--primary);
    color: white;
}
		
/* ===== 页脚美化增强样式 ===== */
footer {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #0a2a4a 100%);
    position: relative;
    overflow: hidden;
    padding: 60px 0 30px;
    margin-top: 80px;
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.08);
}

/* 装饰性波浪/光晕效果 */
footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--primary-light), var(--accent));
    opacity: 0.6;
}

footer::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, rgba(255,255,255,0) 70%);
    pointer-events: none;
}

.footer-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col {
    flex: 1 1 200px;
    transition: transform 0.2s ease;
}


.footer-col:hover {
    transform: translateY(-3px);
}

 .footer-col h6 {
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
} 

.footer-col h6::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
}
 
.footer-col ul {
    list-style: none;
    padding: 0;
}

.footer-col ul li {
    margin-bottom: 0.7rem;
}

.footer-col ul li a,
.footer-col ul li {
    color: #cbd5e1;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.9rem; 
    display: block;
    align-items: center;
    gap: 8px;
} 

.footer-col ul li a i,
.footer-col ul li i {
    width: 20px;
    font-size: 0.9rem;
    transition: transform 0.2s;
}

.footer-col ul li a:hover {
    color: var(--accent);
    transform: translateX(4px);
}

.footer-col ul li a:hover i {
    transform: translateX(2px);
    color: var(--accent);
} 

/* 第一个col的描述文字 */
.footer-col:first-child p {
    color: #b0c4de;
    line-height: 1.6;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* 版权区域 */
.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
    color: #9bb5cc;
    position: relative;
    z-index: 2;
}
/* 底部版权栏 */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 0.85rem;
    color: #9bb5cc;
}
.footer-bottom a {
    color: #9bb5cc;
    text-decoration: none;
    transition: color 0.2s;
}
.footer-bottom a:hover {
    color: var(--accent);
}

/* 响应式调整 */
@media (max-width: 768px) {
    footer {
        padding: 40px 0 20px;
    }
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 30px;
    }
    .footer-col h6 {
        margin-bottom: 1rem;
    }
    .copyright {
        padding-top: 20px;
    }
}